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33.9

^[2]

207.7

^[2]

12.7

6.4

^[3]

21.2

^[3]

5.5

0.0

310.1

Other income (expense), net

0.0

17.9

0.0

58.1

47.3

52.8

Operating Income

2,106.0

1,708.3

1,339.1

Equity affiliates' income

148.6

154.5

151.4

115.5

103.5

125.1

Income from Continuing Operations before Taxes

6.9

^[4]

16.6

^[4]

0.0

2,132.2

1,742.7

1,365.4

Income tax provision

586.5

^[5]

418.3

369.4

Income from Continuing Operations

1,545.7

1,324.4

996.0

Income (loss) from Discontinued Operations, net of tax

(884.2)

(6.8)

(2.9)

Net Income

661.5

1,317.6

993.1

Less: Net Income Attributable to Noncontrolling Interests

30.4

39.7

1.4

Net Income Attributable to Air Products

631.1

1,277.9

991.7

1,515.3

1,284.7

994.6

(884.2)

(6.8)

(2.9)

Basic Earnings Per Common Share Attributable to Air Products

$ 631.1

$ 1,277.9

$ 991.7

$ 7

$ 5.98

$ 4.68

(4.08)

(0.03)

(0.02)

Diluted Earnings Per Common Share Attributable to Air Products

2.92

5.95

4.66

6.94

5.91

4.62

(4.05)

(0.03)

(0.01)

Weighted Average Common Shares Outstanding - Basic (in millions)

$ 2.89

$ 5.88

$ 4.61

216.4

214.9

212.7

Weighted Average Common Shares Outstanding - Diluted (in millions)

218.3

217.3

215.2

[1]	For additional information, see Note 3, Materials Technologies Separation.
[2]	For additional information, see Note 5, Business Restructuring and Cost Reduction Actions.
[3]	For additional information, see Note 16, Retirement Benefits.
[4]	For additional information, see Note 15, Debt.
[5]	Includes income tax expense for tax costs associated with business separation. For additional information, see Note 3, Materials Technologies Separation.

Consolidated Comprehensive Income Statement - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Other Comprehensive Income (Loss), net of tax [Abstract]
Net Income	$ 661.5	$ 1,317.6	$ 993.1
Translation adjustments, net of tax	9.9	(699.3)	(213.1)
Net gain (loss) on derivatives, net of tax	13.7	(35.0)	(15.2)
Pension and postretirement benefits, net of tax	(335.1)	(278.5)	(74.2)
Reclassification Adjustments [Abstract]
Currency translation adjustment	2.7	0.0	0.0
Derivatives, net of tax	(36.0)	20.8	(9.1)
Pension and postretirement benefits, net of tax	87.2	97.0	84.7
Total Other Comprehensive Income (Loss)	(257.6)	(895.0)	(226.9)
Comprehensive Income	403.9	422.6	766.2
Net income attributable to noncontrolling interests	30.4	39.7	1.4
Other Comprehensive Income (Loss) Attributable to Noncontrolling Interests	4.8	(11.0)	(5.6)
Comprehensive Income Attributable to Air Products	$ 368.7	$ 393.9	$ 770.4

Consolidated Comprehensive Income Statements (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Consolidated Comprehensive Income Statements [Abstract]
Tax effect on translation adjustments	$ (19.8)	$ 45.2	$ 36.5
Tax effect on net gain (loss) on derivatives	9.1	(16.0)	(13.6)
Tax effect on pension and postretirement benefits	(157.4)	(148.5)	(28.0)
Tax effect on derivatives reclassification adjustments	(9.4)	7.0	(1.9)
Tax effect on pension and postretirement benefits reclassification adjustments	$ 43.0	$ 47.7	$ 40.0

Consolidated Balance Sheets - USD ($)
$ in Millions

Sep. 30, 2016

Sep. 30, 2015

Current Assets

Cash and cash items

$ 1,501.3

$ 206.4

Trade receivables, net

1,439.9

1,406.2

Inventories

619.9

657.8

Contracts in progress, less progress billings

81.6

110.8

Prepaid expenses

99.6

67.0

Other receivables and current assets

555.6

343.5

Current assets of discontinued operations

19.4

1.8

Total Current Assets

4,317.3

2,793.5

Investment in net assets of and advances to equity affiliates

1,288.1

1,265.7

Plant and Equipment, net

^[1]

8,852.7

8,745.1

Noncurrent capital lease receivables

1,150.2

1,131.3

Intangible assets, net

488.0

508.3

1,221.7

1,350.2

Other noncurrent assets

737.3

648.6

Noncurrent assets of discontinued operations

0.0

891.8

Total Noncurrent Assets

13,738.0

14,541.0

Total Assets

18,055.3

17,334.5

Current Liabilities

Payables and accrued liabilities

1,810.6

1,641.7

Accrued income taxes

146.6

55.8

Short-term borrowings

935.8

1,494.3

Current portion of long-term debt

371.3

435.6

Current liabilities of discontinued operations

19.0

17.0

Total Current Liabilities

3,283.3

3,644.4

Long-term debt

4,918.1

3,949.1

Other noncurrent liabilities

1,873.4

1,554.0

Deferred income taxes

767.1

803.4

Noncurrent liabilities of discontinued operations

0.0

2.5

Total Noncurrent Liabilities

7,558.6

6,309.0

Total Liabilities

10,841.9

9,953.4

Commitments and Contingencies - See Note 17

Redeemable Noncontrolling Interest

0.0

Air Products Shareholders' Equity

Common stock

249.4

Capital in excess of par value

970.0

904.7

Retained earnings

10,475.5

10,580.4

Accumulated other comprehensive loss

(2,388.3)

(2,125.9)

Treasury stock, at cost

(2,227.0)

(2,359.6)

Total Air Products Shareholders' Equity

7,079.6

7,249.0

Noncontrolling Interests

133.8

132.1

Total Equity

7,213.4

7,381.1

Total Liabilities and Equity

$ 18,055.3

$ 17,334.5

[1]	Long-lived assets include plant and equipment, net.

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2016	Sep. 30, 2015
Air Products Shareholder's Equity [Abstract]
Common stock, par value	$ 1	$ 1
Common stock, issued shares	249,455,584	249,455,584
Treasury stock, shares	32,104,759	34,096,471

Consolidated Statements of Cash Flows - USD ($)
$ in Millions

12 Months Ended

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Operating Activities

Net Income

$ 661.5

$ 1,317.6

$ 993.1

Less: Net income attributable to noncontrolling interests

30.4

39.7

1.4

(Income) loss from discontinued operations

631.1

1,277.9

991.7

884.2

6.8

2.9

Income from continuing operations attributable to Air Products

1,515.3

1,284.7

994.6

Adjustments to reconcile income to cash provided by operating activities:

Depreciation and amortization

925.9

936.4

956.9

Deferred income taxes

62.9

2.9

125.5

6.9

^[1]

16.6

^[1]

0.0

Undistributed earnings of unconsolidated affiliates

0.0

(17.9)

0.0

(51.8)

(102.6)

(76.0)

(Gain) Loss on sale of assets and investments

(10.0)

(30.1)

4.3

Share-based compensation

37.6

45.7

44.0

Noncurrent capital lease receivables

85.5

(9.5)

20.0

Write-down of long-lived assets associated with restructuring

0.0

310.1

0.0

47.4

0.0

Other adjustments

155.2

48.1

60.7

Working capital changes that provided (used) cash, excluding effects of acquisitions and divestitures:

Trade receivables

(61.7)

(29.7)

(2.7)

Inventories

32.9

8.3

(23.5)

Contracts in progress, less progress billings

21.3

36.4

(5.6)

Other receivables

(12.2)

57.6

(33.0)

Payables and accrued liabilities

57.0

156.2

(237.9)

Other working capital

(57.4)

(4.1)

52.7

Cash Provided by Operating Activities

2,707.4

2,446.4

2,190.1

Investing Activities

Additions to plant and equipment

(1,055.8)

(1,265.6)

(1,362.7)

Acquisitions, less cash acquired

0.0

(34.5)

0.0

Investment in unconsolidated affiliates

0.0

(4.3)

Proceeds from collection of advance to affiliate

2.0

Proceeds from sale of assets and investments

85.5

55.3

45.6

Other investing activities

(1.7)

(1.4)

Cash Used for Investing Activities

(972.0)

(1,250.5)

(1,316.5)

Financing Activities

Long-term debt proceeds

960.4

340.3

463.4

Net increase (decrease) in commercial paper and short-term borrowings

(485.0)

(708.7)

(608.6)

(144.2)

284.0

148.7

Debt issuance costs

(11.7)

(2.2)

(2.4)

Dividends paid to shareholders

(721.2)

(677.5)

(627.7)

Proceeds from stock option exercises

141.3

121.3

141.6

Excess tax benefit from share-based compensation

33.2

31.9

28.3

Payment for subsidiary shares to noncontrolling interests

0.0

(278.4)

(0.5)

Other financing activities

(43.9)

(56.1)

(47.1)

Cash Provided By (Used for) Financing Activities

(271.1)

(945.4)

(504.3)

Discontinued Operations

Cash provided by (used for) operating activities

(79.9)

(8.6)

(3.0)

Cash provided by (used for) investing activities

(97.0)

(349.2)

(311.7)

Cash provided by (used for) financing activities

0.0

(157.1)

Cash Provided by (Used for) Discontinued Operations

(176.9)

(357.8)

(471.8)

Effect of Exchange Rate Changes on Cash

7.5

(22.9)

(11.3)

Increase (Decrease) in Cash and Cash Items

1,294.9

(130.2)

(113.8)

Cash and Cash Items - Beginning of Year

206.4

336.6

450.4

Cash and Cash Items - End of Period

1,501.3

206.4

336.6

Less: Cash and Cash Items - Discontinued Operations

0.0

Cash and Cash Items - Continuing Operations

$ 1,501.3

$ 206.4

$ 336.6

[1]	For additional information, see Note 15, Debt.

Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock [Member]	Capital in Excess of Par [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Air Products Shareholders' Equity [Member]	Noncontrolling Interests [Member]
Balance, beginning of period at Sep. 30, 2013	$ 7,198.9	$ 249.4	$ 799.2	$ 9,646.4	$ (1,020.6)	$ (2,632.3)	$ 7,042.1	$ 156.8
Net income	1,020.5			991.7			991.7	28.8
Other comprehensive income (loss)	(226.9)				(221.3)		(221.3)	(5.6)
Cash dividends	(641.8)			(641.8)			(641.8)
Share-based compensation expense	44.0		44.0				44.0
Issuance of treasury shares for stock option and award plans	125.4		(30.0)			155.4	125.4
Tax benefit of stock option and award plans	29.3		29.3				29.3
Dividends to noncontrolling interests	(24.4)							(24.4)
Purchase of noncontrolling interests	(0.5)		(0.5)				(0.5)
Other	(3.1)			(3.1)			(3.1)
Balance, end of period at Sep. 30, 2014	7,521.4	249.4	842.0	9,993.2	(1,241.9)	(2,476.9)	7,365.8	155.6
Net income	1,306.1			1,277.9			1,277.9	28.2
Other comprehensive income (loss)	(895.0)				(884.0)		(884.0)	(11.0)
Cash dividends	(687.9)			(687.9)			(687.9)
Share-based compensation expense	43.7		43.7				43.7
Issuance of treasury shares for stock option and award plans	102.2		(15.1)			117.3	102.2
Tax benefit of stock option and award plans	32.0		32.0				32.0
Dividends to noncontrolling interests	(38.0)							(38.0)
Purchase of noncontrolling interests	(0.5)		(0.3)				(0.3)	(0.2)
Other	(2.9)		2.4	(2.8)			(0.4)	(2.5)
Balance, end of period at Sep. 30, 2015	7,381.1	249.4	904.7	10,580.4	(2,125.9)	(2,359.6)	7,249.0	132.1
Net income	661.5			631.1			631.1	30.4
Other comprehensive income (loss)	(257.6)				(262.4)		(262.4)	4.8
Cash dividends	(733.7)			(733.7)			(733.7)
Share-based compensation expense	37.6		37.6				37.6
Issuance of treasury shares for stock option and award plans	127.1		(5.5)			132.6	127.1
Tax benefit of stock option and award plans	33.2		33.2				33.2
Dividends to noncontrolling interests	(33.6)							(33.6)
Other	(2.2)			(2.3)			(2.3)	0.1
Balance, end of period at Sep. 30, 2016	$ 7,213.4	$ 249.4	$ 970.0	$ 10,475.5	$ (2,388.3)	$ (2,227.0)	$ 7,079.6	$ 133.8

Consolidated Statements of Equity (Parenthetical) - $ / shares	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Statement of Stockholders' Equity [Abstract]
Dividends per share	$ 0.86	$ 0.86	$ 0.86	$ 0.81	$ 0.81	$ 0.81	$ 0.81	$ 0.77	$ 3.39	$ 3.2	$ 3.02

Major Accounting Policies	12 Months Ended
Major Accounting Policies	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Major Accounting Policies	1. MAJOR ACCOUNTING POLICIES Basis of Presentation and Consolidation Principles The accompanying consolidated financial statements of Air Products and Chemicals, Inc. were prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and include the accounts of Air Products and Chemicals, Inc. and those of its controlled subsidiaries (“we,” “our,” “us,” the “Company,” “Air Products,” or “registrant”), which are generally majority owned. Intercompany transactions and balances are eliminated in consolidation. We consolidate all entities that we control. The general condition for control is ownership of a majority of the voting interests of an entity. Control may also exist in arrangements where we are the primary beneficiary of a variable interest entity (VIE). An entity that has both the power to direct the activities that most significantly impact the economic performance of a VIE and the obligation to absorb the losses or receive the benefits significant to the VIE is considered the primary beneficiary of that entity. We have determined that we are not a primary beneficiary in any material VIE. Certain prior year information has been reclassified to conform to the 2016 presentation. Estimates and Assumptions The preparation of the financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Revenue Recognition Revenue from product sales is recognized as risk and title to the product transfer to the customer (which generally occurs at the time shipment is made), the sales price is fixed or determinable, and collectability is reasonably assured. Sales returns and allowances are not a business practice in the industry. Revenue from equipment sale contracts is recorded primarily using the percentage-of-completion method. Under this method, revenue from the sale of major equipment, such as liquefied natural gas (LNG) heat exchangers and large air separation units, is recognized based on labor hours or costs incurred to date compared with total estimated labor hours or costs to be incurred. When adjustments in estimated total contract revenues or estimated total costs or labor hours are required, any changes in the estimated profit from prior estimates are recognized in the current period for the inception-to-date effect of such change. Changes in estimates on projects accounted for under the percentage-of-completion method favorably impacted operating income by approximately $20 in fiscal year 2016, primarily during the fourth quarter. Our changes in estimates would not have significantly impacted amounts recorded in prior years. Changes in estimates during fiscal years 2015 and 2014 were not significant. Certain contracts associated with facilities that are built to provide product to a specific customer are required to be accounted for as leases. In cases where operating lease treatment is necessary, there is no difference in revenue recognition over the life of the contract as compared to accounting for the contract as product sales. In cases where capital lease treatment is necessary, the timing of revenue and expense recognition is impacted. Revenue and expense are recognized up front for the sale of equipment component of the contract as compared to revenue recognition over the life of the arrangement under contracts not qualifying as capital leases. Additionally, a portion of the revenue representing interest income from the financing component of the lease receivable is reflected as sales over the life of the contract. Allowances for credit losses associated with capital lease receivables are recorded using the specific identification method. As of 30 September 2016 and 2015, the credit quality of capital lease receivables did not require an allowance for credit losses. If an arrangement involves multiple deliverables, the delivered items are considered separate units of accounting if the items have value on a stand-alone basis. Revenues are allocated to each deliverable based upon relative selling prices derived from company specific evidence. Amounts billed for shipping and handling fees are classified as sales in the consolidated income statements. Amounts billed for sales and use taxes, value-added taxes, and certain excise and other specific transactional taxes imposed on revenue-producing transactions are presented on a net basis and excluded from sales in the consolidated income statements. We record a liability until remitted to the respective taxing authority. Cost of Sales Cost of sales predominantly represents the cost of tangible products sold. These costs include labor, raw materials, plant engineering, power, depreciation, production supplies and materials packaging costs, and maintenance costs. Costs incurred for shipping and handling are also included in cost of sales. Depreciation Depreciation is recorded using the straight-line method, which deducts equal amounts of the cost of each asset from earnings every year over its expected economic useful life. The principal lives for major classes of plant and equipment are summarized in Note 9, Plant and Equipment, net. Selling and Administrative The principal components of selling and administrative expenses are compensation, advertising, and promotional costs. Postemployment Benefits We provide termination benefits to employees as part of ongoing benefit arrangements and record a liability for termination benefits when probable and estimable. These criteria are met when management, with the appropriate level of authority, approves and commits to its plan of action for termination; the plan identifies the employees to be terminated and their related benefits; and the plan is to be completed within one year. We do not provide one-time benefit arrangements of significance. Fair Value Measurements We are required to measure certain assets and liabilities at fair value, either upon initial measurement or for subsequent accounting or reporting. For example, fair value is used in the initial measurement of net assets acquired in a business combination; on a recurring basis in the measurement of derivative financial instruments; and on a nonrecurring basis when long-lived assets are written down to fair value when held for sale or determined to be impaired. Refer to Note 14, Fair Value Measurements, for information on the methods and assumptions used in our fair value measurements. Financial Instruments We address certain financial exposures through a controlled program of risk management that includes the use of derivative financial instruments. The types of derivative financial instruments permitted for such risk management programs are specified in policies set by management. Refer to Note 13, Financial Instruments, for further detail on the types and use of derivative instruments into which we enter. Major financial institutions are counterparties to all of these derivative contracts. We have established counterparty credit guidelines and generally enter into transactions with financial institutions of investment grade or better. Management believes the risk of incurring losses related to credit risk is remote, and any losses would be immaterial to the consolidated financial results, financial condition, or liquidity. We recognize derivatives on the balance sheet at fair value. On the date the derivative instrument is entered into, we generally designate the derivative as either (1) a hedge of a forecasted transaction or of the variability of cash flows to be received or paid related to a recognized asset or liability (cash flow hedge), (2) a hedge of a net investment in a foreign operation (net investment hedge), or (3) a hedge of the fair value of a recognized asset or liability (fair value hedge). The following details the accounting treatment of our cash flow, fair value, net investment, and non-designated hedges: Changes in the fair value of a derivative that is designated as and meets the cash flow hedge criteria are recorded in Accumulated other comprehensive loss (AOCL) to the extent effective and then recognized in earnings when the hedged items affect earnings. Changes in the fair value of a derivative that is designated as and meets all the required criteria for a fair value hedge, along with the gain or loss on the hedged asset or liability that is attributable to the hedged risk, are recorded in current period earnings. Changes in the fair value of a derivative and foreign currency debt that are designated as and meet all the required criteria for a hedge of a net investment are recorded as translation adjustments in AOCL. Changes in the fair value of a derivative that is not designated as a hedge are recorded immediately in earnings. We formally document the relationships between hedging instruments and hedged items, as well as our risk management objective and strategy for undertaking various hedge transactions. This process includes relating derivatives that are designated as fair value or cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. We also formally assess, at the inception of the hedge and on an ongoing basis, whether derivatives are highly effective in offsetting changes in fair values or cash flows of the hedged item. If it is determined that a derivative is not highly effective as a hedge, or if a derivative ceases to be a highly effective hedge, we will discontinue hedge accounting with respect to that derivative prospectively. Foreign Currency Since we do business in many foreign countries, fluctuations in currency exchange rates affect our financial position and results of operations. In most of our foreign operations, the local currency is considered the functional currency. Foreign subsidiaries translate their assets and liabilities into U.S. dollars at current exchange rates in effect at the end of the fiscal period. The gains or losses that result from this process are shown as translation adjustments in AOCI in the equity section of the balance sheet. The revenue and expense accounts of foreign subsidiaries are translated into U.S. dollars at the average exchange rates that prevail during the period. Therefore, the U.S. dollar value of these items on the income statement fluctuates from period to period, depending on the value of the dollar against foreign currencies. Some transactions are made in currencies different from an entity’s functional currency. Gains and losses from these foreign currency transactions are generally included in other income (expense), net on our consolidated income statements as they occur. Environmental Expenditures Accruals for environmental loss contingencies are recorded when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. Remediation costs are capitalized if the costs improve the Company’s property as compared with the condition of the property when originally constructed or acquired, or if the costs prevent environmental contamination from future operations. We expense environmental costs related to existing conditions resulting from past or current operations and from which no current or future benefit is discernible. The amounts charged to income from continuing operations related to environmental matters totaled $27.0 in fiscal 2016, $28.3 in 2015, and $35.1 in 2014. The measurement of environmental liabilities is based on an evaluation of currently available information with respect to each individual site and considers factors such as existing technology, presently enacted laws and regulations, and prior experience in remediation of contaminated sites. An environmental liability related to cleanup of a contaminated site might include, for example, a provision for one or more of the following types of costs: site investigation and testing costs, cleanup costs, costs related to soil and water contamination resulting from tank ruptures, post-remediation monitoring costs, and outside legal fees. These liabilities include costs related to other potentially responsible parties to the extent that we have reason to believe such parties will not fully pay their proportionate share. They do not take into account any claims for recoveries from insurance or other parties and are not discounted. As assessments and remediation progress at individual sites, the amount of projected cost is reviewed, and the liability is adjusted to reflect additional technical and legal information that becomes available. Management has an established process in place to identify and monitor the Company’s environmental exposures. An environmental accrual analysis is prepared and maintained that lists all environmental loss contingencies, even where an accrual has not been established. This analysis assists in monitoring the Company’s overall environmental exposure and serves as a tool to facilitate ongoing communication among the Company’s technical experts, environmental managers, environmental lawyers, and financial management to ensure that required accruals are recorded and potential exposures disclosed. Given inherent uncertainties in evaluating environmental exposures, actual costs to be incurred at identified sites in future periods may vary from the estimates. Refer to Note 17, Commitments and Contingencies, for additional information on the Company’s environmental loss contingencies. The accruals for environmental liabilities are reflected in the consolidated balance sheets, primarily as part of other noncurrent liabilities. Litigation In the normal course of business, we are involved in legal proceedings. We accrue a liability for such matters when it is probable that a liability has been incurred and the amount can be reasonably estimated. When only a range of possible loss can be established, the most probable amount in the range is accrued. If no amount within this range is a better estimate than any other amount within the range, the minimum amount in the range is accrued. The accrual for a litigation loss contingency includes estimates of potential damages and other directly related costs expected to be incurred. Refer to Note 17, Commitments and Contingencies, for additional information on our current legal proceedings. Share-Based Compensation We have various share-based compensation programs, which include deferred stock units, stock options, and restricted stock. We expense the grant-date fair value of these awards over the vesting period during which employees perform related services. Expense recognition is accelerated for retirement-eligible individuals who would meet the requirements for vesting of awards upon their retirement. We utilize a Black Scholes model to value stock option awards. The grant-date fair value of the deferred stock units tied to a market condition is estimated using a Monte Carlo simulation model. Income Taxes We account for income taxes under the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the tax effects of temporary differences between the financial reporting and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to be recovered or settled. A principal temporary difference results from the excess of tax depreciation over book depreciation because accelerated methods of depreciation and shorter useful lives are used for income tax purposes. The cumulative impact of a change in tax rates or regulations is included in income tax expense in the period that includes the enactment date. We recognize deferred tax assets net of existing valuation allowance to the extent we believe that these assets are more likely than not to be realized considering all available evidence. A tax benefit for an uncertain tax position is recognized when it is more likely than not that the position will be sustained upon examination based on its technical merits. This position is measured as the largest amount of tax benefit that is greater than 50% likely of being realized. Interest and penalties related to unrecognized tax benefits are recognized as a component of income tax expense. For additional information regarding our income taxes, refer to Note 23, Income Taxes. Cash and Cash Items Cash and cash items include cash, time deposits, and certificates of deposit acquired with an original maturity of three months or less. Trade Receivables, net Trade receivables comprise amounts owed to us through our operating activities and are presented net of allowances for doubtful accounts. The allowances for doubtful accounts represent estimated uncollectible receivables associated with potential customer defaults on contractual obligations. A provision for customer defaults is made on a general formula basis when it is determined that the risk of some default is probable and estimable but cannot yet be associated with specific customers. The assessment of the likelihood of customer defaults is based on various factors, including the length of time the receivables are past due, historical experience, and existing economic conditions. The allowance also includes amounts for certain customers where a risk of default has been specifically identified, considering factors such as the financial condition of the customer and customer disputes over contractual terms and conditions. Allowance for doubtful accounts were $56.8 and $48.5 as of fiscal year end 30 September 2016 and 2015, respectively. Provisions to the allowance for doubtful accounts charged against income were $22.8, $26.3 and $16.4 in 2016, 2015, and 2014, respectively. Inventories Inventories are stated at the lower of cost or market. We write down our inventories for estimated obsolescence or unmarketable inventory based upon assumptions about future demand and market conditions. We utilize the last-in, first-out (LIFO) method for determining the cost of inventories in the United States for the Industrial Gases and the Materials Technologies segments. Inventories for these segments outside of the United States are accounted for on the first-in, first-out (FIFO) method, as the LIFO method is not generally permitted in the foreign jurisdictions where these segments operate. The inventories of the Industrial Gases – Global and the Corporate and other segments on a worldwide basis, as well as all other inventories, are accounted for on the FIFO basis. At the business segment level, inventories are recorded at FIFO and the LIFO pool adjustments are not allocated to the business segments. Equity Investments The equity method of accounting is used when we exercise significant influence but do not have operating control, generally assumed to be 20% –50% ownership. Under the equity method, original investments are recorded at cost and adjusted by our share of undistributed earnings or losses of these companies. Equity investments are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the investment may not be recoverable. Plant and Equipment Plant and equipment is stated at cost less accumulated depreciation. Construction costs, labor, and applicable overhead related to installations are capitalized. Expenditures for additions and improvements that extend the lives or increase the capacity of plant assets are capitalized. The costs of maintenance and repairs of plant and equipment are charged to expense as incurred. Fully depreciated assets are retained in the gross plant and equipment and accumulated depreciation accounts until they are removed from service. In the case of disposals, assets and related depreciation are removed from the accounts, and the net amounts, less proceeds from disposal, are included in income. Refer to Note 9, Plant and Equipment, net, for further detail. Computer Software We capitalize costs incurred to purchase or develop software for internal use. Capitalized costs include purchased computer software packages, payments to vendors/consultants for development and implementation or modification to a purchased package to meet our requirements, payroll and related costs for employees directly involved in development, and interest incurred while software is being developed. Capitalized computer software costs are included in the balance sheet classification plant and equipment, net and depreciated over the estimated useful life of the software, generally a period of three to ten years. Capitalized Interest As we build new plant and equipment, we include in the cost of these assets a portion of the interest payments we make during the year. The amount of capitalized interest was $32.9, $49.1, and $33.0 in 2016, 2015, and 2014, respectively. Impairment of Long-Lived Assets Long-lived assets are grouped for impairment testing at the lowest level for which there are identifiable cash flows that are largely independent of the cash flows of other assets and liabilities and are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset group may not be recoverable. We assess recoverability by comparing the carrying amount of the asset group to estimated undiscounted future cash flows expected to be generated by the asset group. If an asset group is considered impaired, the impairment loss to be recognized is measured as the amount by which the asset group’s carrying amount exceeds its fair value. Long-lived assets to be sold are reported at the lower of carrying amount or fair value less cost to sell. Asset Retirement Obligations The fair value of a liability for an asset retirement obligation is recognized in the period in which it is incurred. The fair value of the liability is measured using discounted estimated cash flows and is adjusted to its present value in subsequent periods as accretion expense is recorded. The corresponding asset retirement costs are capitalized as part of the carrying amount of the related long-lived asset and depreciated over the asset’s useful life. Our asset retirement obligations are primarily associated with Industrial Gases on-site long-term supply contracts, under which we have built a facility on land owned by the customer and are obligated to remove the facility at the end of the contract term. Our asset retirement obligations totaled $119.9 and $109.4 at 30 September 2016 and 2015, respectively. Goodwill Business combinations are accounted for using the acquisition method. The purchase price is allocated to the assets acquired and liabilities assumed based on their estimated fair market values. Any excess purchase price over the fair market value of the net assets acquired, including identified intangibles, is recorded as goodwill. Preliminary purchase price allocations are made at the date of acquisition and finalized when information needed to affirm underlying estimates is obtained, within a maximum allocation period of one year. Goodwill is subject to impairment testing at least annually. In addition, goodwill is tested more frequently if a change in circumstances or the occurrence of events indicates that potential impairment exists. Refer to Note 10, Goodwill, for further detail. Intangible Assets Intangible assets with determinable lives primarily consist of customer relationships, purchased patents and technology, and land use rights. The cost of intangible assets with determinable lives is amortized on a straight-line basis over the estimated period of economic benefit. No residual value is estimated for these intangible assets. Indefinite-lived intangible assets consist of trade names and trademarks. Indefinite-lived intangibles are subject to impairment testing at least annually. In addition, intangible assets are tested more frequently if a change in circumstances or the occurrence of events indicates that potential impairment exists. Customer relationships are generally amortized over periods of five to twenty-five years. Purchased patents and technology and other are generally amortized over periods of five to twenty years. Land use rights, which are included in other intangibles, are generally amortized over a period of fifty years. Amortizable lives are adjusted whenever there is a change in the estimated period of economic benefit. Refer to Note 11, Intangible Assets, for further detail. Retirement Benefits The cost of pension benefits is recognized over the employees’ service period. We are required to use actuarial methods and assumptions in the valuation of defined benefit obligations and the determination of expense. Differences between actual and expected results or changes in the value of obligations and plan assets are not recognized in earnings as they occur but, rather, systematically and gradually over subsequent periods. Refer to Note 16, Retirement Benefits, for disclosures related to our pension and other postretirement benefits.

New Accounting Guidance	12 Months Ended
New Accounting Guidance	Sep. 30, 2016
New Accounting Guidance [Abstract]
New Accounting Guidance	2. NEW ACCOUNTING GUIDANCE Accounting Guidance Implemented in 2016 Balance Sheet Classification of Deferred Taxes In November 2015, the Financial Accounting Standards Board (FASB) issued guidance to simplify the presentation of deferred income taxes by requiring that all deferred tax liabilities and assets be classified as noncurrent on the balance sheet. As of the first quarter of fiscal year 2016, we adopted this guidance on a retrospective basis. Accordingly, prior year amounts have been reclassified to conform to the current year presentation. The guidance, which did not change the existing requirement to net deferred tax assets and liabilities within a jurisdiction, resulted in a reclassification adjustment that increased noncurrent deferred tax assets by $13.7 and decreased noncurrent deferred tax liabilities by $99.9 as of 30 September 2015. Discontinued Operations In April 2014, the FASB issued an update to change the criteria for determining which disposals qualify as a discontinued operation and to expand related disclosure requirements. Under the new guidance, a disposal is required to be reported in discontinued operations if the disposal represents a strategic shift that has or will have a major effect on operations and financial results. We adopted this guidance prospectively for new disposals and new disposal groups classified as held for sale beginning in the first quarter of fiscal year 2016. This guidance had no impact on our consolidated financial statements upon adoption. As a result of actions taken during the second quarter of 2016, our Energy-from-Waste segment has been reported as a discontinued operation. Refer to Note 4, Discontinued Operations, for additional information. New Accounting Guidance to be Implemented Revenue Recognition In May 2014, the FASB issued guidance based on the principle that revenue is recognized in an amount expected to be collected and to which the entity expects to be entitled in exchange for the transfer of goods or services. As originally issued, this guidance was effective for us beginning in fiscal year 2018. In August 2015, the FASB deferred the effective date by one year while providing the option to early adopt the standard on the original effective date. Accordingly, we will have the option to adopt the standard in either fiscal year 2018 or 2019. The guidance can be adopted either retrospectively or as a cumulative-effect adjustment as of the date of adoption. We are in the initial stages of evaluating the adoption alternatives allowed by the new standard and the impact the standard is expected to have on our consolidated financial statements. As the new standard will supersede substantially all existing revenue guidance affecting us under U.S. GAAP, it could impact the timing of revenue and cost recognition across all of our business segments, in addition to our business processes and our information technology systems. As a result, our evaluation of the effect of the new standard will extend over future periods. Consolidation Analysis In February 2015, the FASB issued an update to amend current consolidation guidance. The guidance impacts the analysis an entity must perform in determining if it should consolidate certain legal entities such as limited partnerships, limited liability corporations, and securitization structures. The guidance is effective beginning fiscal year 2017, with early adoption permitted. The guidance may be applied retrospectively or using a modified retrospective approach by recording a cumulative-effect adjustment to equity as of the beginning of the fiscal year of adoption. This guidance will not have a significant impact on our consolidated financial statements. Debt Issuance Costs In April 2015, the FASB issued guidance requiring that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of the debt instead of as a separate deferred asset. In August 2015, the FASB issued an update to incorporate the U.S. Securities and Exchange Commission (SEC) Staff guidance which allows debt issuance costs associated with a line-of-credit arrangement to be presented as a deferred asset that is subsequently amortized over the term of the arrangement, regardless of whether there are any outstanding borrowings. This change in accounting principle will be adopted retrospectively beginning in fiscal year 2017. This guidance will not have a significant impact on our consolidated financial statements. Leases In February 2016, the FASB issued guidance which requires lessees to recognize a right-of-use asset and lease liability on the balance sheet for all leases, including operating leases, with a term in excess of 12 months. The guidance also expands the quantitative and qualitative disclosure requirements. The guidance is effective in fiscal year 2020, with early adoption permitted, and must be applied using a modified retrospective approach. We are currently evaluating the impact of adopting this new guidance on the consolidated financial statements, and we have started the assessment process by evaluating the population of leases under the revised definition of what qualifies as a leased asset. The Company is the lessee under various agreements for real estate, distribution equipment, aircraft, and vehicles that are currently accounted for as operating leases as discussed in Note 12, Leases. The new guidance requires the lessee to record operating leases on the balance sheet with a right-of-use asset and corresponding liability for future payment obligations. Share-Based Compensation In March 2016, the FASB issued an update to simplify the accounting for employee share-based payments, including the income tax impacts, the classification on the statement of cash flows, and forfeitures. The amendments are effective for fiscal year 2018, with early adoption permitted. We continue to evaluate the impact of this guidance on our consolidated financial statements and the timing of adoption. Upon adoption, we currently anticipate a greater degree of volatility in the income tax provision and effective income tax rate as a result of the new guidance, which requires excess tax benefits and deficiencies to be recognized in the income statement rather than in additional paid-in capital on the balance sheet. Derivative Contract Novations In March 2016, the FASB issued guidance to clarify that a change in the counterparty to a derivative instrument that has been designated as a hedging instrument does not, in and of itself, require re-designation of that hedging relationship provided that all other hedge accounting criteria continue to be met. This guidance is effective in fiscal year 2018, with early adoption permitted. We do not expect adoption of this guidance to have a significant impact on our consolidated financial statements. Credit Losses on Financial Instruments In June 2016, the FASB issued an update on the measurement of credit losses, which requires measurement and recognition of expected credit losses for financial assets, including trade receivables and capital lease receivables, held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. The method to determine a loss is different from the existing guidance, which requires a credit loss to be recognized when it is probable. The guidance is effective beginning fiscal year 2021, with early adoption permitted beginning fiscal year 2020. We are currently evaluating the impact this update will have on our consolidated financial statements. Cash Flow Statement Classification In August 2016, the FASB issued guidance to reduce diversity in practice on how certain cash receipts and cash payments are classified in the statement of cash flows. The guidance is effective beginning fiscal year 2019, with early adoption permitted, and should be applied retrospectively. We are currently evaluating the impact of adopting this new guidance on the consolidated financial statements.

The entire disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Business Separation	12 Months Ended
Business Separation	Sep. 30, 2016
Restructuring and Related Activities [Abstract]
Business Separation [Text Block]	3. MATERIALS TECHNOLOGIES SEPARATION On 16 September 2015, the Company announced plans to separate its Materials Technologies business, which contains two divisions, Electronic Materials (EMD) and Performance Materials (PMD), into an independent publicly traded company and distribute to Air Products shareholders all of the shares of the new public company in a tax-free distribution (a “spin-off”). Versum Materials, Inc., or Versum, was formed as the new company to hold the Materials Technologies business subject to spin-off. On 6 May 2016, the Company entered into an agreement to sell certain subsidiaries and assets comprising the PMD division to Evonik Industries AG for $3.8 billion in cash and the assumption of certain liabilities. As a result, the Company moved forward with the planned spin-off of Versum containing only the EMD division. As further discussed below, Air Products completed the separation of its EMD division through the spin-off of Versum on 1 October 2016. As a result, the historical results of the EMD division will be presented as a discontinued operation beginning in fiscal year 2017. The historical results of the PMD division will be reflected as a discontinued operation when it becomes probable for the sale to occur and actions required to meet the plan of sale indicate that it is unlikely that significant changes will occur. The PMD division is not classified as held for sale due to certain conditions of the sale, including regulatory and anti-trust requirements. We continue to evaluate the progress of the sale of the PMD division to determine when it should be presented as a discontinued operation. In fiscal year 2016, we incurred separation costs of $52.2 ($48.3 after-tax, or $.22 per share), primarily related to legal, advisory, and indirect tax costs associated with these transactions. The costs are reflected on the consolidated income statements as “Business separation costs.” A significant portion of these costs were not tax deductible because they were directly related to the plan for the tax-free spin-off of Versum. Our income tax provision includes additional tax expense related to the separation of $51.8 ($.24 per share), of which $45.7 resulted from a dividend declared during the third quarter of 2016 to repatriate $443.8 from a subsidiary in South Korea to the U.S. due to the intended separation of the EMD division from the industrial gases business in South Korea. Previously, most of these foreign earnings were considered to be indefinitely reinvested. On 30 September 2016, in anticipation of the spin-off, Versum entered into certain financing transactions to allow for a cash distribution of $550.0 and a distribution in-kind of notes issued by Versum with an aggregate principal amount of $425.0 to Air Products. Air Products then exchanged these notes with certain financial institutions for $418.3 of Air Products’ outstanding commercial paper. The exchange resulted in a loss of $6.9 ($4.3 after-tax, or $.02 per share) and has been reflected on the consolidated income statements as “Loss on extinguishment of debt.” This loss is deductible for tax purposes. This non-cash exchange was excluded from the consolidated statements of cash flows. Refer to Note 15, Debt, for additional information on the Versum financing. Subsequent Event On 1 October 2016 (the distribution date), Air Products completed the spin-off of Versum into a separate and independent public company by way of a distribution to the Air Products’ stockholders of all of the then issued and outstanding shares of common stock of Versum on the basis of one share of Versum common stock for every two shares of Air Products’ common stock held as of the close of business on 21 September 2016 (the record date for the distribution). Fractional shares of Versum common stock were not distributed to Air Products common stockholders. Air Products’ stockholders received cash in lieu of fractional shares. As a result of the distribution, Versum Materials, Inc. is now an independent public company and its common stock is listed under the symbol “VSM” on the New York Stock Exchange.

Discontinued Operations

12 Months Ended

Sep. 30, 2016

Discontinued Operations [Abstract]

Discontinued Operations

4. Discontinued Operations

Energy-from-Waste (EfW)

On 29 March 2016, the Board of Directors approved the Company’s exit of its EfW business. As a result, efforts to start up and operate the two EfW projects located in Tees Valley, United Kingdom, have been discontinued. The decision to exit the business and stop development of the projects was based on continued difficulties encountered and the Company’s conclusion, based on testing and analysis completed during the second quarter of fiscal year 2016, that significant additional time and resources would be required to make the projects operational. The EfW segment is presented as a discontinued operation. Prior year EfW business segment information has been reclassified to conform to current year presentation.

During the second quarter of fiscal year 2016, we recorded a loss of $945.7 ($846.6 after-tax) for the disposal of the business. Income tax benefits related only to one of the projects, as the other did not qualify for a local tax deduction. This loss included $913.5 to write down plant assets, previously recorded as construction in progress, to their estimated net realizable value of $20.0 and $32.2 to record a liability for plant disposition and other costs. We estimated the net realizable value of the projects as of 31 March 2016 assuming an orderly liquidation of assets capable of being marketed on a secondary equipment market based on market quotes and our experience with selling similar equipment. An asset’s orderly liquidation value is the amount that could be realized from a liquidation sale, given a reasonable period of time to find a buyer, selling the asset in the existing condition where it is located, and assuming the highest and best use of the asset by market participants. There have been no significant changes in the estimated net realizable value as of 30 September 2016. A valuation allowance of $58.0 and unrecognized tax benefits of $7.9 were recorded relating to deferred tax assets on capital assets generated from the loss.

The following table summarizes the carrying amount of the accrual for our actions to dispose of the EfW business at 30 September
2016, which is included in current liabilities of discontinued operations:
		Asset		Contract
		Impairment		Actions/Other		Total
	Loss on disposal of business	$	913.5	$	32.2	$	945.7
	Noncash expenses		(913.5)		-		(913.5)
	Cash expenditures		-		(18.6)		(18.6)
	Currency translation adjustment		-		(1.4)		(1.4)
	30 September 2016	$	-	$	12.2	$	12.2

The results of EfW discontinued operations are summarized below:

		2016		2015		2014

Loss before taxes	$	(41.0)	$	(9.2)	$	(10.9)
Income tax provision		3.4		2.4		3.4
Loss from operations of discontinued operations		(37.6)		(6.8)		(7.5)
Loss on disposal, net of tax		(846.6)		-		-
Loss from Discontinued Operations, net of tax	$	(884.2)	$	(6.8)	$	(7.5)

The loss from operations of EfW discontinued operations primarily relates to land lease costs, commercial and administrative costs, and cost incurred for ongoing project exit activities.

Assets and liabilities of the EfW discontinued operations consist of the following:
			30 September		30 September
			2016		2015
	Plant and equipment	$	18.2	$	-
	Other current assets		1.2		1.8
	Total Current Assets	$	19.4	$	1.8

	Plant and equipment	$	-	$	891.8
	Total Noncurrent Assets	$	-	$	891.8

	Payables and accrued liabilities	$	19.0	$	17.0
	Total Current Liabilities	$	19.0	$	17.0

	Other noncurrent liabilities	$	-	$	2.5
	Total Noncurrent Liabilities	$	-	$	2.5

Homecare

In 2012, the Board of Directors authorized the sale of our Homecare business. We sold the majority of our Homecare business to The Linde Group in 2012. In 2014, a gain of $3.9 was recognized for the sale of the remaining Homecare business, which was primarily in the United Kingdom and Ireland, and the settlement of contingencies related to the 2012 sale to The Linde Group.

The results of the Homecare discontinued operations are summarized below:

		2016		2015		2014
Sales	$	-	$	-	$	8.5

Income before taxes	$	-	$	-	$	.7
Income tax provision		-		-		-
Income from operations of discontinued operations		-		-		.7
Gain on sale of business, net of tax		-		-		3.9
Income (Loss) from Discontinued Operations, net of tax	$	-	$	-	$	4.6

As of 30 September 2016 and 2015, there were no assets or liabilities classified as discontinued operations relating to the Homecare business.

The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

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Business Restructuring and Cost Reduction Actions [Abstract]

Business Restructuring and Cost Reduction Actions

12 Months Ended

Sep. 30, 2016

Business Restructuring and Cost Reduction Actions

5. BUSINESS RESTRUCTURING AND COST REDUCTION ACTIONS

The charges we record for business restructuring and cost reduction actions have been excluded from segment operating income.

Cost Reduction Actions

In fiscal year 2016, we recognized an expense of $33.9 ($24.0 after-tax, or $.11 per share) for severance and other benefits related to cost reduction actions which resulted in the elimination of approximately 700 positions. The expenses related primarily to the Industrial Gases – Americas and the Industrial Gases – EMEA segments.

The following table summarizes the carrying amount of the accrual for cost reduction actions at 30 September 2016:


	Severance and
	Other Benefits
2016 Charge	$	33.9
Amount reflected in pension liability		(.9)
Cash expenditures		(20.4)
Currency translation adjustment		.3
30 September 2016	$	12.9

Business Realignment and Reorganization

On 18 September 2014, we announced plans to reorganize the Company, including realignment of our businesses in new reporting segments and other organizational changes, effective as of 1 October 2014. As a result of this reorganization, we incurred severance and other charges.

In fiscal year 2015, we recognized an expense of $207.7 ($153.2 after-tax, or $.71 per share). Severance and other benefits totaled $151.9 and related to the elimination of approximately 2,000 positions. Asset and associated contract actions totaled $55.8 and related primarily to a plant shutdown in the Corporate and other segment and the exit of product lines within the Industrial Gases – Global and Materials Technologies segments. The 2015 charges related to the segments as follows: $31.7 in Industrial Gases – Americas, $52.2 in Industrial Gases – EMEA, $10.3 in Industrial Gases – Asia, $37.0 in Industrial Gases – Global, $27.6 in Materials Technologies, and $48.9 in Corporate and other.

During the fourth quarter of 2014, an expense of $12.7 ($8.2 after-tax, or $.04 per share) was incurred relating to the elimination of approximately 50 positions. The 2014 charge related to the segments as follows: $2.9 in Industrial Gases – Americas, $3.1 in Industrial Gases – EMEA, $1.5 in Industrial Gases – Asia, $1.5 in Industrial Gases – Global, $1.6 in Materials Technologies, and $2.1 in Corporate and other.

The following table summarizes the carrying amount of the accrual for the business realignment and reorganization at
30 September 2016:
	Severance and		Asset
	Other Benefits		Actions/Other		Total
2014 Charge	$	12.7	$	-	$	12.7
Cash expenditures		(2.2)		-		(2.2)
30 September 2014	$	10.5	$	-	$	10.5
2015 Charge		151.9		55.8		207.7
Amount reflected in pension liability		(14.0)		-		(14.0)
Noncash expenses		-		(47.4)		(47.4)
Cash expenditures		(113.5)		(1.2)		(114.7)
Currency translation adjustment		(.4)		-		(.4)
30 September 2015	$	34.5	$	7.2	$	41.7
Cash expenditures		(34.1)		(3.8)		(37.9)
Currency translation adjustment		(.4)		-		(.4)
30 September 2016	$	-	$	3.4	$	3.4

Business Combinations	12 Months Ended
Business Combinations	Sep. 30, 2016
Business Combinations
Business Combinations	6. Business Combination On 30 December 2014, we acquired our partner’s equity ownership interest in a liquefied atmospheric industrial gases production joint venture in North America for $22.6, which increased our ownership from 50% to 100%. The transaction was accounted for as a business combination, and subsequent to the acquisition, the results are consolidated within our Industrial Gases – Americas segment. The assets acquired, primarily plant and equipment, were recorded at their fair market values as of the acquisition date. The acquisition date fair value of the previously held equity interest was determined using a discounted cash flow analysis under the income approach. The twelve months ended 30 September 2015 include a gain of $17.9 ($11.2 after-tax, or $.05 per share) as a result of revaluing our previously held equity interest to fair value as of the acquisition date. This gain is reflected on the consolidated income statements as “Gain on previously held equity interest.”

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Equity Method Investments and Joint Ventures [Abstract]

Inventories

12 Months Ended

Sep. 30, 2016

Inventory Disclosure [Abstract]

Inventories

7. Inventories

The components of inventories are as follows:

30 September		2016		2015
Inventories at FIFO cost
Finished goods	$	456.7	$	494.9
Work in process		38.2		34.4
Raw materials, supplies and other		204.0		229.3
		698.9		758.6
Less: Excess of FIFO cost over LIFO cost		(79.0)		(100.8)
Inventories	$	619.9	$	657.8

Inventories valued using the LIFO method comprised 34.9% and 35.8% of consolidated inventories before LIFO adjustment at 30 September 2016 and 2015, respectively. Liquidation of LIFO inventory layers in 2016, 2015, and 2014 did not materially affect the results of operations.

FIFO cost approximates replacement cost.

Summarized Financial Information of Equity Affiliates

12 Months Ended

Sep. 30, 2016

Equity Method Investments and Joint Ventures Disclosure [Text Block]

8. Summarized Financial Information of Equity Affiliates

The summarized financial information below is on a combined 100% basis and has been compiled based on financial statements of the companies accounted for by the equity method. The amounts presented include the accounts of the following equity affiliates:

Abdullah Hashim Industrial Gases & Equipment Co., Ltd. (25%);		INOX Air Products Limited (50%);
Air Products South Africa (Proprietary) Limited (50%);		Jazan Gas Projects Company (25%);
Bangkok Cogeneration Company Limited (49%);		Kulim Industrial Gases Sdn. Bhd. (50%);
Bangkok Industrial Gases Co., Ltd. (49%);		Sapio Produzione Idrogeno Ossigeno S.r.l. (49%);
Chengdu Air & Gas Products Ltd. (50%);		Tecnologia en Nitrogeno S. de R.L. de C.V. (50%);
Helap S.A. (50%);		Tyczka Industrie-Gases GmbH (50%);
High-Tech Gases (Beijing) Co., Ltd. (50%);		WuXi Hi-Tech Gas Co., Ltd. (50%);
INFRA Group (40%);		and principally, other industrial gas producers.

30 September				2016		2015
Current assets			$	1,449.8	$	1,296.4
Noncurrent assets				3,063.9		2,607.4
Current liabilities				699.2		654.0
Noncurrent liabilities				1,540.6		988.0

Year Ended 30 September		2016		2015		2014
Net sales	$	2,308.5	$	2,604.3	$	2,808.7
Sales less cost of sales		882.6		949.2		984.7
Operating income		487.8		524.0		542.9
Net income		338.0		351.0		359.5

On 19 April 2015, a joint venture between Air Products and ACWA Holding entered into a 20-year oxygen and nitrogen supply agreement to supply Saudi Aramco’s oil refinery and power plant being built in Jazan, Saudi Arabia. Air Products owns 25% of the joint venture and guarantees the repayment of its share of an equity bridge loan. ACWA also guarantees their share of the loan. As of 30 September 2016 and 2015, other noncurrent liabilities included $94.4 and $67.5, respectively, for our obligation to make future equity contributions based on our proportionate share of the advances received by the joint venture under the loan. During 2016 and 2015, we recorded noncash transactions which resulted in an increase of $26.9 and $67.5, respectively, to our investment in net assets of and advances to equity affiliates. These noncash transactions have been excluded from the consolidated statements of cash flows. In total, we expect to invest approximately $100 in this joint venture. We determined that the joint venture is a variable interest entity, for which we are not the primary beneficiary. Air Products has a long-term sale of equipment contract with the joint venture to engineer, procure, and construct the industrial gas facilities that will supply the gases to Saudi Aramco.

In December 2015, we sold our investment in Daido Air Products Electronics, Inc. for $15.9, which resulted in a gain of $.7. The carrying value at time of sale included a $12.8 investment in net assets of and advances to equity affiliates and a $2.4 foreign currency translation loss that had been deferred in accumulated other comprehensive loss.

In January 2016, we sold our investment in SembCorp Air Products (HyCo) Pte. Ltd. The transaction did not have a material impact on the financial statements.

There have been no other significant changes to our investments in equity affiliates during fiscal year 2016.

Dividends received from equity affiliates were $96.8, $51.9, and $75.4 in 2016, 2015, and 2014, respectively.

The investment in net assets of and advances to equity affiliates as of 30 September 2016 and 2015 included investment in foreign affiliates of $1,286.0 and $1,262.8, respectively.

As of 30 September 2016 and 2015, the amount of investment in companies accounted for by the equity method included goodwill in the amount of $109.5 and $112.0, respectively.

Plant and Equipment, net

12 Months Ended

Sep. 30, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

9. PLANT AND EQUIPMENT, NET

The major classes of plant and equipment are as follows:

		Useful Life
30 September		in years		2016		2015
Land			$	232.9	$	226.2
Buildings		30		1,119.8		1,080.2
Production facilities
	Industrial Gases – Regional^(A)	10 to 20		12,372.1		11,873.8
	Materials Technologies	10 to 15		859.2		902.7
	Other	5 to 20		36.0		43.0
	Total production facilities			13,267.3		12,819.5
Distribution and other machinery and equipment^(B)		5 to 25		4,042.1		3,963.1
Construction in progress				1,528.0		1,373.8
Plant and equipment, at cost				20,190.1		19,462.8
Less: accumulated depreciation				11,337.4		10,717.7
Plant and equipment, net			$	8,852.7	$	8,745.1

^(A)	Depreciable lives of production facilities related to long-term customer supply contracts are matched to the contract lives.
^(B)	The depreciable lives for various types of distribution equipment are 10 to 25 years for cylinders, depending on the nature and properties of the
	product; 20 years for tanks; 7.5 years for customer stations; and 5 to 15 years for tractors and trailers.

Depreciation expense was $893.0, $900.4, and $914.8 in 2016, 2015, and 2014, respectively.

Goodwill

12 Months Ended

Sep. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

10. GOODWILL

Changes to the carrying amount of consolidated goodwill by segment are as follows:


	Industrial		Industrial		Industrial		Industrial
	Gases–		Gases–		Gases–		Gases–		Materials
	Americas		EMEA		Asia		Global		Technologies			Total
Goodwill, net at 30 September 2014	$	327.2	$	433.3	$	140.0	$	21.4	$	315.4	$	1,237.3
Acquisitions and adjustments		2.2		3.2		-		-		-		5.4
Currency translation and other		(31.8)		(50.0)		(6.9)		(1.5)		(21.2)		(111.4)
Goodwill, net at 30 September 2015	$	297.6	$	386.5	$	133.1	$	19.9	$	294.2	$	1,131.3
Currency translation and other		11.5		(5.9)		2.1		.3		10.9		18.9
Goodwill, net at 30 September 2016	$	309.1	$	380.6	$	135.2	$	20.2	$	305.1	$	1,150.2



30 September		2016		2015		2014
Goodwill, gross	$	1,408.8	$	1,375.0	$	1,522.1
Accumulated impairment losses ^(A)		(258.6)		(243.7)		(284.8)
Goodwill, net	$	1,150.2	$	1,131.3	$	1,237.3

^(A) Amount is attributable to the Industrial Gases – Americas segment and includes currency translation of $46.6, $61.5, and $20.4
as of 30 September 2016, 2015, and 2014, respectively.

We conduct goodwill impairment testing in the fourth quarter of each fiscal year and whenever events and changes in circumstances indicate that the carrying value of goodwill might not be recoverable. Our goodwill impairment test involves a two-step process. In the first step, we estimate the fair value of each reporting unit and compare it to its carrying value. If the fair value of the reporting unit exceeds its carrying value, goodwill is not impaired and no further testing is required. If the fair value of the reporting unit is less than its carrying value, we perform a second step to determine the amount of goodwill impairment loss, if any. In the second step, the reporting unit’s fair value is allocated to the assets and liabilities of the reporting unit, including any unrecognized intangible assets, in an analysis that calculates the implied fair value of goodwill in the same manner as if the reporting unit were being acquired in a business combination. If the implied fair value of the reporting unit’s goodwill is less than its carrying value, the difference is recorded as a goodwill impairment charge.

In the fourth quarter of 2014, we determined that the fair value of each reporting unit exceeded its carrying value, with the exception of the Latin America reporting unit within the Industrial Gases – Americas segment. The Latin America reporting unit is composed predominately of our Indura business with assets and goodwill associated with operations in Chile and other Latin American countries. In 2014, economic conditions in Latin America, including the impact of tax legislation in Chile, became less favorable due to increasing inflation, a decline in Chilean manufacturing growth, and weaker export demand for many commodities. As a result, our growth projections for this reporting unit were lowered and we determined that the associated goodwill was impaired. A noncash goodwill impairment charge of $305.2 was recorded to write down goodwill to its implied fair value as of 1 July 2014. This impairment is reflected on our consolidated income statements within “Goodwill and intangible assets impairment charge.” As of 30 September 2016, accumulated impairment losses were $258.6, due to the currency impacts since the loss was recorded on 1 July 2014.

During the fourth quarter of 2016, we conducted our annual goodwill impairment test. We determined that the fair value of all our reporting units exceeded their carrying value. There were no indications of impairment.

Intangible Assets

12 Months Ended

Sep. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

11. INTANGIBLE ASSETS

The table below provides details of acquired intangible assets:

	30 September 2016						30 September 2015
				Accumulated						Accumulated
				Amortization/						Amortization/
		Gross		Impairment		Net		Gross		Impairment		Net
Customer relationships	$	517.4	$	(155.2)	$	362.2	$	507.4	$	(129.6)	$	377.8
Patents and technology		76.6		(57.9)		18.7		76.9		(53.3)		23.6
Other		81.7		(37.3)		44.4		81.8		(35.0)		46.8
Total finite-lived intangibles		675.7		(250.4)		425.3		666.1		(217.9)		448.2
Trade names and trademarks, indefinite-lived		66.2		(3.5)		62.7		63.4		(3.3)		60.1
Total Intangible Assets	$	741.9	$	(253.9)	$	488.0	$	729.5	$	(221.2)	$	508.3

The decrease in net intangible assets from 2015 to 2016 is primarily due to amortization. Amortization expense for intangible assets was $32.9, $36.0, and $42.1 in 2016, 2015, and 2014, respectively. Refer to Note 1, Major Accounting Policies, for amortization periods associated with our intangible assets.

In the fourth quarter of 2016, we conducted our annual impairment test of indefinite-lived intangibles and found no indications of impairment.

In the fourth quarter of 2014, we conducted our annual impairment test of indefinite-lived intangibles utilizing the royalty savings method, a form of the income approach. We determined that the carrying value of trade names and trademarks were in excess of their fair value, and as a result, we recorded an impairment charge of $4.9 to reduce these assets to their fair value. This impairment is reflected within “Goodwill and intangible asset impairment charge” on our consolidated income statements. These trade names and trademarks are included in our Industrial Gases – Americas segment.

Projected annual amortization expense for intangible assets as of 30 September 2016 is as follows:

2017	$	31.2
2018		29.5
2019		27.9
2020		27.5
2021		26.1
Thereafter		283.1
Total	$	425.3

Leases

12 Months Ended

Sep. 30, 2016

Leases [Abstract]

Lessee Disclosure [Text Block]

12. Leases

Lessee Accounting

Capital leases, primarily for the right to use machinery and equipment, are included with owned plant and equipment on the consolidated balance sheet in the amount of $22.7 and $12.8 at 30 September 2016 and 2015, respectively. Related amounts of accumulated depreciation are $4.8 and $4.3, respectively.

Operating leases principally relate to real estate and also include aircraft, distribution equipment, and vehicles. Certain leases include escalation clauses, renewal, and/or purchase options. Rent expense is recognized on a straight-line basis over the minimum lease term. Rent expense under operating leases, including month-to-month agreements, was $80.8 in 2016, $88.2 in 2015, and $97.9 in 2014.

At 30 September 2016, minimum payments due under leases are as follows:

		Capital		Operating
		Leases		Leases
2017	$	2.0	$	70.5
2018		1.8		62.5
2019		1.6		49.9
2020		1.6		38.4
2021		2.7		31.6
Thereafter		21.3		102.2
Total	$	31.0	$	355.1

The present value of the above future capital lease payments totaled $10.2. Refer to Note 15, Debt.

In addition to the operating lease payments disclosed above, future minimum payments due under leases related to discontinued operations (i.e., Tees Valley, United Kingdom ) include approximately $2 in each of the next five years and $40 thereafter, for a total lease commitment of approximately $50.

Lessor Disclosure [Text Block]

Lessor Accounting

As discussed under Revenue Recognition in Note 1, Major Accounting Policies, certain contracts associated with facilities that are built to provide product to a specific customer are required to be accounted for as leases. Lease receivables, net, are primarily included in noncurrent capital lease receivables on our consolidated balance sheets, with the remaining balance in other receivables and current assets.

The components of lease receivables were as follows:

30 September		2016		2015
Gross minimum lease payments receivable	$	2,072.6	$	2,322.5
Unearned interest income		(762.7)		(888.1)
Lease Receivables, net	$	1,309.9	$	1,434.4

Lease payments collected in 2016, 2015, and 2014 were $186.0, $148.1, and $134.4, respectively. These payments reduced the lease receivable balance by $85.5, $69.3, and $72.7 in 2016, 2015, and 2014, respectively.

At 30 September 2016, minimum lease payments expected to be collected are as follows:

2017	$	182.7
2018		181.4
2019		175.9
2020		171.1
2021		165.1
Thereafter		1,196.4
Total	$	2,072.6

The entire disclosure for lessor entity's leasing arrangements for operating, capital and leveraged leases.

Financial Instruments

12 Months Ended

Sep. 30, 2016

Financial Instruments [Abstract]

Financial Instruments

13. Financial Instruments

Currency Price Risk Management

Our earnings, cash flows, and financial position are exposed to foreign currency risk from foreign currency denominated transactions and net investments in foreign operations. It is our policy to minimize our cash flow volatility from changes in currency exchange rates. This is accomplished by identifying and evaluating the risk that our cash flows will change in value due to changes in exchange rates and by executing the appropriate strategies necessary to manage such exposures. Our objective is to maintain economically balanced currency risk management strategies that provide adequate downside protection.

Forward Exchange Contracts

We enter into forward exchange contracts to reduce the cash flow exposure to foreign currency fluctuations associated with highly anticipated cash flows and certain firm commitments, such as the purchase of plant and equipment. We also enter into forward exchange contracts to hedge the cash flow exposure on intercompany loans. This portfolio of forward exchange contracts consists primarily of Euros and U.S. dollars. The maximum remaining term of any forward exchange contract currently outstanding and designated as a cash flow hedge at 30 September 2016 is 2.8 years.

Forward exchange contracts are also used to hedge the value of investments in certain foreign subsidiaries and affiliates by creating a liability in a currency in which we have a net equity position. The primary currency pairs in this portfolio of forward exchange contracts are Euros and U.S. dollars and British Pound Sterling and U.S. dollars.

In addition to the forward exchange contracts that are designated as hedges, we utilize forward exchange contracts that are not designated as hedges. These contracts are used to economically hedge foreign currency-denominated monetary assets and liabilities, primarily working capital. The primary objective of these forward exchange contracts is to protect the value of foreign currency-denominated monetary assets and liabilities from the effects of volatility in foreign exchange rates that might occur prior to their receipt or settlement. This portfolio of forward exchange contracts consists of many different foreign currency pairs, with a profile that changes from time to time depending on business activity and sourcing decisions.

The table below summarizes our outstanding currency price risk management instruments:

		30 September 2016			30 September 2015
				Years			Years
			US$	Average		US$	Average
			Notional	Maturity		Notional	Maturity
Forward Exchange Contracts
	Cash flow hedges	$	4,130.3	.5	$	4,543.8	.5
	Net investment hedges		968.2	2.7		491.3	4.0
	Not designated		2,850.5	.4		863.3	.7
Total Forward Exchange Contracts		$	7,949.0	.7	$	5,898.4	.9

The notional value of forward exchange contracts not designated in the table above increased as a result of repayment of certain outstanding intercompany loans prior to their original maturity dates in anticipation of the spin-off of Versum. The forward exchange contracts no longer qualified as cash flow hedges due to the early repayment of the loans. We entered into additional forward exchange contracts to offset these outstanding positions to eliminate any future earnings impact.

In addition to the above, we use foreign currency-denominated debt to hedge the foreign currency exposures of our net investment in certain foreign subsidiaries. The designated foreign currency denominated debt and related accrued interest included €920.7 million ($1,034.4) at 30 September 2016 and €687.7 million ($768.4) at 30 September 2015. The designated foreign currency-denominated debt is located on the balance sheet in the long-term debt and current portion of long-term debt line items.

Debt Portfolio Management

It is our policy to identify on a continuing basis the need for debt capital and evaluate the financial risks inherent in funding the Company with debt capital. Reflecting the result of this ongoing review, the debt portfolio and hedging program are managed with the objectives and intent to (1) reduce funding risk with respect to borrowings made by us to preserve our access to debt capital and provide debt capital as required for funding and liquidity purposes, and (2) manage the aggregate interest rate risk and the debt portfolio in accordance with certain debt management parameters.

Interest Rate Management Contracts

We enter into interest rate swaps to change the fixed/variable interest rate mix of our debt portfolio in order to maintain the percentage of fixed- and variable-rate debt within the parameters set by management. In accordance with these parameters, the agreements are used to manage interest rate risks and costs inherent in our debt portfolio. Our interest rate management portfolio generally consists of fixed-to-floating interest rate swaps (which are designated as fair value hedges), pre-issuance interest rate swaps and treasury locks (which hedge the interest rate risk associated with anticipated fixed-rate debt issuances and are designated as cash flow hedges), and floating-to-fixed interest rate swaps (which are designated as cash flow hedges). At 30 September 2016, the outstanding interest rate swaps were denominated in U.S. dollars. The notional amount of the interest rate swap agreements is equal to or less than the designated debt being hedged. When interest rate swaps are used to hedge variable-rate debt, the indices of the swaps and the debt to which they are designated are the same. It is our policy not to enter into any interest rate management contracts which lever a move in interest rates on a greater than one-to-one basis.

Cross Currency Interest Rate Swap Contracts

We enter into cross currency interest rate swap contracts when our risk management function deems necessary. These contracts may entail both the exchange of fixed- and floating-rate interest payments periodically over the life of the agreement and the exchange of one currency for another currency at inception and at a specified future date. These contracts effectively convert the currency denomination of a debt instrument into another currency in which we have a net equity position while changing the interest rate characteristics of the instrument. The contracts are used to hedge either certain net investments in foreign operations or nonfunctional currency cash flows related to intercompany loans. The current cross currency interest rate swap portfolio consists of fixed-to-fixed swaps primarily between U.S. dollars and offshore Chinese Renminbi, U.S. dollars and Chilean Pesos, and U.S. dollars and British Pound Sterling.

The following table summarizes our outstanding interest rate management contracts and cross currency interest rate swaps:

			30 September 2016					30 September 2015
						Average	Years				Average	Years
			US$			Receive	Average	US$			Receive	Average
			Notional		Pay %	%	Maturity	Notional		Pay %	%	Maturity
	Interest rate swaps (fair value hedge)		$	600.0	LIBOR	2.28%	2.3	$	600.0	LIBOR	2.77%	3.3
	Cross currency interest rate swaps
		(net investment hedge)	$	517.7	3.24%	2.43%	2.6	$	609.9	4.06%	2.61%	3.2
	Cross currency interest rate swaps
		(cash flow hedge)	$	1,088.9	4.77%	2.72%	3.3	$	1,055.2	4.29%	2.63%	3.9
	Cross currency interest rate swaps
		(not designated)	$	27.4	3.62%	.81%	1.8	$	12.9	3.12%	3.08%	4.1

The table below summarizes the fair value and balance sheet location of our outstanding derivatives:

			Balance Sheet		30 September			Balance Sheet		30 September
			Location	2016		2015		Location	2016		2015
	Derivatives Designated as
		Hedging Instruments:

	Forward exchange contracts		Other receivables	$	72.3	$	52.1	Accrued liabilities	$	44.0	$	110.7

	Interest rate management contracts		Other receivables		19.9		17.6	Accrued liabilities		-		-

			Other noncurrent					Other noncurrent
	Forward exchange contracts		assets		44.4		68.5	liabilities		9.1		9.2

			Other noncurrent					Other noncurrent
	Interest rate management contracts		assets		160.0		153.4	liabilities		12.0		.8
	Total Derivatives Designated as
		Hedging Instruments		$	296.6	$	291.6		$	65.1	$	120.7
	Derivatives Not Designated as
		Hedging Instruments:
	Forward exchange contracts		Other receivables	$	78.7	$	3.2	Accrued liabilities	$	30.0	$	3.9


			Other noncurrent					Other noncurrent
	Forward exchange contracts		assets		-		23.3	liabilities		-		.6
			Other noncurrent					Other noncurrent
	Interest rate management contracts		assets		-		.8	liabilities		.7		-
	Total Derivatives Not Designated
		as Hedging Instruments		$	78.7	$	27.3		$	30.7	$	4.5
	Total Derivatives			$	375.3	$	318.9		$	95.8	$	125.2

Refer to Note 14, Fair Value Measurements, which defines fair value, describes the method for measuring fair value, and provides additional disclosures regarding fair value measurements.

The table below summarizes the gain or loss related to our cash flow hedges, fair value hedges, net investment hedges, and derivatives
not designated as hedging instruments:

			Year Ended 30 September
			Forward				Foreign Currency
			Exchange Contracts				Debt				Other ^(A)				Total
			2016		2015		2016		2015		2016		2015		2016		2015
	Cash Flow Hedges, net of tax:
	Net gain (loss) recognized in OCI
		(effective portion)	$	10.5	$	(44.9)	$	-	$	-	$	3.2	$	9.9	$	13.7	$	(35.0)
	Net (gain) loss reclassified from OCI
		to sales/cost of sales (effective portion)		.2		.6		-		-		-		-		.2		.6
	Net (gain) loss reclassified from OCI to other
		income (expense), net (effective portion)		(25.7)		35.6		-		-		(20.3)		(20.2)		(46.0)		15.4
	Net (gain) loss reclassified from OCI
		to interest expense (effective portion)		6.7		.7		-		-		3.3		2.6		10.0		3.3
	Net (gain) loss reclassified from OCI to other
		income (expense), net (ineffective portion)		(.2)		1.5		-		-		-		-		(.2)		1.5
	Fair Value Hedges:
	Net gain (loss) recognized in interest expense^(B)		$	-	$	-	$	-	$	-	$	(8.8)	$	9.9	$	(8.8)	$	9.9
	Net Investment Hedges, net of tax:
	Net gain (loss) recognized in OCI		$	17.4	$	60.1	$	(9.6)	$	91.4	$	35.0	$	49.5	$	42.8	$	201.0
	Derivatives Not Designated as Hedging
	Instruments:
	Net gain (loss) recognized in other income
		(expense), net^(C)	$	(.8)	$	(7.3)	$	-	$	-	$	(1.6)	$	.6	$	(2.4)	$	(6.7)

	^(A) Other includes the impact on other comprehensive income (OCI) and earnings primarily related to interest rate and cross currency
	interest rate swaps.
	^(B) The impact of fair value hedges noted above was largely offset by recognized gains and losses resulting from the impact
	of changes in related interest rates on outstanding debt.
	^(C) The impact of the non-designated hedges noted above was largely offset by recognized gains and losses resulting from
	the impact of changes in exchange rates on assets and liabilities denominated in nonfunctional currencies.

The amount of cash flow hedges’ unrealized gains and losses at 30 September 2016 that are expected to be reclassified to earnings in the next twelve months is not material.

The cash flows related to all derivative contracts are reported in the operating activities section of the consolidated statements of cash flows.

Credit Risk-Related Contingent Features

Certain derivative instruments are executed under agreements that require us to maintain a minimum credit rating with both Standard & Poor’s and Moody’s. If our credit rating falls below this threshold, the counterparty to the derivative instruments has the right to request full collateralization on the derivatives’ net liability position. The net liability position of derivatives with credit risk-related contingent features was $11.2 as of 30 September 2016 and $.2 as of 30 September 2015. Because our current credit rating is above the various pre-established thresholds, no collateral has been posted on these liability positions.

Counterparty Credit Risk Management

We execute financial derivative transactions with counterparties that are highly rated financial institutions, all of which are investment grade at this time. Some of our underlying derivative agreements give us the right to require the institution to post collateral if its credit rating falls below the pre-established thresholds with Standard & Poor’s or Moody’s. The collateral that the counterparties would be required to post was $267.6 as of 30 September 2016 and $226.9 as of 30 September 2015. No financial institution is required to post collateral at this time, as all have credit ratings at or above the threshold.

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

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Fair Value Measurements

12 Months Ended

Sep. 30, 2016

Fair Value Measurements [Abstract]

Fair Value Measurements

14. Fair Value Measurements

Fair value is defined as an exit price, i.e., the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.

The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three broad levels as follows:

Level 1—Quoted prices (unadjusted) in active markets for identical assets or liabilities.

Level 2—Inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the asset or liability.

Level 3—Inputs that are unobservable for the asset or liability based on our own assumptions (about the assumptions market participants would use in pricing the asset or liability).

The methods and assumptions used to measure the fair value of financial instruments are as follows:

Derivatives

The fair value of our interest rate management contracts and forward exchange contracts are quantified using the income approach and are based on estimates using standard pricing models. These models take into account the value of future cash flows as of the balance sheet date, discounted to a present value using discount factors that match both the time to maturity and currency of the underlying instruments. The computation of the fair values of these instruments is generally performed by the Company. These standard pricing models utilize inputs which are derived from or corroborated by observable market data such as interest rate yield curves and currency spot and forward rates. Therefore, the fair value of our derivatives is classified as a level 2 measurement. On an ongoing basis, we randomly test a subset of our valuations against valuations received from the transaction’s counterparty to validate the accuracy of our standard pricing models. Counterparties to these derivative contracts are highly rated financial institutions.

Refer to Note 13, Financial Instruments, for a description of derivative instruments, including details on the balance sheet line classifications.

Long-term Debt

The fair value of our debt is based on estimates using standard pricing models that take into account the value of future cash flows as of the balance sheet date, discounted to a present value using discount factors that match both the time to maturity and currency of the underlying instruments. These standard valuation models utilize observable market data such as interest rate yield curves and currency spot rates. Therefore, the fair value of our debt is classified as a level 2 measurement. We generally perform the computation of the fair value of these instruments.

The carrying values and fair values of financial instruments were as follows:

			30 September 2016				30 September 2015
			Carrying Value		Fair Value		Carrying Value		Fair Value
	Assets
	Derivatives
		Forward exchange contracts	$	195.4	$	195.4	$	147.1	$	147.1
		Interest rate management contracts		179.9		179.9		171.8		171.8
	Liabilities
	Derivatives
		Forward exchange contracts	$	83.1	$	83.1	$	124.4	$	124.4
		Interest rate management contracts		12.7		12.7		.8		.8
	Long-term debt, including current portion			5,289.4		5,467.2		4,384.7		4,645.7

The carrying amounts reported in the balance sheet for cash and cash items, trade receivables, payables and accrued liabilities, accrued income taxes, and short-term borrowings approximate fair value due to the short-term nature of these instruments. Accordingly, these items have been excluded from the above table.

The following table summarizes assets and liabilities measured at fair value on a recurring basis in the consolidated balance sheets:

			30 September 2016								30 September 2015
			Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
	Assets at Fair Value
	Derivatives
		Forward exchange contracts	$	195.4	$	-	$	195.4	$	-	$	147.1	$	-	$	147.1	$	-
		Interest rate management contracts		179.9		-		179.9		-		171.8		-		171.8		-
	Total Assets at Fair Value		$	375.3	$	-	$	375.3	$	-	$	318.9	$	-	$	318.9	$	-
	Liabilities at Fair Value
	Derivatives
		Forward exchange contracts	$	83.1	$	-	$	83.1	$	-	$	124.4	$	-	$	124.4	$	-
		Interest rate management contracts		12.7		-		12.7		-		.8		-		.8		-
	Total Liabilities at Fair Value		$	95.8	$	-	$	95.8	$	-	$	125.2	$	-	$	125.2	$	-

The following is a tabular presentation of nonrecurring fair value measurements along with the level within the fair value hierarchy in
which the fair value measurement in its entirety falls:

	31 March 2016									2016
		Total		Level 1		Level 2		Level 3		Loss
Plant and Equipment—Discontinued operations ^(A)	$	20.0	$	-	$	-	$	20.0	$	913.5


^(A)As a result of our exit from the Energy-from-Waste business, we assessed the recoverability of assets capable of being marketed
on a secondary equipment market using an orderly liquidation valuation resulting in an impairment loss for the difference between
the orderly liquidation value and net book value of the assets as of 31 March 2016. There have been no significant changes in the
estimated net realizable value as of 30 September 2016. For additional information, see Note 4, Discontinued Operations.

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

Debt Disclosure [Text Block]

Debt

12 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

15. Debt

The tables below summarize our outstanding debt at 30 September 2016 and 2015:

Total Debt

30 September		2016		2015
Short-term borrowings	$	935.8	$	1,494.3
Current portion of long-term debt		371.3		435.6
Long-term debt		4,918.1		3,949.1
Total Debt	$	6,225.2	$	5,879.0

Short-term Borrowings

30 September		2016		2015
Bank obligations	$	133.1	$	234.3
Commercial paper		802.7		1,260.0
Total Short-term Borrowings	$	935.8	$	1,494.3

The weighted average interest rate of short-term borrowings outstanding at 30 September 2016 and 2015 was 1.1% and .8%, respectively.

Cash paid for interest, net of amounts capitalized, was $121.1 in 2016, $97.5 in 2015, and $132.4 in 2014.

Long-term Debt
30 September		Fiscal Year Maturities		2016		2015
Payable in U.S. Dollars
	Debentures
	8.75%	2021	$	18.4	$	18.4
	Medium-term Notes (weighted average rate)
	Series D 7.3%	2016		-		32.1
	Series E 7.6%	2026		17.2		17.2
	Senior Notes
	Note 2.0%	2016		-		350.0
	Note 1.2%	2018		400.0		400.0
	Note 4.375%	2019		400.0		400.0
	Note 3.0%	2022		400.0		400.0
	Note 2.75%	2023		400.0		400.0
	Note 3.35%	2024		400.0		400.0
	Versum Financing
	Senior Note 5.5%	2024		425.0		-
	Term Loan B 3.346%	2023		575.0		-
	Other (weighted average rate)
	Variable-rate industrial revenue bonds .68%	2035 to 2050		769.9		769.9
	Other 1.3%	2018 to 2019		25.7		35.0
Payable in Other Currencies
	Eurobonds 4.625%	2017		337.0		335.2
	Eurobonds 2.0%	2020		337.0		335.2
	Eurobonds 1.0%	2025		337.0		335.2
	Eurobonds .375%	2021		393.2		-
	Other 4.4%	2016 to 2022		53.0		161.0
Capital Lease Obligations
	United States 5.0%	2018		.5		.7
	Foreign 11.3%	2017 to 2036		9.7		1.1
Less: Unamortized Discount				(9.2)		(6.3)
Total Long-term Debt				5,289.4		4,384.7
Less: Current portion of long-term debt				(371.3)		(435.6)
Long-term Debt			$	4,918.1	$	3,949.1

Maturities of long-term debt in each of the next five years and beyond are as follows:

2017	$	371.3
2018		419.4
2019		406.6
2020		353.4
2021		416.9
Thereafter		3,321.8
Total	$	5,289.4

Various debt agreements to which we are a party also include financial covenants and other restrictions, including restrictions pertaining to the ability to create property liens and enter into certain sale and leaseback transactions. As of 30 September 2016, we are in compliance with all the financial and other covenants under our debt agreements.

We have entered into a five-year revolving credit agreement maturing 30 April 2018 with a syndicate of banks (the “2013 Credit Agreement”), under which senior unsecured debt is available to both the Company and certain of its subsidiaries. There have been subsequent amendments to the 2013 Credit Agreement, and as of 30 September 2016, the maximum borrowing capacity was $2,690.0. The 2013 Credit Agreement provides a source of liquidity for the Company and supports its commercial paper program. The Company’s only financial covenant is a maximum ratio of total debt to total capitalization no greater than 70%. No borrowings were outstanding under the 2013 Credit Agreement as of 30 September 2016.

On 1 June 2016, we issued a .375% Eurobond for €350 million ($386.9) that matures on 1 June 2021. The proceeds were used to repay a 2.0% Senior Note of $350.0 that matured on 2 August 2016.

In September 2015, we made a payment of $146.6 to redeem 3,000,000 Unidades de Fomento (“UF”) Series E 6.30% Bonds due 22 January 2030 that had a carrying value of $130.0 and resulted in a net loss of $16.6 ($14.2 after-tax, or $.07 per share). The loss is reflected on the consolidated income statements as “Loss on extinguishment of debt.”

Additional commitments totaling $51.3 are maintained by our foreign subsidiaries, all of which was borrowed and outstanding at 30 September 2016.

Versum Financing

On 30 September 2016, in connection with the spin-off, Versum entered into certain financing transactions. Versum continued to maintain the financing, further described below, subsequent to the spin-off which occurred on 1 October 2016. Refer to Note 3, Materials Technologies Separation, for additional information on the spin-off.

Versum issued $425.0 aggregate principal amount of senior unsecured notes (the “Notes”). The Notes bear interest at a fixed interest rate of 5.50% per annum and will mature on September 30, 2024. In addition, Versum entered into a credit agreement providing for (i) a senior secured first lien term loan B facility in an aggregate principal amount of $575.0 (the “Term Facility”) and (ii) a senior secured first lien revolving credit facility in an aggregate principal amount of $200.0 (the “Revolving Facility”). Borrowings under the Term Facility bear interest at a rate per annum of, at Versum’s option, LIBOR, subject to a minimum floor of 0.75%, plus a margin of 2.50% or an alternate base rate, subject to a minimum floor of 1.75%, plus a margin of 1.50%. Borrowings under the Revolving Facility bear interest initially at a rate per annum of, at Versum’s option, LIBOR plus a margin of 2.00% or an alternate base rate plus a margin of 1.00%. The Term Facility amortizes in equal quarterly installments in aggregate annual amounts equal to 1.00% of the original principal amount of the Term Facility, with the balance payable on 30 September 2023. The Revolving Facility matures on 30 September 2021. Lenders under the Revolving Facility have a maximum first lien net leverage ratio covenant (total debt net of cash on hand to total adjusted EBITDA) of 3.25:1.00 and certain other customary covenants. On 30 September 2016, the Term Facility was fully drawn and no borrowings were outstanding under the Revolving Facility.

Retirement Benefits

12 Months Ended

Sep. 30, 2016

Retirement Benefits [Abstract]

Retirement Benefits

16. RETIREMENT BENEFITS

The Company and certain of its subsidiaries sponsor defined benefit pension plans and defined contribution plans that cover a substantial portion of its worldwide employees. The principal defined benefit pension plans are the U.S. salaried pension plan and the U.K. pension plan. These plans were closed to new participants in 2005 and were replaced with defined contribution plans. The principal defined contribution plan is the Retirement Savings Plan, in which a substantial portion of the U.S. employees participate; a similar plan is offered to U.K. employees. We also provide other postretirement benefits consisting primarily of healthcare benefits to U.S. retirees who meet age and service requirements.

Defined Benefit Pension Plans

Pension benefits earned are generally based on years of service and compensation during active employment. The cost of our defined benefit pension plans included the following components:

		2016				2015				2014
			U.S.	International			U.S.	International			U.S.	International
Service cost		$	36.5	$	24.3	$	42.2	$	31.3	$	42.6	$	36.0
Interest cost			110.7		44.3		124.7		57.8		130.7		67.2
Expected return on plan assets			(202.0)		(78.3)		(202.0)		(79.8)		(187.8)		(78.1)
Amortization
	Net actuarial loss		85.3		35.6		78.9		41.4		78.3		36.1
	Prior service cost		2.8		(.2)		2.8		-		2.9		.2
Settlements			5.1		1.3		18.9		2.3		4.8		.7
Curtailments			-		(1.1)		5.3		-		-		-
Special termination benefits			2.0		-		7.2		1.5		.2		.1
Other			(.3)		2.1		1.0		2.1		-		2.0
Net Periodic Benefit Cost		$	40.1	$	28.0	$	79.0	$	56.6	$	71.7	$	64.2

Net periodic benefit cost is primarily included in cost of sales, selling and administrative expense, and pension settlement loss on our consolidated income statements. The amount of net periodic benefit cost capitalized in 2016, 2015, and 2014 was not material.

Certain of our pension plans provide for a lump sum benefit payment option at the time of retirement, or for corporate officers, six months after their retirement date. A participant’s vested benefit is considered settled upon cash payment of the lump sum. We recognize pension settlement losses when cash payments exceed the sum of the service and interest cost components of net periodic benefit cost of the plan for the fiscal year. In 2016, 2015, and 2014, we recognized $6.4, $21.2 and $5.5 of settlement losses, respectively, to accelerate recognition of a portion of actuarial losses deferred in accumulated other comprehensive loss primarily associated with the U.S. Supplementary Pension Plan. Special termination benefits for 2016, 2015, and 2014 are primarily related to the business restructuring and cost reduction actions initiated in their respective years. In addition, curtailment gains of $1.1 and curtailment losses of $5.3 are also reflected in the business restructuring and cost reduction actions charge in 2016 and 2015, respectively.

We calculate net periodic benefit cost for a given fiscal year based on assumptions developed at the end of the previous fiscal year. The following table sets forth the weighted average assumptions used in the calculation of net periodic benefit cost:

	2016				2015				2014
	U.S.		International		U.S.		International		U.S.		International
Discount rate^(A)	4.3	%	3.3	%	4.3	%	3.6	%	4.8	%	4.3	%
Expected return on plan assets	8.0	%	6.3	%	8.3	%	6.1	%	8.3	%	6.5	%
Rate of compensation increase	3.5	%	3.5	%	3.5	%	3.6	%	4.0	%	3.7	%

^(A)Effective in 2016, the Company began to measure the service cost and interest cost components of pension expense by applying spot rates along the yield curve to the relevant projected cash flows, as we believe this provides a better measurement of these costs. The 2016 discount rates used to measure the service cost and interest cost of our U.S. pension plans were 4.5% and 4.1%, respectively. The rates used to measure the service cost and interest cost of our major International pension plans were 3.4% and 3.2%, respectively. The previous method would have used a single discount rate for both service and interest costs. The Company has accounted for this as a change in accounting estimate and, accordingly has accounted for it on a prospective basis. This change does not affect the measurement of the total benefit obligation.

The projected benefit obligation (PBO) is the actuarial present value of benefits attributable to employee service rendered to date, including the effects of estimated future salary increases. The following table sets forth the weighted average assumptions used in the calculation of the PBO:

	2016				2015
	U.S.		International		U.S.		International
Discount rate	3.5	%	2.0	%	4.4	%	3.4	%
Rate of compensation increase	3.5	%	3.5	%	3.5	%	3.5	%

The following table reflects the change in the PBO and the change in the fair value of plan assets based on the plan year
measurement date, as well as the amounts recognized in the consolidated balance sheets:

	2016				2015
		U.S.	International			U.S.	International
Change in Projected Benefit Obligation
Obligation at beginning of year	$	3,139.9	$	1,647.9	$	3,002.9	$	1,735.7
Service cost		36.5		24.3		42.2		31.3
Interest cost		110.7		44.3		124.7		57.8
Amendments		1.2		-		1.2		(3.1)
Actuarial loss		380.2		376.4		130.4		30.0
Curtailments		(.4)		(1.2)		5.3		(5.1)
Settlement (gain) loss		5.4		(3.4)		6.7		(8.6)
Special termination benefits		2.0		-		7.2		1.5
Participant contributions		-		1.6		-		2.1
Benefits paid		(197.4)		(46.6)		(181.8)		(50.3)
Currency translation/other		(.4)		(193.7)		1.1		(143.4)
Obligation at End of Year	$	3,477.7	$	1,849.6	$	3,139.9	$	1,647.9

Change in Plan Assets
Fair value at beginning of year	$	2,613.6	$	1,302.8	$	2,746.2	$	1,368.4
Actual return on plan assets		275.2		273.2		(14.0)		25.9
Company contributions		13.9		65.4		63.1		74.4
Participant contributions		-		1.6		-		2.1
Benefits paid		(197.4)		(46.6)		(181.8)		(50.3)
Settlements		-		(3.4)		-		(8.6)
Currency translation/other		-		(181.9)		.1		(109.1)
Fair Value at End of Year	$	2,705.3	$	1,411.1	$	2,613.6	$	1,302.8
Funded Status at End of Year	$	(772.4)	$	(438.5)	$	(526.3)	$	(345.1)

Amounts Recognized
Noncurrent assets	$	-	$	-	$	4.0	$	.3
Accrued liabilities		(24.1)		-		(15.7)		-
Noncurrent liabilities		(748.3)		(438.5)		(514.6)		(345.4)
Net Amount Recognized	$	(772.4)	$	(438.5)	$	(526.3)	$	(345.1)

Certain U.S. plans offered terminated vested participants an election to receive their accrued pension benefit as a one-time lump sum payment in 2016. Benefits paid in 2016 include $52.9 of lump sum cash payments in connection with this offering.

The changes in plan assets and benefit obligation that have been recognized in other comprehensive income on a pretax basis
during 2016 and 2015 consist of the following:

	2016				2015
		U.S.	International			U.S.	International
Net actuarial loss arising during the period	$	311.8	$	172.1	$	351.8	$	79.4
Amortization of net actuarial loss		(90.4)		(36.5)		(97.8)		(43.3)
Prior service cost (credit) arising during the period		1.2		(.1)		1.2		(3.1)
Amortization of prior service cost		(2.8)		.2		(2.8)		-
Total	$	219.8	$	135.7	$	252.4	$	33.0

The net actuarial loss represents the actual changes in the estimated obligation and plan assets that have not yet been recognized in the consolidated income statements and are included in accumulated other comprehensive loss. Actuarial losses arising during 2016 are primarily attributable to lower discount rates, partially offset by a higher than expected return on plan assets. Accumulated actuarial gains and losses that exceed a corridor are amortized over the average remaining service period of participants, which was approximately 10 years as of 30 September 2016.

The components recognized in accumulated other comprehensive loss on a pretax basis at 30 September consisted of:

	2016				2015
		U.S.	International			U.S.	International
Net actuarial loss	$	1,273.6	$	769.6	$	1,052.2	$	634.0
Prior service cost		8.5		(1.9)		10.1		(2.0)
Net transition liability		-		.4		-		.4
Total	$	1,282.1	$	768.1	$	1,062.3	$	632.4

The amount of accumulated other comprehensive loss at 30 September 2016 that is expected to be recognized as a component of
net periodic pension cost during fiscal year 2017, excluding amounts that may be recognized through settlement losses, is as follows:

		U.S.	International
Net actuarial loss	$	103.0	$	58.3
Prior service cost		2.8		(.2)

The accumulated benefit obligation (ABO) is the actuarial present value of benefits attributed to employee service rendered to a particular date, based on current salaries. The ABO for all defined benefit pension plans was $4,954.9 and $4,444.8 as of 30 September 2016 and 2015, respectively.

The following table provides information on pension plans where the benefit liability exceeds the value of plan assets:

	30 September 2016				30 September 2015
	U.S.		International		U.S.		International
Pension Plans with PBO in Excess of Plan Assets:
PBO	$	3,477.7	$	1,849.6	$	2,917.1	$	1,644.5
Fair value of plan assets		2,705.3		1,411.1		2,386.7		1,299.1
Pension Plans with ABO in Excess of Plan Assets:
ABO	$	3,242.5	$	1,673.6	$	2,689.2	$	1,498.0
Fair value of plan assets		2,705.3		1,370.1		2,386.7		1,263.2

Included in the tables above are several pension arrangements that are not funded because of jurisdictional practice. The ABO and PBO related to these plans for 2016 were $108.0 and $115.3, respectively.

Pension Plan Assets

Our pension plan investment strategy is to invest in diversified portfolios to earn a long-term return consistent with acceptable risk in order to pay retirement benefits and meet regulatory funding requirements while minimizing company cash contributions over time. The plans invest primarily in passive and actively managed equity and debt securities. Equity investments are diversified geographically and by investment style and market capitalization. Fixed income investments include sovereign, corporate and asset-backed securities generally denominated in the currency of the plan.

Asset allocation targets are established based on the long-term return, volatility and correlation characteristics of the asset classes, the profiles of the plans’ liabilities, and acceptable levels of risk. Actual allocations vary from target due to market changes and are reviewed regularly. Assets are routinely rebalanced through contributions, benefit payments, and otherwise as deemed appropriate. The actual and target allocations at the measurement date are as follows:

	2016 Target Allocation		2016 Actual Allocation		2015 Actual Allocation
	U.S.	International	U.S.	International	U.S.	International
Asset Category
Equity securities	60–80%	55–67%	65%	60%	68%	59%
Debt securities	20–30%	32–43%	28%	38%	25%	40%
Real estate/other	0–10%	0–2%	7%	1%	7%	0%
Cash	—	—	0%	1%	0%	1%
Total			100%	100%	100%	100%

The 8.0% expected return for U.S. plan assets is based on a weighted average of estimated long-term returns of major asset classes and the historical performance of plan assets. The estimated long-term return for equity, debt securities, and real estate is 8.3%, 5.1%, and 6.9%, respectively. In determining asset class returns, we take into account historical long-term returns and the value of active management, as well as other economic and market factors.

The 6.3% expected rate of return for international plan assets is based on a weighted average return for plans outside the U.S., which vary significantly in size, asset structure and expected returns. The expected asset return for the U.K. plan, which represents over 80% of the assets of our International plans, is 6.6% and was derived from expected equity and debt security returns of 7.3% and 3.5%, respectively.

The following table summarizes pension plan assets measured at fair value by asset class (see Note 14, Fair Value Measurements,
for definition of the levels):

			30 September 2016								30 September 2015
				Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
U.S. Qualified Pension
	Plans
Cash and cash equivalents			$	12.7	$	12.7	$	-	$	-	$	11.1	$	11.1	$	-	$	-
Equity securities				637.0		637.0		-		-		681.7		681.7		-		-
Equity mutual funds				300.2		300.2		-		-		480.1		480.1		-		-
Equity pooled funds				815.5		-		815.5		-		615.1		-		615.1		-
Fixed income:
	Bonds (government and
		corporate)		747.8		-		747.8		-		651.4		-		651.4		-
Real estate pooled funds				192.1		-		-		192.1		174.2		-		-		174.2
Total U.S. Qualified
	Pension Plans		$	2,705.3	$	949.9	$	1,563.3	$	192.1	$	2,613.6	$	1,172.9	$	1,266.5	$	174.2

International Pension
	Plans
Cash and cash equivalents			$	6.6	$	6.6	$	-	$	-	$	10.1	$	10.1	$	-	$	-
Equity pooled funds				854.8		-		854.8		-		766.9		-		766.9		-
Fixed income pooled funds				486.9		-		486.9		-		465.6		-		465.6		-
Other pooled funds				17.0		-		9.7		7.3		14.9		-		8.3		6.6
Insurance contracts				45.8		-		-		45.8		45.3		-		-		45.3
Total International
	Pension Plans		$	1,411.1	$	6.6	$	1,351.4	$	53.1	$	1,302.8	$	10.1	$	1,240.8	$	51.9

The following table summarizes changes in fair value of the pension plan assets classified as Level 3, by asset class:

		Real Estate		Other		Insurance
		Pooled Funds		Pooled Funds		Contracts		Total
30 September 2014		$	150.2	$	9.3	$	59.7	$	219.2
Actual return on plan assets:
	Assets held at end of year		24.0		(.2)		(11.1)		12.7
	Assets sold during the period		-		.5		-		.5
Purchases, sales, and settlements, net			-		(3.0)		(3.3)		(6.3)
30 September 2015		$	174.2	$	6.6	$	45.3	$	226.1
Actual return on plan assets:
	Assets held at end of year		17.9		.1		3.2		21.2
	Assets sold during the period		-		.3		-		.3
Purchases, sales, and settlements, net			-		.3		(2.7)		(2.4)
30 September 2016		$	192.1	$	7.3	$	45.8	$	245.2

The descriptions and fair value methodologies for the U.S. and International pension plan assets are as follows:

Cash and Cash Equivalents

The carrying amounts of cash and cash equivalents approximate fair value due to the short-term maturity.

Equity Securities

Equity securities are valued at the closing market price reported on a U.S. or international exchange where the security is actively traded and are therefore classified as Level 1 assets.

Mutual and Pooled Funds

Shares of mutual funds are valued at the net asset value (NAV) of the fund and are classified as Level 1 assets. Units of pooled funds are valued at the per unit NAV determined by the fund manager and are classified as Level 2 assets. The investments are utilizing NAV as a practical expedient for fair value.

Corporate and Government Bonds

Corporate and government bonds are classified as Level 2 assets, as they are either valued at quoted market prices from observable pricing sources at the reporting date or valued based upon comparable securities with similar yields and credit ratings.

Real Estate Pooled Funds

Real estate pooled funds are classified as Level 3 assets, as they are carried at the estimated fair value of the underlying properties. Estimated fair value is calculated utilizing a combination of key inputs, such as revenue and expense growth rates, terminal capitalization rates, and discount rates. These key inputs are consistent with practices prevailing within the real estate investment management industry.

Other Pooled Funds

Other pooled funds classified as Level 2 assets are valued at the NAV of the shares held at year end, which is based on the fair value of the underlying investments. Securities and interests classified as Level 3 are carried at the estimated fair value. The estimated fair value is based on the fair value of the underlying investment values, which includes estimated bids from brokers or other third-party vendor sources that utilize expected cash flow streams and other uncorroborated data including counterparty credit quality, default risk, discount rates, and the overall capital market liquidity.

Insurance Contracts

Insurance contracts are classified as Level 3 assets, as they are carried at contract value, which approximates the estimated fair value. The estimated fair value is based on the fair value of the underlying investment of the insurance company.

Contributions and Projected Benefit Payments

Pension contributions to funded plans and benefit payments for unfunded plans for fiscal year 2016 were $79.3. Contributions for funded plans resulted primarily from contractual and regulatory requirements. Benefit payments to unfunded plans were due primarily to the timing of retirements and cost reduction actions. We anticipate contributing $65 to $85 to the defined benefit pension plans in 2017. These contributions are anticipated to be driven primarily by contractual and regulatory requirements for funded plans and benefit payments for unfunded plans, which are dependent upon timing of retirements and actions to reorganize the business.

Projected benefit payments, which reflect expected future service, are as follows:

	U.S.		International
2017	$	150.3	$	45.7
2018		152.7		48.3
2019		157.2		50.2
2020		161.8		51.1
2021		166.7		54.3
2022–2026		909.6		306.9

These estimated benefit payments are based on assumptions about future events. Actual benefit payments may vary significantly from these estimates.

Defined Contribution Plans

We maintain a nonleveraged employee stock ownership plan (ESOP) which forms part of the Air Products and Chemicals, Inc. Retirement Savings Plan (RSP). The ESOP was established in May of 2002. The balance of the RSP is a qualified defined contribution plan including a 401(k) elective deferral component. A substantial portion of U.S. employees are eligible and participate.

We treat dividends paid on ESOP shares as ordinary dividends. Under existing tax law, we may deduct dividends which are paid with respect to shares held by the plan. Shares of the Company’s common stock in the ESOP totaled 3,031,534 as of 30 September 2016.

Our contributions to the RSP include a Company core contribution for certain eligible employees who do not receive their primary retirement benefit from the defined benefit pension plans, with the core contribution based on a percentage of pay that is dependent on years of service. For the RSP, we also make matching contributions on overall employee contributions as a percentage of the employee contribution and include an enhanced contribution for certain eligible employees that do not participate in the defined benefit pension plans. Worldwide contributions expensed to income in 2016, 2015, and 2014 were $43.2, $44.2, and $45.2, respectively.

Other Postretirement Benefits

We provide other postretirement benefits consisting primarily of healthcare benefits to certain U.S. retirees who meet age and service requirements. The healthcare benefit is a continued medical benefit until the retiree reaches age 65. Healthcare benefits are contributory, with contributions adjusted periodically. The retiree medical costs are capped at a specified dollar amount, with the retiree contributing the remainder.

The cost of our other postretirement benefit plans includes the following components:

		2016		2015		2014
Service cost	$	2.2	$	2.8	$	3.3
Interest cost		2.0		2.2		2.3
Amortization of net actuarial loss		.7		.8		1.7
Net Periodic Postretirement Cost	$	4.9	$	5.8	$	7.3

We calculate net periodic postretirement cost for a given fiscal year based on assumptions developed at the end of the previous fiscal year. The discount rate assumption used in the calculation of net periodic postretirement cost for 2016, 2015, and 2014 was 2.4%, 2.6%, and 2.4%, respectively.

We measure the other postretirement benefits as of 30 September. The discount rate assumption used in the calculation of the accumulated postretirement benefit obligation was 1.9% and 2.4% for 2016 and 2015, respectively.

The following table reflects the change in the accumulated postretirement benefit obligation and the amounts recognized in the
consolidated balance sheets:

		2016		2015
Obligation at beginning of year	$	86.9	$	93.5
Service cost		2.2		2.8
Interest cost		2.0		2.2
Actuarial loss (gain)		7.5		(2.3)
Benefits paid		(12.3)		(9.3)
Obligation at End of Year	$	86.3	$	86.9

Amounts Recognized
Accrued liabilities	$	11.4	$	10.4
Noncurrent liabilities		74.9		76.5

The changes in benefit obligation that have been recognized in other comprehensive income on a pretax basis during 2016 and 2015
for our other postretirement benefit plans consist of the following:

		2016		2015
Net actuarial loss (gain) arising during the period	$	7.5	$	(2.3)
Amortization of net actuarial loss		(.7)		(.8)
Total	$	6.8	$	(3.1)

The net actuarial loss recognized in accumulated other comprehensive loss on a pretax basis was $18.7 at 30 September 2016 and $11.9 at 30 September 2015. Of the 30 September 2016 net actuarial loss, it is estimated that $2.3 will be amortized into net periodic postretirement cost during fiscal year 2017.

The effect of a change in the healthcare trend rate is tempered by a cap on the average retiree medical cost. The expected per capita claims costs are currently assumed to be greater than the annual cap, therefore the assumed healthcare cost trend rate, ultimate trend rate, and the year the ultimate trend rate is reached in 2016 does not apply as it has no impact on plan obligations. For 2015, the healthcare trend rate was 7%, the ultimate trend rate was 5%, and the year the ultimate trend rate is reached was 2019.

Projected benefit payments are as follows:

2017	$	11.5
2018		11.0
2019		10.7
2020		10.2
2021		9.7
2022–2026		35.3

These estimated benefit payments are based on assumptions about future events. Actual benefit payments may vary significantly from these estimates.

Commitments and Contingencies

12 Months Ended

Sep. 30, 2016

Commitments And Contingencies [Abstract]

Commitments and Contingencies

17. Commitments and Contingencies

LITIGATION

We are involved in various legal proceedings, including commercial, competition, environmental, health, safety, product liability, and insurance matters. In September 2010, the Brazilian Administrative Council for Economic Defense (CADE) issued a decision against our Brazilian subsidiary, Air Products Brasil Ltda., and several other Brazilian industrial gas companies for alleged anticompetitive activities. CADE imposed a civil fine of R$179.2 million (approximately $55 at 30 September 2016) on Air Products Brasil Ltda. This fine was based on a recommendation by a unit of the Brazilian Ministry of Justice, whose investigation began in 2003, alleging violation of competition laws with respect to the sale of industrial and medical gases. The fines are based on a percentage of our total revenue in Brazil in 2003.

We have denied the allegations made by the authorities and filed an appeal in October 2010 with the Brazilian courts. On 6 May 2014, our appeal was granted and the fine against Air Products Brasil Ltda. was dismissed. CADE has appealed that ruling and the matter remains pending. We, with advice of our outside legal counsel, have assessed the status of this matter and have concluded that, although an adverse final judgment after exhausting all appeals is possible, such a judgment is not probable. As a result, no provision has been made in the consolidated financial statements. We estimate the maximum possible loss to be the full amount of the fine of R$179.2 million (approximately $55 at 30 September 2016) plus interest accrued thereon until final disposition of the proceedings.

Other than this matter, we do not currently believe there are any legal proceedings, individually or in the aggregate, that are reasonably possible to have a material impact on our financial condition, results of operations, or cash flows.

ENVIRONMENTAL

In the normal course of business, we are involved in legal proceedings under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA: the federal Superfund law); Resource Conservation and Recovery Act (RCRA); and similar state and foreign environmental laws relating to the designation of certain sites for investigation or remediation. Presently, there are approximately 33 sites on which a final settlement has not been reached where we, along with others, have been designated a potentially responsible party by the Environmental Protection Agency or are otherwise engaged in investigation or remediation, including cleanup activity at certain of our current and former manufacturing sites. We continually monitor these sites for which we have environmental exposure.

Accruals for environmental loss contingencies are recorded when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. The consolidated balance sheets at 30 September 2016 and 2015 included an accrual of $81.4 and $80.6, respectively, primarily as part of other noncurrent liabilities. The environmental liabilities will be paid over a period of up to 30 years. We estimate the exposure for environmental loss contingencies to range from $81 to a reasonably possible upper exposure of $95 as of 30 September 2016.

Actual costs to be incurred at identified sites in future periods may vary from the estimates, given inherent uncertainties in evaluating environmental exposures. Using reasonably possible alternative assumptions of the exposure level could result in an increase to the environmental accrual. Due to the inherent uncertainties related to environmental exposures, a significant increase to the reasonably possible upper exposure level could occur if a new site is designated, the scope of remediation is increased, a different remediation alternative is identified, or a significant increase in our proportionate share occurs. We do not expect that any sum we may have to pay in connection with environmental matters in excess of the amounts recorded or disclosed above would have a material adverse impact on our financial position or results of operations in any one year.

Pace

At 30 September 2016, $30.1 of the environmental accrual was related to the Pace facility.

In 2006, we sold our Amines business, which included operations at Pace, Florida, and recognized a liability for retained environmental obligations associated with remediation activities at Pace. We are required by the Florida Department of Environmental Protection (FDEP) and the United States Environmental Protection Agency (USEPA) to continue our remediation efforts. We estimated that it would take 20 years to complete the groundwater remediation, and the costs through completion were estimated to range from $42 to $52. As no amount within the range was a better estimate than another, we recognized a pretax expense in fiscal 2006 of $42 as a component of income from discontinued operations and recorded an environmental accrual of $42 in continuing operations on the consolidated balance sheets. There has been no change to the estimated exposure range related to the Pace facility.

We have implemented many of the remedial corrective measures at the Pace facility required under 1995 Consent Orders issued by the FDEP and the USEPA. Contaminated soils have been bioremediated, and the treated soils have been secured in a lined on-site disposal cell. Several groundwater recovery systems have been installed to contain and remove contamination from groundwater. We completed an extensive assessment of the site to determine how well existing measures are working, what additional corrective measures may be needed, and whether newer remediation technologies that were not available in the 1990s might be suitable to more quickly and effectively remove groundwater contaminants. Based on assessment results, we completed a focused feasibility study that has identified alternative approaches that may more effectively remove contaminants. We continue to review alternative remedial approaches with the FDEP. In the first quarter of 2015, we entered into a new Consent Order with the FDEP requiring us to continue our remediation efforts at the Pace facility. The costs we are incurring under the new Consent Order are expected to be consistent with our previous estimates.

Piedmont

At 30 September 2016, $17.5 of the environmental accrual was related to the Piedmont site.

On 30 June 2008, we sold our Elkton, Maryland, and Piedmont, South Carolina, production facilities and the related North American atmospheric emulsions and global pressure sensitive adhesives businesses. In connection with the sale, we recognized a liability for retained environmental obligations associated with remediation activities at the Piedmont site. This site is under active remediation for contamination caused by an insolvent prior owner. We are required by the South Carolina Department of Health and Environmental Control to address both contaminated soil and groundwater. Numerous areas of soil contamination have been addressed, and contaminated groundwater is being recovered and treated. We estimate that it will take until 2019 to complete source area remediation with groundwater recovery and treatment, continuing through 2029. Thereafter, we are expecting this site to go into a state of monitored natural attenuation through 2047. We recognized a pretax expense in 2008 of $24 as a component of income from discontinued operations and recorded an environmental liability of $24 in continuing operations on the consolidated balance sheets. There have been no significant changes to the estimated exposure.

Pasadena

At 30 September 2016, $10.4 of the environmental accrual was related to the Pasadena site.

During the fourth quarter of 2012, management committed to permanently shutting down our polyurethane intermediates (PUI) production facility in Pasadena, Texas. In shutting down and dismantling the facility, we have undertaken certain obligations related to soil and groundwater contaminants. We have been pumping and treating groundwater to control off-site contaminant migration in compliance with regulatory requirements and under the approval of the Texas Commission on Environmental Quality (TCEQ). We estimate that the pump and treat system will continue to operate until 2042. We plan to perform additional work to address other environmental obligations at the site. This additional work includes remediating, as required, impacted soils, investigating groundwater west of the former PUI facility, performing post closure care for two closed RCRA surface impoundment units, and establishing engineering controls. In 2012, we estimated the total exposure at this site to be $13. There has been no change to the estimated exposure.

ASSET RETIREMENT OBLIGATIONS

Our asset retirement obligations are primarily associated with Industrial Gases on-site long-term supply contracts, under which we have built a facility on land owned by the customer and are obligated to remove the facility at the end of the contract term. The retirement of assets includes the contractually required removal of a long-lived asset from service, and encompasses the sale, removal, abandonment, recycling, or disposal of the assets as required at the end of the contract terms. The timing and/or method of settlement of these obligations are conditional on a future event that may or may not be within our control.

Changes to the carrying amount of our asset retirement obligations are as follows:

Balance at 30 September 2014	$	94.0
Additional accruals		17.6
Liabilities settled		(3.6)
Accretion expense		4.7
Currency translation adjustment		(3.3)
Balance at 30 September 2015	$	109.4
Additional accruals		10.4
Liabilities settled		(4.4)
Accretion expense		5.4
Currency translation adjustment		(.9)
Balance at 30 September 2016	$	119.9

These obligations are primarily reflected in other noncurrent liabilities on the consolidated balance sheets.

GUARANTEES AND WARRANTIES

In April 2015, we entered into joint venture arrangements in Saudi Arabia. An equity bridge loan has been provided to the joint venture until 2020 to fund equity commitments, and we guaranteed the repayment of our 25% share of this loan. Our venture partner guaranteed repayment of their share. Our maximum exposure under the guarantee is approximately $100. As of 30 September 2016, we recorded a noncurrent liability of $94.4 for our obligation to make future equity contributions based on the equity bridge loan.

Air Products has also entered into a sale of equipment contract with the joint venture to engineer, procure, and construct the industrial gas facilities that will supply gases to Saudi Aramco. We have provided bank guarantees to the joint venture of up to $311 to support our performance under the contract. Exposures under the guarantees decline over time and will be completely extinguished after completion of the project.

We are party to an equity support agreement and operations guarantee related to an air separation facility constructed in Trinidad for a venture in which we own 50%. At 30 September 2016, maximum potential payments under joint and several guarantees were $29.0. Exposures under the guarantees decline over time and will be completely extinguished by 2024.

During the first quarter of 2014, we sold the remaining portion of our Homecare business and entered into an operations guarantee related to obligations under certain homecare contracts assigned in connection with the transaction. Our maximum potential payment under the guarantee is £20 million (approximately $25 at 30 September 2016), and our exposure will be extinguished by 2020.

To date, no equity contributions or payments have been made since the inception of these guarantees. The fair value of the above guarantees is not material.

We, in the normal course of business operations, have issued product warranties related to equipment sales. Also, contracts often contain standard terms and conditions which typically include a warranty and indemnification to the buyer that the goods and services purchased do not infringe on third-party intellectual property rights. The provision for estimated future costs relating to warranties is not material to the consolidated financial statements.

We do not expect that any sum we may have to pay in connection with guarantees and warranties will have a material adverse effect on our consolidated financial condition, liquidity, or results of operations.

UNCONDITIONAL PURCHASE OBLIGATIONS

We are obligated to make future payments under unconditional purchase obligations as summarized below:

2017	$	942
2018		525
2019		307
2020		298
2021		276
Thereafter		2,983
Total	$	5,331

Approximately $4,000 of our unconditional purchase obligations relate to helium purchases, which include crude feedstock supply to multiple helium refining plants in North America as well as refined helium purchases from sources around the world. As a rare byproduct of natural gas production in the energy sector, these helium sourcing agreements are medium- to long-term and contain take-or-pay provisions. The refined helium is distributed globally and sold as a merchant gas, primarily under medium-term requirements contracts. While contract terms in the energy sector are longer than those in merchant, helium is a rare gas used in applications with few or no substitutions because of its unique physical and chemical properties.

Approximately $330 of our long-term unconditional purchase obligations relate to feedstock supply for numerous HyCO (hydrogen, carbon monoxide, and syngas) facilities. The price of feedstock supply is principally related to the price of natural gas. However, long-term take-or-pay sales contracts to HyCO customers are generally matched to the term of the feedstock supply obligations and provide recovery of price increases in the feedstock supply. Due to the matching of most long-term feedstock supply obligations to customer sales contracts, we do not believe these purchase obligations would have a material effect on our financial condition or results of operations.

The unconditional purchase obligations also include other product supply and purchase commitments and electric power and natural gas supply purchase obligations, which are primarily pass-through contracts with our customers.

Purchase commitments to spend approximately $350 for additional plant and equipment are included in the unconditional purchase obligations in 2017. In addition, we have purchase commitments totaling approximately $500 in 2017 and 2018 relating to our long-term sale of equipment project for Saudi Aramco’s Jazan oil refinery.

Capital Stock

12 Months Ended

Sep. 30, 2016

Capital Stock [Abstract]

Capital Stock

18. Capital Stock

Common Stock

Authorized common stock consists of 300 million shares with a par value of $1 per share. As of 30 September 2016, 249 million shares were issued, with 217 million outstanding.

On 15 September 2011, the Board of Directors authorized the repurchase of up to $1,000 of our outstanding common stock. We repurchase shares pursuant to Rules 10b5-1 and 10b-18 under the Securities Exchange Act of 1934, as amended, through repurchase agreements established with several brokers. We did not purchase any of our outstanding shares during fiscal year 2016. At 30 September 2016, $485.3 in share repurchase authorization remains.

The following table reflects the changes in common shares:

Year ended 30 September	2016	2015	2014
Number of Common Shares Outstanding
Balance, beginning of year	215,359,113	213,538,144	211,179,257
Issuance of treasury shares for stock option and award plans	1,991,712	1,820,969	2,358,887
Balance, end of year	217,350,825	215,359,113	213,538,144

Preferred Stock

Authorized preferred stock consists of 25 million shares with a par value of $1 per share, of which 2.5 million were designated as Series A Junior Participating Preferred Stock. There were no shares issued or outstanding as of 30 September 2016 and 2015.

Share-Based Compensation

12 Months Ended

Sep. 30, 2016

Share-Based Compensation [Abstract]

Share-Based Compensation

19. Share-Based Compensation

We have various share-based compensation programs, which include deferred stock units, stock options, and restricted stock. Under all programs, the terms of the awards are fixed at the grant date. We issue shares from treasury stock upon the payout of deferred stock units, the exercise of stock options, and the issuance of restricted stock awards. As of 30 September 2016, there were 4,840,837 shares available for future grant under our Long-Term Incentive Plan, which is shareholder approved.

Share-based compensation cost recognized in the consolidated income statements is summarized below:

		2016		2015		2014
Before-Tax Share-Based Compensation Cost	$	37.6	$	45.7	$	44.0
Income tax benefit		(13.1)		(16.0)		(15.6)
After-Tax Share-Based Compensation Cost	$	24.5	$	29.7	$	28.4

Before-tax share-based compensation cost is primarily included in selling and administrative expense on our consolidated income statements. The amount of share-based compensation cost capitalized in 2016, 2015, and 2014 was not material.

Total before-tax share-based compensation cost by type of program was as follows:

		2016		2015		2014
Deferred stock units	$	29.9	$	28.8	$	20.2
Stock options		4.2		12.6		21.6
Restricted stock		3.5		4.3		2.2
Before-Tax Share-Based Compensation Cost	$	37.6	$	45.7	$	44.0

Deferred Stock Units

We have granted deferred stock units to executives, selected employees, and outside directors. These deferred stock units entitle the recipient to one share of common stock upon vesting, which is conditioned, for employee recipients, on continued employment during the deferral period and may be conditioned on achieving certain performance targets. We grant deferred stock unit awards with a two to five year deferral period that is subject to payout upon death, disability, or retirement. Deferred stock units issued to outside directors are paid after service on the Board of Directors ends at the time elected by the director (not to exceed 10 years after service ends). We generally expense the grant-date fair value of these awards on a straight-line basis over the vesting period; however, expense recognition is accelerated for retirement eligible individuals who meet the requirements for vesting upon retirement.

In 2015, we granted 119,272 market-based deferred stock units. The market-based deferred stock units vest as long as the employee continues to be employed by the Company and upon the achievement of the performance target. The performance target, which is approved by the Compensation Committee, is the Company’s total shareholder return (share price appreciation and dividends paid) in relation to a defined peer group over a three-year performance period.

In 2016, we granted 130,167 market-based deferred stock units. The market-based deferred stock units are earned out at the end of a three-year performance period beginning 1 October 2015 and ending 30 September 2018.

The fair value of market-based deferred stock units was estimated using a Monte Carlo simulation model as these equity awards are tied to a market condition. The model utilizes multiple input variables that determine the probability of satisfying the market condition stipulated in the grant and calculates the fair value of the awards. We generally expense the grant-date fair value of these awards on a straight line basis over the vesting period. The calculation of the fair value of market-based deferred stock units used the following assumptions:

	2016		2015
Expected volatility	20.5	%	19.6	%
Risk-free interest rate	1.2	%	.9	%
Expected dividend yield	2.2	%	2.5	%

The estimated grant-date fair value of market-based deferred stock units was $135.49 and $194.51 per unit in 2016 and 2015.

In addition, during 2016, we granted 153,792 time-based deferred stock units at a weighted average grant-date fair value of $137.12.

		Weighted Average
Deferred Stock Units	Shares (000)	Grant-Date Fair Value
Outstanding at 30 September 2015	1,056		$	102.01
Granted	284			136.37
Paid out	(299)			77.81
Forfeited/adjustments	(40)			90.83
Outstanding at 30 September 2016	1,001		$	119.44

Cash payments made for deferred stock units were $2.9, $9.6, and $2.1 in 2016, 2015, and 2014, respectively. As of 30 September 2016, there was $41.4 of unrecognized compensation cost related to deferred stock units. The cost is expected to be recognized over a weighted average period of 2.2 years. The total fair value of deferred stock units paid out during 2016, 2015, and 2014, including shares vested in prior periods, was $41.6, $35.5, and $31.8, respectively.

Stock Options

We have granted awards of options to purchase common stock to executives and selected employees. The exercise price of stock options equals the market price of our stock on the date of the grant. Options generally vest incrementally over three years, and remain exercisable for ten years from the date of grant. In 2016, no stock options were awarded.

Fair values of stock options were estimated using a Black Scholes model that used the assumptions noted in the table below. Expected volatility and expected dividend yield are based on actual historical experience of our stock and dividends over the historical period equal to the expected life. The expected life represents the period of time that options granted are expected to be outstanding based on an analysis of Company-specific historical exercise data. Ranges are used when certain groups of employees exhibit different behavior, such as timing of exercise. The risk-free rate is based on the U.S. Treasury Strips with terms equal to the expected time of exercise as of the grant date.

	2015		2014
Expected volatility	30.3	%	29.8%–31.1	%
Expected dividend yield	2.6	%	2.4–2.9	%
Expected life (in years)	7.5		6.5–8.4
Risk-free interest rate	2.2	%	2.0%–2.7	%

The weighted average grant-date fair value of options granted during 2015 and 2014 was $37.19 and $29.10 per option, respectively.

A summary of stock option activity is presented below:

			Weighted Average
Stock Options		Shares (000)	Exercise Price
Outstanding at 30 September 2015		5,725		$	87.35
Granted		-			-
Exercised		(1,783)			80.66
Forfeited		(26)			106.52
Outstanding at 30 September 2016		3,916		$	90.28
Exercisable at 30 September 2016		3,537		$	86.99

		Weighted Average
	Remaining Contractual		Aggregate Intrinsic
Stock Options		Terms (in years)			Value
Outstanding at 30 September 2016		5.0		$	235
Exercisable at 30 September 2016		4.7		$	224

The aggregate intrinsic value represents the amount by which our closing stock price of $150.34 as of 30 September 2016 exceeds the exercise price multiplied by the number of in-the-money options outstanding or exercisable.

The total intrinsic value of stock options exercised during 2016, 2015, and 2014 was $115.3, $115.5, and $125.3, respectively.

Compensation cost is generally recognized over the stated vesting period consistent with the terms of the arrangement (i.e., either on a straight-line or graded-vesting basis). Expense recognition is accelerated for retirement-eligible individuals who would meet the requirements for vesting of awards upon their retirement. As of 30 September 2016, there was $1.1 of unrecognized compensation cost related to nonvested stock options, which is expected to be recognized over a weighted average period of 0.9 years.

Cash received from option exercises during 2016 was $141.3. The total tax benefit realized from stock option exercises in 2016 was $39.8, of which $25.0 was the excess tax benefit.

Restricted Stock

The grant-date fair value of restricted stock is estimated on the date of grant based on the market price of the stock, and compensation cost is generally amortized to expense on a straight-line basis over the vesting period during which employees perform related services. Expense recognition is accelerated for retirement-eligible individuals who would meet the requirements for vesting of awards upon their retirement.

We have issued shares of restricted stock to certain officers. Participants are entitled to cash dividends and to vote their respective shares. Restrictions on shares lift in one to four years or upon the earlier of retirement, death, or disability. The shares are nontransferable while subject to forfeiture.

		Weighted Average
Restricted Stock	Shares (000)	Grant-Date Fair Value
Outstanding at 30 September 2015	83		$	121.17
Granted	33			138.00
Vested	(31)			119.95
Outstanding at 30 September 2016	85		$	128.16

As of 30 September 2016, there was $5.1 of unrecognized compensation cost related to restricted stock awards. The cost is expected to be recognized over a weighted average period of 2.6 years. The total fair value of restricted stock vested during 2016, 2015, and 2014 was $4.3, $1.4, and $12.1, respectively.

Accumulated Other Comprehensive Loss

12 Months Ended

Sep. 30, 2016

Accumulated Other Comprehensive Loss Net of Tax [Abstract]

Accumulated Other Comprehensive Loss

20. ACCUMULATED OTHER COMPREHENSIVE LOSS

The table below summarizes changes in accumulated other comprehensive loss (AOCL), net of tax, attributable to Air Products:

		Net loss on derivatives qualifying as hedges		Foreign currency translation adjustments		Pension and postretirement benefits		Total
		Net loss on derivatives qualifying as hedges		Foreign currency translation adjustments		Pension and postretirement benefits		Total
Balance at 30 September 2013		$	(4.1)	$	(61.5)	$	(955.0)	$	(1,020.6)
	Other comprehensive income (loss) before reclassifications		(15.2)		(213.1)		(74.2)		(302.5)
	Amounts reclassified from AOCL		(9.1)		-		84.7		75.6
Net current period other comprehensive income (loss)		$	(24.3)	$	(213.1)	$	10.5	$	(226.9)
Amount attributable to noncontrolling interest			.1		(5.9)		.2		(5.6)
Balance at 30 September 2014		$	(28.5)	$	(268.7)	$	(944.7)	$	(1,241.9)
	Other comprehensive income (loss) before reclassifications		(35.0)		(699.3)		(278.5)		(1,012.8)
	Amounts reclassified from AOCL		20.8		-		97.0		117.8
Net current period other comprehensive income (loss)		$	(14.2)	$	(699.3)	$	(181.5)	$	(895.0)
Amount attributable to noncontrolling interest			.2		(11.5)		.3		(11.0)
Balance at 30 September 2015		$	(42.9)	$	(956.5)	$	(1,126.5)	$	(2,125.9)
	Other comprehensive income (loss) before reclassifications		13.7		9.9		(335.1)		(311.5)
	Amounts reclassified from AOCL		(36.0)		2.7		87.2		53.9
Net current period other comprehensive income (loss)		$	(22.3)	$	12.6	$	(247.9)	$	(257.6)
Amount attributable to noncontrolling interest			(.2)		5.4		(.4)		4.8
Balance at 30 September 2016		$	(65.0)	$	(949.3)	$	(1,374.0)	$	(2,388.3)

The table below summarizes the reclassifications out of accumulated other comprehensive loss and the affected line item on the consolidated income statements:

			2016		2015		2014
(Gain) Loss on Cash Flow Hedges, net of tax
	Sales/Cost of sales	$	.2	$	.6	$	.7
	Other income (expense), net		(46.2)		16.9		(8.7)
	Interest expense		10.0		3.3		(1.1)
Total (Gain) Loss on Cash Flow Hedges, net of tax		$	(36.0)	$	20.8	$	(9.1)

Currency Translation Adjustment^(A)		$	2.7	$	―	$	―

Pension and Postretirement Benefits, net of tax^(B)		$	87.2	$	97.0	$	84.7
^(A)	The impact is reflected in Other income (expense), net and primarily relates to the sale of an equity affiliate in the first quarter of 2016.
	Refer to Note 8, Summarized Financial Information of Equity Affiliates.
^(B)	The components include items such as prior service cost amortization, actuarial loss amortization, and settlements and are reflected in net
	periodic benefit cost. Refer to Note 16, Retirement Benefits.

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Quarterly Financial Information Disclosure [Abstract]

Noncontrolling Interests

12 Months Ended

Sep. 30, 2016

Noncontrolling Interests

Noncontrolling Interests

21. NONCONTROLLING INTERESTS

INDURA S.A.

Redeemable Noncontrolling Interest

In 2012, we purchased a controlling equity interest in the outstanding shares of Indura S.A. As part of the purchase agreement, the largest minority shareholder in Indura S.A. had the right to exercise a put option to require us to purchase up to a 30.5% equity interest during the two-year period beginning on 1 July 2015, at a redemption value equal to the greater of fair market value or the acquisition date value escalated by an inflation factor (the “floor value”). The put option was not accounted for separate from the minority interest shares that were subject to the put option. The redemption feature of the put option required classification of the minority shareholder’s interest in the consolidated balance sheet outside of equity under the caption “Redeemable Noncontrolling Interest.”

In July 2015, we completed the purchase of the 30.5% equity interest in our Indura S.A. subsidiary from the largest minority shareholder for $277.9 based on terms substantially consistent with the original purchase agreement. The purchase was funded by the issuance of commercial paper. We currently have a 97.8% controlling equity interest in Indura S.A.

The following is a summary of the changes in redeemable noncontrolling interest for the year ended 30 September 2015:


Balance at 30 September 2014	$	287.2
Net income		11.5
Dividends		(2.0)
Purchase of noncontrolling interest		(277.9)
Currency translation adjustment		(18.8)
Balance at 30 September 2015	$	-

As redeemable noncontrolling interest is not part of total equity, the impacts above are excluded from our consolidated statements of equity.

Earnings per Share

12 Months Ended

Sep. 30, 2016

Earnings Per Share

Earnings per Share

22. EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted earnings per share (EPS):

30 September			2016		2015		2014
Numerator
Income from continuing operations		$	1,515.3	$	1,284.7	$	994.6
Income (Loss) from discontinued operations			(884.2)		(6.8)		(2.9)
Net Income Attributable to Air Products		$	631.1	$	1,277.9	$	991.7

Denominator (in millions)
Weighted average common shares — Basic			216.4		214.9		212.7
Effect of dilutive securities
	Employee stock option and other award plans		1.9		2.4		2.5
Weighted average common shares — Diluted			218.3		217.3		215.2

Basic EPS Attributable to Air Products
Income from continuing operations		$	7.00	$	5.98	$	4.68
Income (Loss) from discontinued operations			(4.08)		(.03)		(.02)
Net Income Attributable to Air Products		$	2.92	$	5.95	$	4.66

Diluted EPS Attributable to Air Products
Income from continuing operations		$	6.94	$	5.91	$	4.62
Income (Loss) from discontinued operations			(4.05)		(.03)		(.01)
Net Income Attributable to Air Products		$	2.89	$	5.88	$	4.61

Diluted EPS attributable to Air Products reflects the potential dilution that could occur if stock options or other share-based awards were exercised or converted into common stock. The dilutive effect is computed using the treasury stock method, which assumes all share-based awards are exercised and the hypothetical proceeds from exercise are used by the Company to purchase common stock at the average market price during the period. The incremental shares (difference between shares assumed to be issued versus purchased), to the extent they would have been dilutive, are included in the denominator of the diluted EPS calculation. Outstanding share-based awards of .2 million shares, .2 million shares, and .6 million shares were antidilutive and therefore excluded from the computation of diluted EPS for 2016, 2015, and 2014, respectively.

Income Taxes

12 Months Ended

Sep. 30, 2016

Income Tax Disclosure [Abstract]

Income Taxes

23. INCOME TAXES

The following table summarizes the income of U.S. and foreign operations before taxes:
		2016		2015		2014
Income from Continuing Operations before Taxes
United States	$	897.5	$	742.0	$	562.2
Foreign		1,086.1		846.2		651.8
Income from equity affiliates		148.6		154.5		151.4
Total	$	2,132.2	$	1,742.7	$	1,365.4

The following table shows the components of the provision for income taxes:

		2016		2015		2014
Current Tax Provision
Federal	$	237.9	$	177.1	$	19.3
State		29.1		16.9		13.0
Foreign		256.6		221.4		211.6
		523.6		415.4		243.9
Deferred Tax Provision
Federal		42.2		(3.5)		98.2
State		3.6		19.1		(2.7)
Foreign		17.1		(12.7)		30.0
		62.9		2.9		125.5
Income Tax Provision	$	586.5	$	418.3	$	369.4

A reconciliation of the differences between the United States federal statutory tax rate and the effective tax rate is as follows:

(Percent of income before taxes)	2016		2015		2014
U.S. federal statutory tax rate	35.0	%	35.0	%	35.0	%
State taxes, net of federal benefit	1.1		1.0		.5
Income from equity affiliates	(2.4)		(3.0)		(3.9)
Foreign tax differentials	(7.0)		(6.6)		(8.2)
U.S. taxes on foreign earnings	(2.3)		(1.6)		(1.7)
Domestic production activities	(.8)		(.9)		(.7)
Non-deductible goodwill impairment charge	―		―		8.0
Non-U.S. subsidiary tax election	―		―		(3.8)
Business separation costs	3.1		.2		―
Other^(A)	.8		(.1)		1.9
Effective Tax Rate	27.5	%	24.0	%	27.1	%

^(A) Other includes the impact of Chilean tax rate changes of 1.5% in 2014.

Income tax payments, net of refunds, were $440.8 in 2016, $392.9 in 2015, and $160.6 in 2014.

Foreign tax differentials represent the differences between foreign earnings subject to foreign tax rates lower than the U.S. federal statutory tax rate of 35.0%. Foreign earnings are subject to local country tax rates that are generally below the 35.0% U.S. federal statutory rate and include tax holidays and incentives. As a result, our effective non-U.S. tax rate is typically lower than the U.S. statutory rate. If foreign pre-tax earnings increase relative to U.S. pre-tax earnings, this rate difference could increase. The jurisdictions in which we earn pre-tax earnings subject to lower foreign taxes than the U.S. statutory rate include South Korea, Taiwan, the United Kingdom, China, Canada, Spain and Belgium. As more than 80% of the undistributed earnings are in countries with a statutory tax rate of 24% or higher, we do not generate a disproportionate amount of taxable income in countries with very low tax rates. U.S. taxes on foreign earnings is a tax benefit primarily due to foreign tax credits on the repatriation of foreign earnings to the U.S.

In 2016, the effective tax rate was impacted by tax costs of $51.8 incurred in anticipation of the tax-free spin-off of Versum, primarily for a dividend declared during the third quarter of 2016 to repatriate $443.8 from a subsidiary in South Korea to the U.S. Previously, most of these foreign earnings were considered to be indefinitely reinvested. In addition, a tax benefit was not available on a significant portion of the business separation costs. Refer to Note 3, Materials Technologies Separation, for additional information.

In 2014, the effective tax rate was impacted by losses from transactions and a tax election made with respect to a non-U.S. subsidiary resulting in an income tax benefit of $51.6. This benefit was partially offset by income tax expense of $20.6 related to the tax reform legislation enacted in Chile. The effective tax rate was also impacted by the goodwill impairment charge of $305.2 that was not deductible for tax purposes. See Note 10, Goodwill, for additional information regarding the impairment charge.

The significant components of deferred tax assets and liabilities are as follows:

30 September		2016		2015
Gross Deferred Tax Assets
Retirement benefits and compensation accruals	$	537.9	$	468.7
Tax loss carryforwards		93.0		116.7
Tax credits and other tax carryforwards		56.0		43.8
Reserves and accruals		80.1		71.9
Partnership and other investments		4.8		6.2
Other		45.8		66.3
Valuation allowance		(155.2)		(103.6)
Deferred Tax Assets		662.4		670.0
Gross Deferred Tax Liabilities
Plant and equipment		1,034.8		1,124.6
Currency gains		46.4		65.7
Unremitted earnings of foreign entities		5.4		62.7
Intangible assets		134.1		135.6
Other		16.1		2.1
Deferred Tax Liabilities		1,236.8		1,390.7
Net Deferred Income Tax Liability	$	574.4	$	720.7

Deferred tax assets and liabilities are included within the consolidated financial statements as follows:

		2016		2015
Deferred Tax Assets
Other noncurrent assets	$	192.7	$	82.7
Deferred Tax Liabilities
Deferred income taxes		767.1		803.4
Net Deferred Income Tax Liability	$	574.4	$	720.7

Gross federal loss and tax credit carryforwards as of 30 September 2016 were $137.1 and $25.7, respectively. The federal loss carryforward is primarily a capital loss due to a 2014 tax election related to a non-U.S. subsidiary that expires in 2019. The federal tax credit carryforwards expire in 2025 and 2026. Gross state loss and tax credit carryforwards as of 30 September 2016 were $123.2 and $3.3, respectively. The state tax carryforwards have expiration periods between 2018 and 2034. Gross foreign loss and tax credit carryforwards as of 30 September 2016 were $155.0 and $27.0, respectively. Foreign tax carryforwards of $119.5 have expiration periods between 2017 and 2026; the remainder have unlimited carryforward periods.

The valuation allowance as of 30 September 2016 of $155.2 primarily related to the tax benefit on the federal capital loss carryforward of $48.0, tax benefit of foreign loss carryforwards of $37.7, and capital assets of $58.0 that were generated from the loss recorded on the exit from the Energy-from-Waste business in 2016. If events warrant the reversal of the valuation allowance, it would result in a reduction of tax expense. We believe it is more likely than not that future earnings and reversal of deferred tax liabilities will be sufficient to utilize our deferred tax assets, net of existing valuation allowance, at 30 September 2016. The deferred tax liability associated with unremitted earnings of foreign entities decreased in part due to the dividend to repatriate cash from a foreign subsidiary in South Korea. This amount was also impacted by ongoing activity including earnings, dividend payments, tax credit adjustments, and currency translation impacting the undistributed earnings of our foreign subsidiaries and corporate joint ventures which are not considered to be indefinitely reinvested outside of the U.S.

We record U.S. income taxes on the undistributed earnings of our foreign subsidiaries and corporate joint ventures unless those earnings are indefinitely reinvested outside of the U.S. These cumulative undistributed earnings that are considered to be indefinitely reinvested in foreign subsidiaries and corporate joint ventures are included in retained earnings on the consolidated balance sheets and amounted to $6,300.9 as of 30 September 2016. An estimated $1,467.8 in U.S. income and foreign withholding taxes would be due if these earnings were remitted as dividends after payment of all deferred taxes.

A reconciliation of the beginning and ending amount of the unrecognized tax benefits is as follows:

Unrecognized Tax Benefits		2016		2015		2014
Balance at beginning of year	$	97.5	$	108.7	$	124.3
Additions for tax positions of the current year		15.0		6.9		8.1
Additions for tax positions of prior years		3.8		7.5		4.9
Reductions for tax positions of prior years		(.3)		(7.9)		(14.6)
Settlements		(5.6)		(.6)		―
Statute of limitations expiration		(3.0)		(11.2)		(14.0)
Foreign currency translation		(.5)		(5.9)		―
Balance at End of Year	$	106.9	$	97.5	$	108.7

At 30 September 2016 and 2015, we had $106.9 and $97.5 of unrecognized tax benefits, excluding interest and penalties, of which $64.5 and $62.5, respectively, would impact the effective tax rate if recognized.

Interest and penalties related to unrecognized tax benefits are recorded as a component of income tax expense and totaled $2.3 in 2016, $(1.8) in 2015, and $1.2 in 2014. Our accrued balance for interest and penalties was $9.8 and $7.5 as of 30 September 2016 and 2015, respectively.

We are currently under examination in a number of tax jurisdictions, some of which may be resolved in the next twelve months. As a result, it is reasonably possible that a change in the unrecognized tax benefits may occur during the next twelve months. However, quantification of an estimated range cannot be made at this time.

We generally remain subject to examination in the following major tax jurisdictions for the years indicated below:

Major Tax Jurisdiction		Open Tax Years
North America
	United States	2011–2016
	Canada	2012–2016
Europe
	France	2013–2016
	Germany	2011–2016
	Netherlands	2011–2016
	Spain	2011–2016
	United Kingdom	2013–2016
Asia
	China	2010–2016
	Singapore	2010–2016
	South Korea	2010–2016
	Taiwan	2011–2016
Latin America
	Chile	2013–2016

Supplemental Information

12 Months Ended

Sep. 30, 2016

Supplemental Information [Abstract]

Supplemental Information

24. SUPPLEMENTAL INFORMATION


Other Receivables and Current Assets
30 September		2016		2015
Derivative instruments	$	170.9	$	72.9
Other receivables		197.5		167.6
Current capital lease receivables		88.2		84.2
Prepaid inventory		92.8		-
Other		6.2		18.8
	$	555.6	$	343.5

Other Noncurrent Assets
30 September		2016		2015
Derivative instruments	$	204.4	$	246.0
Other long-term receivables		20.6		21.4
Deferred financing cost, net		29.6		20.2
Prepaid tax		53.5		31.3
Deferred tax assets		192.7		82.7
Deposits		36.5		40.1
Other		200.0		206.9
	$	737.3	$	648.6

Payables and Accrued Liabilities
30 September		2016		2015
Trade creditors	$	676.1	$	621.9
Customer advances		376.1		195.3
Accrued payroll and employee benefits		262.6		272.9
Pension and postretirement benefits		35.5		26.1
Dividends payable		186.9		174.4
Outstanding payments in excess of certain cash balances		11.9		27.5
Accrued interest expense		47.9		52.9
Derivative instruments		74.0		114.6
Severance and other costs associated with business restructuring and cost reduction actions		16.3		41.7
Other		123.3		114.4
	$	1,810.6	$	1,641.7


Other Noncurrent Liabilities
30 September		2016		2015
Pension benefits	$	1,186.8	$	860.0
Postretirement benefits		74.9		76.5
Other employee benefits		108.3		106.7
Contingencies related to uncertain tax positions		95.6		91.1
Advance payments		43.8		135.1
Environmental liabilities		70.3		71.6
Derivative instruments		21.8		10.6
Asset retirement obligations		116.1		106.5
Obligation for future contribution to an equity affiliate		94.4		67.5
Other		61.4		28.4
	$	1,873.4	$	1,554.0


Other Income (Expense), Net
30 September		2016		2015		2014
Technology and royalty income	$	20.1	$	25.0	$	26.8
Interest income		6.2		4.6		9.4
Foreign exchange		(5.8)		(22.3)		(7.7)
Sale of assets and investments		10.1		37.1		12.5
Contract settlements		12.6		―		2.8
Other		14.9		2.9		9.0
	$	58.1	$	47.3	$	52.8

Gain on Land Sales

During the fourth quarter of 2015, we sold two parcels of land resulting in a gain of $33.6 ($28.3 after-tax, or $.13 per share). The gain is reflected in sale of assets and investments in the table above.

Summary by Quarter (Unaudited)

12 Months Ended

Sep. 30, 2016

Quarterly Financial Information [Text Block]

25. SUMMARY BY QUARTER (UNAUDITED)

These tables summarize the unaudited results of operations for each quarter of 2016 and 2015:

2016			Q1		Q2			Q3			Q4			Total
Sales		$	2,355.8	$	2,271.2		$	2,434.4		$	2,463.0		$	9,524.4
Gross profit^(A)			760.1		752.2			795.1			814.3			3,121.7
Business separation costs^(B)			12.0		7.4			9.5			23.3			52.2
Business restructuring and cost reduction actions^(C)			-		8.6			14.2			11.1			33.9
Pension settlement loss^(D)			-		2.6			1.0			2.8			6.4
Operating income^(A)			510.6		513.3			535.1			547.0			2,106.0
Loss on extinguishment of debt^(E)			-		-			-			6.9			6.9
Income tax provision			135.9		132.5	^(F)		179.5	^(F)		138.6	^(F)		586.5	^(F)
Net income (loss)			372.0		(465.5)			354.1			400.9			661.5

Net income attributable to Air Products
Income from continuing operations			377.8		379.8			355.7			402.0			1,515.3
Loss from discontinued operations			(14.2)		(853.1)			(8.9)			(8.0)			(884.2)
Net income (loss) attributable to Air Products			363.6		(473.3)			346.8			394.0			631.1

Basic Earnings Per Common Share Attributable to Air Products
Income from continuing operations			1.75		1.76			1.64			1.85			7.00
Loss from discontinued operations			(.07)		(3.95)			(.04)			(.04)			(4.08)
Net income (loss) attributable to Air Products			1.68		(2.19)			1.60			1.81			2.92

Diluted Earnings Per Common Share Attributable to Air Products
Income from continuing operations			1.73		1.74			1.63			1.84			6.94
Loss from discontinued operations			(.06)		(3.91)			(.04)			(.04)			(4.05)
Net income (loss) attributable to Air Products			1.67		(2.17)			1.59			1.80			2.89

Dividends declared per common share			.81		.86			.86			.86			3.39

Market price per common share:	High		143.83		147.16			152.16			157.84
	Low		126.65		114.64			134.15			137.31

2015			Q1		Q2			Q3			Q4			Total
Sales		$	2,560.8	$	2,414.5		$	2,470.2		$	2,449.4		$	9,894.9
Gross profit			731.1		716.3			755.0			753.5			2,955.9
Business separation costs^(B)			-		-			-			7.5			7.5
Business restructuring and cost reduction actions^(C)			32.4		55.4			58.2			61.7			207.7
Pension settlement loss^(D)			-		12.6			1.6			7.0			21.2
Gain on previously held equity interest^(G)			17.9		-			-			-			17.9
Gain on land sales^(H)			-		-			-			33.6			33.6
Operating income			432.3		376.9			424.8			474.3			1,708.3
Loss on extinguishment of debt^(E)			-		-			-			16.6			16.6
Income tax provision			107.1		87.7			104.1			119.4			418.3
Net income			337.5		296.9			333.2			350.0			1,317.6

Net income attributable to Air Products
Income from continuing operations			326.3		291.9			320.5			346.0			1,284.7
Loss from discontinued operations			(1.7)		(1.9)			(1.7)			(1.5)			(6.8)
Net income attributable to Air Products			324.6		290.0			318.8			344.5			1,277.9

Basic Earnings Per Common Share Attributable to Air Products
Income from continuing operations			1.53		1.36			1.49			1.61			5.98
Loss from discontinued operations			(.01)		(.01)			(.01)			(.01)			(.03)
Net income attributable to Air Products			1.52		1.35			1.48			1.60			5.95

Diluted Earnings Per Common Share Attributable to Air Products
Income from continuing operations			1.51		1.34			1.48			1.59			5.91
Loss from discontinued operations			(.01)		(.01)			(.01)			(.01)			(.03)
Net income attributable to Air Products			1.50		1.33			1.47			1.58			5.88

Dividends declared per common share			.77		.81			.81			.81			3.20

Market price per common share:	High		149.61		158.20			153.93			148.56
	Low		118.20		137.07			136.69			123.66

^(A) Changes in estimates on projects accounted for under the percentage of completion method favorably impacted income by
approximately $20 in fiscal year 2016, primarily during the fourth quarter. For additional information, see Note 1, Major
Accounting Policies (Revenue Recognition).
^(B) For additional information, see Note 3, Materials Technologies Separation.
^(C) For additional information, see Note 5, Business Restructuring and Cost Reduction Actions.
^(D) For additional information, see Note 16, Retirement Benefits.
^(E) For additional information, see Note 15, Debt.
^(F) Includes income tax expense for tax costs associated with business separation. For additional information, see Note 3, Materials
Technologies Separation.
^(G) For additional information, see Note 6, Business Combination.
^(H) The gain is reflected on the consolidated income statements in “Other income (expense), net.” For additional information, see
Note 24, Supplemental Information.

Business Segment and Geographic Information

12 Months Ended

Sep. 30, 2016

Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]

Business Segment and Geographic Information

26. Business Segment and Geographic Information

Our reporting segments reflect the manner in which our chief operating decision maker reviews results and allocates resources. Except in the Corporate and other segment, each reporting segment meets the definition of an operating segment and does not include the aggregation of multiple operating segments. Our liquefied natural gas (LNG) and helium storage and distribution sale of equipment businesses are aggregated within the Corporate and other segment.

Our reporting segments are:

Industrial Gases – Americas
Industrial Gases – EMEA (Europe, Middle East, and Africa)
Industrial Gases – Asia
Industrial Gases – Global
Materials Technologies
Corporate and other

Industrial Gases – Regional

The regional Industrial Gases (Americas, EMEA, Asia) segments include the results of our regional industrial gas businesses, which produce and sell atmospheric gases such as oxygen, nitrogen, and argon (primarily recovered by the cryogenic distillation of air) and process gases such as hydrogen, carbon monoxide, helium, syngas, and specialty gases. We supply gases to customers in many industries, including those in metals, glass, chemical processing, energy production and refining, food processing, metallurgical industries, medical, and general manufacturing. We distribute gases to our customers through a variety of supply modes including liquid or gaseous bulk supply delivered by tanker or tube trailer and, for smaller customers, packaged gases delivered in cylinders and dewars or small on-sites (cryogenic or non-cryogenic generators). For large-volume customers, we construct an on-site plant adjacent to or near the customer’s facility or deliver product from one of our pipelines. We are the world’s largest provider of hydrogen, which is used by refiners to facilitate the conversion of heavy crude feedstock and lower the sulfur content of gasoline and diesel fuels.

Electricity is the largest cost component in the production of atmospheric gases, and natural gas is the principal raw material for hydrogen, carbon monoxide, and syngas production. We mitigate energy and natural gas prices contractually through pricing formulas, surcharges, and cost pass-through arrangements. The regional Industrial Gases segments also include our share of the results of several joint ventures accounted for by the equity method. The largest of these joint ventures operate in Mexico, Italy, South Africa, India, Saudi Arabia, and Thailand. Each of the regional Industrial Gases segments competes against global industrial gas companies as well as regional competitors. Competition is based primarily on price, reliability of supply, and the development of industrial gas applications. We derive a competitive advantage in locations where we have pipeline networks, which enable us to provide reliable and economic supply of products to larger customers.

Industrial Gases – Global

The Industrial Gases – Global segment includes cryogenic and gas processing equipment sales for air separation. The equipment is sold worldwide to customers in a variety of industries, including chemical and petrochemical manufacturing, oil and gas recovery and processing, and steel and primary metals processing. The Industrial Gases – Global segment also includes centralized global costs associated with management of all the Industrial Gases segments. These costs include Industrial Gases global administrative costs, product development costs, and research and development costs. We compete with a large number of firms for all the offerings included in the Industrial Gases – Global segment. Competition in the equipment businesses is based primarily on technological performance, service, technical know-how, price, and performance guarantees.

Materials Technologies

The Materials Technologies segment, which contains two divisions, Electronic Materials (EMD) and Performance Materials (PMD), employs applications technology to provide solutions to a broad range of global industries through chemical synthesis, analytical technology, process engineering, and surface science. EMD provides specialty gases, specialty chemicals, services, and equipment to the electronics industry, primarily for the manufacture of silicon and compound semiconductors and thin film transistor liquid crystal (LCD) displays. PMD provides performance chemical solutions for the coatings, inks, adhesives, construction and civil engineering, personal care, institutional and industrial cleaning, mining, oil refining, and polyurethanes industries. We compete in the businesses included in the Materials Technologies segment on a product-by-product basis against competitors ranging from niche suppliers with a single product to larger and more vertically integrated companies. Competition is principally conducted on the basis of price, quality, product performance, reliability of product supply, technical innovation, service, and global infrastructure.

During 2016, Air Products entered into an agreement to sell certain subsidiaries and assets comprising the PMD division. The sale is subject to regulatory and anti-trust requirements. On 1 October 2016, Air Products completed the separation of its EMD division through the spin-off of Versum. Refer to Note 3, Materials Technologies Separation, for additional information.

Corporate and other

The Corporate and other segment includes two ongoing global businesses (our LNG sale of equipment business and our liquid helium and liquid hydrogen transport and storage container businesses), the polyurethane intermediates (PUI) business that was exited in early fiscal year 2014, and corporate support functions that benefit all the segments. Competition for the two sale of equipment businesses is based primarily on technological performance, service, technical know-how, price, and performance guarantees. Corporate and other also includes income and expense that cannot be directly associated with the business segments, including foreign exchange gains and losses and stranded costs resulting from discontinued operations. Also included are LIFO inventory adjustments, as the business segments use FIFO, and the LIFO pool adjustments are not allocated to the business segments.

In addition to assets of the global businesses included in this segment, other assets include cash, deferred tax assets, and financial instruments.

Customers

We do not have a homogeneous customer base or end market, and no single customer accounts for more than 10% of our consolidated revenues.

Accounting Policies

The accounting policies of the segments are the same as those described in Note 1, Major Accounting Policies. We evaluate the performance of segments based upon reported segment operating income.

Business Segment

		Industrial		Industrial		Industrial		Industrial
		Gases–		Gases–		Gases–		Gases–		Materials		Corporate		Segment
		Americas		EMEA		Asia		Global		Technologies		and other		Total

2016
Sales to external customers		$	3,343.6	$	1,700.3	$	1,716.1	$	498.8	$	2,019.5	$	246.1	$	9,524.4
Operating income (loss)			895.2		382.8		449.1		(21.3)		530.2		(37.5)		2,198.5
Depreciation and amortization			442.5		185.7		197.1		7.9		77.4		15.3		925.9
Equity affiliates' income (loss)			52.7		36.5		57.8		(.1)		1.7		-		148.6
Expenditures for long-lived assets			406.6		159.5		313.3		6.0		147.9		22.5		1,055.8
Investments in net assets of and
	advances to equity affiliates		250.6		580.5		442.5		10.0		4.5		-		1,288.1
Total assets			5,889.2		3,178.6		4,232.7		367.6		1,787.0		2,580.8		18,035.9


2015
Sales to external customers		$	3,693.9	$	1,864.9	$	1,637.5	$	286.8	$	2,087.1	$	324.7	$	9,894.9
Operating income (loss)			808.4		330.7		380.5		(51.6)		476.7		(51.5)		1,893.2
Depreciation and amortization			416.9		194.3		202.9		16.5		92.8		13.0		936.4
Equity affiliates' income (loss)			64.6		42.4		46.1		(.8)		2.2		-		154.5
Expenditures for long-lived assets			414.5		215.6		402.5		94.8		102.5		35.7		1,265.6
Investments in net assets of and
	advances to equity affiliates		249.7		564.1		421.7		14.3		15.9		-		1,265.7
Total assets			5,774.9		3,323.9		4,154.0		370.5		1,741.9		1,075.7		16,440.9


2014
Sales to external customers		$	4,078.5	$	2,150.7	$	1,527.0	$	296.0	$	2,064.6	$	322.2	$	10,439.0
Operating income (loss)			762.6		351.2		310.4		(57.3)		379.0		(78.5)		1,667.4
Depreciation and amortization			414.4		220.2		205.3		7.1		99.1		10.8		956.9
Equity affiliates' income			60.9		44.1		38.0		5.8		2.6		-		151.4
Expenditures for long-lived assets			484.2		239.1		430.3		77.7		64.2		67.2		1,362.7
Investments in net assets of and
	advances to equity affiliates		234.3		552.9		434.1		18.8		17.8		-		1,257.9
Total assets			6,240.7		3,521.0		4,045.6		389.4		1,835.7		1,044.5		17,076.9

Below is a reconciliation of segment total operating income to consolidated operating income:

Operating Income		2016		2015		2014
Segment total	$	2,198.5	$	1,893.2	$	1,667.4
Business separation costs		(52.2)		(7.5)		-
Business restructuring and cost reduction actions		(33.9)		(207.7)		(12.7)
Pension settlement loss		(6.4)		(21.2)		(5.5)
Goodwill and intangible asset impairment charge		-		-		(310.1)
Gain on previously held equity interest		-		17.9		-
Gain on land sales^(A)		-		33.6		-
Consolidated Total	$	2,106.0	$	1,708.3	$	1,339.1

^(A)Reflected on the consolidated income statements in "Other income (expense), net."

Below is a reconciliation of segment total assets to consolidated total assets:

Total Assets		2016		2015		2014
Segment total	$	18,035.9	$	16,440.9	$	17,076.9
Discontinued operations		19.4		893.6		591.4
Consolidated Total	$	18,055.3	$	17,334.5	$	17,668.3

The sales information noted above relates to external customers only. All intersegment sales are eliminated in consolidation. The Industrial Gases – Global segment had intersegment sales of $232.4 in 2016, $242.8 in 2015, and $192.4 in 2014. These sales are generally transacted at market pricing. For all other segments, intersegment sales are not material for all periods presented. Equipment manufactured for our regional industrial gases segments are generally transferred at cost and not reflected as an intersegment sale.

Geographic Information

Sales to External Customers		2016		2015		2014
United States	$	3,792.3	$	4,280.1	$	4,507.6
Canada		225.7		247.1		311.4
Europe		2,505.9		2,315.4		2,628.0
Asia, excluding China		1,382.7		1,395.2		1,389.4
China		1,176.2		1,129.1		981.0
Latin America		441.6		528.0		621.6
Total	$	9,524.4	$	9,894.9	$	10,439.0

Long-Lived Assets ^(A)		2016		2015		2014
United States	$	3,780.2	$	3,788.5	$	3,754.2
Canada		639.0		577.4		518.0
Europe		1,306.1		1,395.0		1,656.7
Asia, excluding China		1,056.5		914.2		989.9
China		1,721.9		1,732.7		1,582.7
Latin America		349.0		337.3		440.1
Total	$	8,852.7	$	8,745.1	$	8,941.6

^(A) Long-lived assets include plant and equipment, net.

Geographic information is based on country of origin. Included in United States revenues are export sales to third-party customers of $307.7 in 2016, $398.8 in 2015, and $378.7 in 2014. The Europe region operates principally in France, Germany, the Netherlands, Poland, Saudi Arabia, Spain, and the United Kingdom. The Asia region operates principally in China, Singapore, South Korea, and Taiwan. The Latin America region operates principally in Brazil and Chile.

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8595-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8380-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Valuation and Qualifying Accounts [Abstract]

Schedule II

12 Months Ended

Sep. 30, 2016

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

SCHEDULE II
CONSOLIDATED
AIR PRODUCTS AND CHEMICALS, INC. AND SUBSIDIARIES
SCHEDULE II–VALUATION AND QUALIFYING ACCOUNTS
For the Years Ended 30 September 2016, 2015, and 2014

			Balance at		Additions		Additions					Balance
			Beginning		Charged to		Charged to		Other			at End of
			of Period		Expense		Other Accounts		Changes	^(A)		Period



Year Ended 30 September 2016
	Allowance for doubtful accounts	$	49	$	9	$	14	$	(15)		$	57
	Allowance for deferred tax assets^(B)		104		1		51		(1)			155

Year Ended 30 September 2015
	Allowance for doubtful accounts	$	60	$	8	$	18	$	(37)		$	49
	Allowance for deferred tax assets		104		-		2		(2)			104

Year Ended 30 September 2014
	Allowance for doubtful accounts	$	102	$	8	$	8	$	(58)		$	60
	Allowance for deferred tax assets^(C)		45		58		1		-			104

^(A)	Primarily includes write-offs of uncollectible trade receivables. Other Changes also includes the impact of foreign currency translation adjustments.
^(B)	The increase in the valuation allowance was primarily due to the loss recorded on the exit from the Energy-from-Waste business. These costs were
	recorded in discontinued operations. See Note 4, Discontinued Operations, for additional information.
^(C)	The increase in the valuation allowance was primarily due to the capital loss generated from the tax election related to a non-U.S. subsidiary.

Major Accounting Policies (Policies)	12 Months Ended
Major Accounting Policies (Policies)	Sep. 30, 2016
Accounting Policies [Abstract]
Basis of Presentation and Consolidation Principles	Basis of Presentation and Consolidation Principles The accompanying consolidated financial statements of Air Products and Chemicals, Inc. were prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and include the accounts of Air Products and Chemicals, Inc. and those of its controlled subsidiaries (“we,” “our,” “us,” the “Company,” “Air Products,” or “registrant”), which are generally majority owned. Intercompany transactions and balances are eliminated in consolidation. We consolidate all entities that we control. The general condition for control is ownership of a majority of the voting interests of an entity. Control may also exist in arrangements where we are the primary beneficiary of a variable interest entity (VIE). An entity that has both the power to direct the activities that most significantly impact the economic performance of a VIE and the obligation to absorb the losses or receive the benefits significant to the VIE is considered the primary beneficiary of that entity. We have determined that we are not a primary beneficiary in any material VIE. Certain prior year information has been reclassified to conform to the 2016 presentation.
Estimates and Assumptions	Estimates and Assumptions The preparation of the financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
Revenue Recognition	Revenue Recognition Revenue from product sales is recognized as risk and title to the product transfer to the customer (which generally occurs at the time shipment is made), the sales price is fixed or determinable, and collectability is reasonably assured. Sales returns and allowances are not a business practice in the industry. Revenue from equipment sale contracts is recorded primarily using the percentage-of-completion method. Under this method, revenue from the sale of major equipment, such as liquefied natural gas (LNG) heat exchangers and large air separation units, is recognized based on labor hours or costs incurred to date compared with total estimated labor hours or costs to be incurred. When adjustments in estimated total contract revenues or estimated total costs or labor hours are required, any changes in the estimated profit from prior estimates are recognized in the current period for the inception-to-date effect of such change. Changes in estimates on projects accounted for under the percentage-of-completion method favorably impacted operating income by approximately $20 in fiscal year 2016, primarily during the fourth quarter. Our changes in estimates would not have significantly impacted amounts recorded in prior years. Changes in estimates during fiscal years 2015 and 2014 were not significant. Certain contracts associated with facilities that are built to provide product to a specific customer are required to be accounted for as leases. In cases where operating lease treatment is necessary, there is no difference in revenue recognition over the life of the contract as compared to accounting for the contract as product sales. In cases where capital lease treatment is necessary, the timing of revenue and expense recognition is impacted. Revenue and expense are recognized up front for the sale of equipment component of the contract as compared to revenue recognition over the life of the arrangement under contracts not qualifying as capital leases. Additionally, a portion of the revenue representing interest income from the financing component of the lease receivable is reflected as sales over the life of the contract. Allowances for credit losses associated with capital lease receivables are recorded using the specific identification method. As of 30 September 2016 and 2015, the credit quality of capital lease receivables did not require an allowance for credit losses. If an arrangement involves multiple deliverables, the delivered items are considered separate units of accounting if the items have value on a stand-alone basis. Revenues are allocated to each deliverable based upon relative selling prices derived from company specific evidence. Amounts billed for shipping and handling fees are classified as sales in the consolidated income statements. Amounts billed for sales and use taxes, value-added taxes, and certain excise and other specific transactional taxes imposed on revenue-producing transactions are presented on a net basis and excluded from sales in the consolidated income statements. We record a liability until remitted to the respective taxing authority.
Cost of Sales	Cost of Sales Cost of sales predominantly represents the cost of tangible products sold. These costs include labor, raw materials, plant engineering, power, depreciation, production supplies and materials packaging costs, and maintenance costs. Costs incurred for shipping and handling are also included in cost of sales.
Depreciation	Depreciation Depreciation is recorded using the straight-line method, which deducts equal amounts of the cost of each asset from earnings every year over its expected economic useful life. The principal lives for major classes of plant and equipment are summarized in Note 9, Plant and Equipment, net.
Selling and Administrative	Selling and Administrative The principal components of selling and administrative expenses are compensation, advertising, and promotional costs.
Postemployment Benefits	Postemployment Benefits We provide termination benefits to employees as part of ongoing benefit arrangements and record a liability for termination benefits when probable and estimable. These criteria are met when management, with the appropriate level of authority, approves and commits to its plan of action for termination; the plan identifies the employees to be terminated and their related benefits; and the plan is to be completed within one year. We do not provide one-time benefit arrangements of significance.
Fair Value Measurements	Fair Value Measurements We are required to measure certain assets and liabilities at fair value, either upon initial measurement or for subsequent accounting or reporting. For example, fair value is used in the initial measurement of net assets acquired in a business combination; on a recurring basis in the measurement of derivative financial instruments; and on a nonrecurring basis when long-lived assets are written down to fair value when held for sale or determined to be impaired. Refer to Note 14, Fair Value Measurements, for information on the methods and assumptions used in our fair value measurements
Financial Instruments	Financial Instruments We address certain financial exposures through a controlled program of risk management that includes the use of derivative financial instruments. The types of derivative financial instruments permitted for such risk management programs are specified in policies set by management. Refer to Note 13, Financial Instruments, for further detail on the types and use of derivative instruments into which we enter. Major financial institutions are counterparties to all of these derivative contracts. We have established counterparty credit guidelines and generally enter into transactions with financial institutions of investment grade or better. Management believes the risk of incurring losses related to credit risk is remote, and any losses would be immaterial to the consolidated financial results, financial condition, or liquidity. We recognize derivatives on the balance sheet at fair value. On the date the derivative instrument is entered into, we generally designate the derivative as either (1) a hedge of a forecasted transaction or of the variability of cash flows to be received or paid related to a recognized asset or liability (cash flow hedge), (2) a hedge of a net investment in a foreign operation (net investment hedge), or (3) a hedge of the fair value of a recognized asset or liability (fair value hedge). The following details the accounting treatment of our cash flow, fair value, net investment, and non-designated hedges: Changes in the fair value of a derivative that is designated as and meets the cash flow hedge criteria are recorded in Accumulated other comprehensive loss (AOCL) to the extent effective and then recognized in earnings when the hedged items affect earnings. Changes in the fair value of a derivative that is designated as and meets all the required criteria for a fair value hedge, along with the gain or loss on the hedged asset or liability that is attributable to the hedged risk, are recorded in current period earnings. Changes in the fair value of a derivative and foreign currency debt that are designated as and meet all the required criteria for a hedge of a net investment are recorded as translation adjustments in AOCL. Changes in the fair value of a derivative that is not designated as a hedge are recorded immediately in earnings. We formally document the relationships between hedging instruments and hedged items, as well as our risk management objective and strategy for undertaking various hedge transactions. This process includes relating derivatives that are designated as fair value or cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. We also formally assess, at the inception of the hedge and on an ongoing basis, whether derivatives are highly effective in offsetting changes in fair values or cash flows of the hedged item. If it is determined that a derivative is not highly effective as a hedge, or if a derivative ceases to be a highly effective hedge, we will discontinue hedge accounting with respect to that derivative prospectively.
Foreign Currency	Foreign Currency Since we do business in many foreign countries, fluctuations in currency exchange rates affect our financial position and results of operations. In most of our foreign operations, the local currency is considered the functional currency. Foreign subsidiaries translate their assets and liabilities into U.S. dollars at current exchange rates in effect at the end of the fiscal period. The gains or losses that result from this process are shown as translation adjustments in AOCI in the equity section of the balance sheet. The revenue and expense accounts of foreign subsidiaries are translated into U.S. dollars at the average exchange rates that prevail during the period. Therefore, the U.S. dollar value of these items on the income statement fluctuates from period to period, depending on the value of the dollar against foreign currencies. Some transactions are made in currencies different from an entity’s functional currency. Gains and losses from these foreign currency transactions are generally included in other income (expense), net on our consolidated income statements as they occur.
Environmental Expenditures	Environmental Expenditures Accruals for environmental loss contingencies are recorded when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. Remediation costs are capitalized if the costs improve the Company’s property as compared with the condition of the property when originally constructed or acquired, or if the costs prevent environmental contamination from future operations. We expense environmental costs related to existing conditions resulting from past or current operations and from which no current or future benefit is discernible. The amounts charged to income from continuing operations related to environmental matters totaled $27.0 in fiscal 2016, $28.3 in 2015, and $35.1 in 2014. The measurement of environmental liabilities is based on an evaluation of currently available information with respect to each individual site and considers factors such as existing technology, presently enacted laws and regulations, and prior experience in remediation of contaminated sites. An environmental liability related to cleanup of a contaminated site might include, for example, a provision for one or more of the following types of costs: site investigation and testing costs, cleanup costs, costs related to soil and water contamination resulting from tank ruptures, post-remediation monitoring costs, and outside legal fees. These liabilities include costs related to other potentially responsible parties to the extent that we have reason to believe such parties will not fully pay their proportionate share. They do not take into account any claims for recoveries from insurance or other parties and are not discounted. As assessments and remediation progress at individual sites, the amount of projected cost is reviewed, and the liability is adjusted to reflect additional technical and legal information that becomes available. Management has an established process in place to identify and monitor the Company’s environmental exposures. An environmental accrual analysis is prepared and maintained that lists all environmental loss contingencies, even where an accrual has not been established. This analysis assists in monitoring the Company’s overall environmental exposure and serves as a tool to facilitate ongoing communication among the Company’s technical experts, environmental managers, environmental lawyers, and financial management to ensure that required accruals are recorded and potential exposures disclosed. Given inherent uncertainties in evaluating environmental exposures, actual costs to be incurred at identified sites in future periods may vary from the estimates. Refer to Note 17, Commitments and Contingencies, for additional information on the Company’s environmental loss contingencies. The accruals for environmental liabilities are reflected in the consolidated balance sheets, primarily as part of other noncurrent liabilities.
Litigation	Litigation In the normal course of business, we are involved in legal proceedings. We accrue a liability for such matters when it is probable that a liability has been incurred and the amount can be reasonably estimated. When only a range of possible loss can be established, the most probable amount in the range is accrued. If no amount within this range is a better estimate than any other amount within the range, the minimum amount in the range is accrued. The accrual for a litigation loss contingency includes estimates of potential damages and other directly related costs expected to be incurred. Refer to Note 17, Commitments and Contingencies, for additional information on our current legal proceedings.
Share-Based Compensation	Share-Based Compensation We have various share-based compensation programs, which include deferred stock units, stock options, and restricted stock. We expense the grant-date fair value of these awards over the vesting period during which employees perform related services. Expense recognition is accelerated for retirement-eligible individuals who would meet the requirements for vesting of awards upon their retirement. We utilize a Black Scholes model to value stock option awards. The grant-date fair value of the deferred stock units tied to a market condition is estimated using a Monte Carlo simulation model.
Income Taxes	Income Taxes We account for income taxes under the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the tax effects of temporary differences between the financial reporting and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to be recovered or settled. A principal temporary difference results from the excess of tax depreciation over book depreciation because accelerated methods of depreciation and shorter useful lives are used for income tax purposes. The cumulative impact of a change in tax rates or regulations is included in income tax expense in the period that includes the enactment date. We recognize deferred tax assets net of existing valuation allowance to the extent we believe that these assets are more likely than not to be realized considering all available evidence. A tax benefit for an uncertain tax position is recognized when it is more likely than not that the position will be sustained upon examination based on its technical merits. This position is measured as the largest amount of tax benefit that is greater than 50% likely of being realized. Interest and penalties related to unrecognized tax benefits are recognized as a component of income tax expense. For additional information regarding our income taxes, refer to Note 23, Income Taxes.
Cash and Cash Items	Cash and Cash Items Cash and cash items include cash, time deposits, and certificates of deposit acquired with an original maturity of three months or less.
Trade Receivables,net	Trade Receivables, net Trade receivables comprise amounts owed to us through our operating activities and are presented net of allowances for doubtful accounts. The allowances for doubtful accounts represent estimated uncollectible receivables associated with potential customer defaults on contractual obligations. A provision for customer defaults is made on a general formula basis when it is determined that the risk of some default is probable and estimable but cannot yet be associated with specific customers. The assessment of the likelihood of customer defaults is based on various factors, including the length of time the receivables are past due, historical experience, and existing economic conditions. The allowance also includes amounts for certain customers where a risk of default has been specifically identified, considering factors such as the financial condition of the customer and customer disputes over contractual terms and conditions. Allowance for doubtful accounts were $56.8 and $48.5 as of fiscal year end 30 September 2016 and 2015, respectively. Provisions to the allowance for doubtful accounts charged against income were $22.8, $26.3 and $16.4 in 2016, 2015, and 2014, respectively.
Inventories	Inventories Inventories are stated at the lower of cost or market. We write down our inventories for estimated obsolescence or unmarketable inventory based upon assumptions about future demand and market conditions. We utilize the last-in, first-out (LIFO) method for determining the cost of inventories in the United States for the Industrial Gases and the Materials Technologies segments. Inventories for these segments outside of the United States are accounted for on the first-in, first-out (FIFO) method, as the LIFO method is not generally permitted in the foreign jurisdictions where these segments operate. The inventories of the Industrial Gases – Global and the Corporate and other segments on a worldwide basis, as well as all other inventories, are accounted for on the FIFO basis. At the business segment level, inventories are recorded at FIFO and the LIFO pool adjustments are not allocated to the business segments.
Equity Investments	Equity Investments The equity method of accounting is used when we exercise significant influence but do not have operating control, generally assumed to be 20% –50% ownership. Under the equity method, original investments are recorded at cost and adjusted by our share of undistributed earnings or losses of these companies. Equity investments are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the investment may not be recoverable.
Plant and Equipment	Plant and Equipment Plant and equipment is stated at cost less accumulated depreciation. Construction costs, labor, and applicable overhead related to installations are capitalized. Expenditures for additions and improvements that extend the lives or increase the capacity of plant assets are capitalized. The costs of maintenance and repairs of plant and equipment are charged to expense as incurred. Fully depreciated assets are retained in the gross plant and equipment and accumulated depreciation accounts until they are removed from service. In the case of disposals, assets and related depreciation are removed from the accounts, and the net amounts, less proceeds from disposal, are included in income. Refer to Note 9, Plant and Equipment, net, for further detail.
Computer Software	Computer Software We capitalize costs incurred to purchase or develop software for internal use. Capitalized costs include purchased computer software packages, payments to vendors/consultants for development and implementation or modification to a purchased package to meet our requirements, payroll and related costs for employees directly involved in development, and interest incurred while software is being developed. Capitalized computer software costs are included in the balance sheet classification plant and equipment, net and depreciated over the estimated useful life of the software, generally a period of three to ten years.
Capitalized Interest	Capitalized Interest As we build new plant and equipment, we include in the cost of these assets a portion of the interest payments we make during the year. The amount of capitalized interest was $32.9, $49.1, and $33.0 in 2016, 2015, and 2014, respectively.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets Long-lived assets are grouped for impairment testing at the lowest level for which there are identifiable cash flows that are largely independent of the cash flows of other assets and liabilities and are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset group may not be recoverable. We assess recoverability by comparing the carrying amount of the asset group to estimated undiscounted future cash flows expected to be generated by the asset group. If an asset group is considered impaired, the impairment loss to be recognized is measured as the amount by which the asset group’s carrying amount exceeds its fair value. Long-lived assets to be sold are reported at the lower of carrying amount or fair value less cost to sell.
Asset Retirement Obligations	Asset Retirement Obligations The fair value of a liability for an asset retirement obligation is recognized in the period in which it is incurred. The fair value of the liability is measured using discounted estimated cash flows and is adjusted to its present value in subsequent periods as accretion expense is recorded. The corresponding asset retirement costs are capitalized as part of the carrying amount of the related long-lived asset and depreciated over the asset’s useful life. Our asset retirement obligations are primarily associated with Industrial Gases on-site long-term supply contracts, under which we have built a facility on land owned by the customer and are obligated to remove the facility at the end of the contract term. Our asset retirement obligations totaled $119.9 and $109.4 at 30 September 2016 and 2015, respectively.
Goodwill	Goodwill Business combinations are accounted for using the acquisition method. The purchase price is allocated to the assets acquired and liabilities assumed based on their estimated fair market values. Any excess purchase price over the fair market value of the net assets acquired, including identified intangibles, is recorded as goodwill. Preliminary purchase price allocations are made at the date of acquisition and finalized when information needed to affirm underlying estimates is obtained, within a maximum allocation period of one year. Goodwill is subject to impairment testing at least annually. In addition, goodwill is tested more frequently if a change in circumstances or the occurrence of events indicates that potential impairment exists. Refer to Note 10, Goodwill, for further detail.
Intangible Assets	Intangible Assets Intangible assets with determinable lives primarily consist of customer relationships, purchased patents and technology, and land use rights. The cost of intangible assets with determinable lives is amortized on a straight-line basis over the estimated period of economic benefit. No residual value is estimated for these intangible assets. Indefinite-lived intangible assets consist of trade names and trademarks. Indefinite-lived intangibles are subject to impairment testing at least annually. In addition, intangible assets are tested more frequently if a change in circumstances or the occurrence of events indicates that potential impairment exists. Customer relationships are generally amortized over periods of five to twenty-five years. Purchased patents and technology and other are generally amortized over periods of five to twenty years. Land use rights, which are included in other intangibles, are generally amortized over a period of fifty years. Amortizable lives are adjusted whenever there is a change in the estimated period of economic benefit. Refer to Note 11, Intangible Assets, for further detail.
Retirement Benefits	Retirement Benefits The cost of pension benefits is recognized over the employees’ service period. We are required to use actuarial methods and assumptions in the valuation of defined benefit obligations and the determination of expense. Differences between actual and expected results or changes in the value of obligations and plan assets are not recognized in earnings as they occur but, rather, systematically and gradually over subsequent periods. Refer to Note 16, Retirement Benefits, for disclosures related to our pension and other postretirement benefits.

Discontinued Operations (Tables)

12 Months Ended

Sep. 30, 2016

Discontinued Operations [Abstract]

Schedule of Operating Results and Assets and Liabilities of Discontinued Operations

The following table summarizes the carrying amount of the accrual for our actions to dispose of the EfW business at 30 September
2016, which is included in current liabilities of discontinued operations:
		Asset		Contract
		Impairment		Actions/Other		Total
	Loss on disposal of business	$	913.5	$	32.2	$	945.7
	Noncash expenses		(913.5)		-		(913.5)
	Cash expenditures		-		(18.6)		(18.6)
	Currency translation adjustment		-		(1.4)		(1.4)
	30 September 2016	$	-	$	12.2	$	12.2

The results of EfW discontinued operations are summarized below:

		2016		2015		2014

Loss before taxes	$	(41.0)	$	(9.2)	$	(10.9)
Income tax provision		3.4		2.4		3.4
Loss from operations of discontinued operations		(37.6)		(6.8)		(7.5)
Loss on disposal, net of tax		(846.6)		-		-
Loss from Discontinued Operations, net of tax	$	(884.2)	$	(6.8)	$	(7.5)

Assets and liabilities of the EfW discontinued operations consist of the following:
			30 September		30 September
			2016		2015
	Plant and equipment	$	18.2	$	-
	Other current assets		1.2		1.8
	Total Current Assets	$	19.4	$	1.8

	Plant and equipment	$	-	$	891.8
	Total Noncurrent Assets	$	-	$	891.8

	Payables and accrued liabilities	$	19.0	$	17.0
	Total Current Liabilities	$	19.0	$	17.0

	Other noncurrent liabilities	$	-	$	2.5
	Total Noncurrent Liabilities	$	-	$	2.5

The results of the Homecare discontinued operations are summarized below:

		2016		2015		2014
Sales	$	-	$	-	$	8.5

Income before taxes	$	-	$	-	$	.7
Income tax provision		-		-		-
Income from operations of discontinued operations		-		-		.7
Gain on sale of business, net of tax		-		-		3.9
Income (Loss) from Discontinued Operations, net of tax	$	-	$	-	$	4.6

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

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Business Restructuring and Cost Reduction Actions [Abstract]

Business Restructuring and Cost Reduction Actions (Tables)

12 Months Ended

Sep. 30, 2016

Summary of Carrying Amount of Accrual for Business Restructuring and Cost Reduction Actions [Table Text Block]


	Severance and
	Other Benefits
2016 Charge	$	33.9
Amount reflected in pension liability		(.9)
Cash expenditures		(20.4)
Currency translation adjustment		.3
30 September 2016	$	12.9

The following table summarizes the carrying amount of the accrual for the business realignment and reorganization at
30 September 2016:
	Severance and		Asset
	Other Benefits		Actions/Other		Total
2014 Charge	$	12.7	$	-	$	12.7
Cash expenditures		(2.2)		-		(2.2)
30 September 2014	$	10.5	$	-	$	10.5
2015 Charge		151.9		55.8		207.7
Amount reflected in pension liability		(14.0)		-		(14.0)
Noncash expenses		-		(47.4)		(47.4)
Cash expenditures		(113.5)		(1.2)		(114.7)
Currency translation adjustment		(.4)		-		(.4)
30 September 2015	$	34.5	$	7.2	$	41.7
Cash expenditures		(34.1)		(3.8)		(37.9)
Currency translation adjustment		(.4)		-		(.4)
30 September 2016	$	-	$	3.4	$	3.4

Inventories (Tables)

12 Months Ended

Sep. 30, 2016

Inventories [Abstract]

Schedule of Inventory

30 September		2016		2015
Inventories at FIFO cost
Finished goods	$	456.7	$	494.9
Work in process		38.2		34.4
Raw materials, supplies and other		204.0		229.3
		698.9		758.6
Less: Excess of FIFO cost over LIFO cost		(79.0)		(100.8)
Inventories	$	619.9	$	657.8

Summarized Financial Information of Equity Affiliates (Tables)

12 Months Ended

Sep. 30, 2016

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments [Table Text Block]

Abdullah Hashim Industrial Gases & Equipment Co., Ltd. (25%);		INOX Air Products Limited (50%);
Air Products South Africa (Proprietary) Limited (50%);		Jazan Gas Projects Company (25%);
Bangkok Cogeneration Company Limited (49%);		Kulim Industrial Gases Sdn. Bhd. (50%);
Bangkok Industrial Gases Co., Ltd. (49%);		Sapio Produzione Idrogeno Ossigeno S.r.l. (49%);
Chengdu Air & Gas Products Ltd. (50%);		Tecnologia en Nitrogeno S. de R.L. de C.V. (50%);
Helap S.A. (50%);		Tyczka Industrie-Gases GmbH (50%);
High-Tech Gases (Beijing) Co., Ltd. (50%);		WuXi Hi-Tech Gas Co., Ltd. (50%);
INFRA Group (40%);		and principally, other industrial gas producers.

30 September				2016		2015
Current assets			$	1,449.8	$	1,296.4
Noncurrent assets				3,063.9		2,607.4
Current liabilities				699.2		654.0
Noncurrent liabilities				1,540.6		988.0

Year Ended 30 September		2016		2015		2014
Net sales	$	2,308.5	$	2,604.3	$	2,808.7
Sales less cost of sales		882.6		949.2		984.7
Operating income		487.8		524.0		542.9
Net income		338.0		351.0		359.5

Plant and Equipment, net (Tables)

12 Months Ended

Sep. 30, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

		Useful Life
30 September		in years		2016		2015
Land			$	232.9	$	226.2
Buildings		30		1,119.8		1,080.2
Production facilities
	Industrial Gases – Regional^(A)	10 to 20		12,372.1		11,873.8
	Materials Technologies	10 to 15		859.2		902.7
	Other	5 to 20		36.0		43.0
	Total production facilities			13,267.3		12,819.5
Distribution and other machinery and equipment^(B)		5 to 25		4,042.1		3,963.1
Construction in progress				1,528.0		1,373.8
Plant and equipment, at cost				20,190.1		19,462.8
Less: accumulated depreciation				11,337.4		10,717.7
Plant and equipment, net			$	8,852.7	$	8,745.1

^(A)	Depreciable lives of production facilities related to long-term customer supply contracts are matched to the contract lives.
^(B)	The depreciable lives for various types of distribution equipment are 10 to 25 years for cylinders, depending on the nature and properties of the
	product; 20 years for tanks; 7.5 years for customer stations; and 5 to 15 years for tractors and trailers.

Goodwill (Tables)

12 Months Ended

Sep. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]


	Industrial		Industrial		Industrial		Industrial
	Gases–		Gases–		Gases–		Gases–		Materials
	Americas		EMEA		Asia		Global		Technologies			Total
Goodwill, net at 30 September 2014	$	327.2	$	433.3	$	140.0	$	21.4	$	315.4	$	1,237.3
Acquisitions and adjustments		2.2		3.2		-		-		-		5.4
Currency translation and other		(31.8)		(50.0)		(6.9)		(1.5)		(21.2)		(111.4)
Goodwill, net at 30 September 2015	$	297.6	$	386.5	$	133.1	$	19.9	$	294.2	$	1,131.3
Currency translation and other		11.5		(5.9)		2.1		.3		10.9		18.9
Goodwill, net at 30 September 2016	$	309.1	$	380.6	$	135.2	$	20.2	$	305.1	$	1,150.2



30 September		2016		2015		2014
Goodwill, gross	$	1,408.8	$	1,375.0	$	1,522.1
Accumulated impairment losses ^(A)		(258.6)		(243.7)		(284.8)
Goodwill, net	$	1,150.2	$	1,131.3	$	1,237.3

^(A) Amount is attributable to the Industrial Gases – Americas segment and includes currency translation of $46.6, $61.5, and $20.4
as of 30 September 2016, 2015, and 2014, respectively.

Intangibles (Tables)

12 Months Ended

Sep. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule Finite and Indefinite Lived Intangible Assets [Table Text Block]

	30 September 2016						30 September 2015
				Accumulated						Accumulated
				Amortization/						Amortization/
		Gross		Impairment		Net		Gross		Impairment		Net
Customer relationships	$	517.4	$	(155.2)	$	362.2	$	507.4	$	(129.6)	$	377.8
Patents and technology		76.6		(57.9)		18.7		76.9		(53.3)		23.6
Other		81.7		(37.3)		44.4		81.8		(35.0)		46.8
Total finite-lived intangibles		675.7		(250.4)		425.3		666.1		(217.9)		448.2
Trade names and trademarks, indefinite-lived		66.2		(3.5)		62.7		63.4		(3.3)		60.1
Total Intangible Assets	$	741.9	$	(253.9)	$	488.0	$	729.5	$	(221.2)	$	508.3

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Projected annual amortization expense for intangible assets as of 30 September 2016 is as follows:

2017	$	31.2
2018		29.5
2019		27.9
2020		27.5
2021		26.1
Thereafter		283.1
Total	$	425.3

Leases (Tables)

12 Months Ended

Sep. 30, 2016

Leases [Abstract]

Schedule Of Future Minimum Lease Payments For Capital Leases [Table Text Block]

		Capital
		Leases
2017	$	2.0
2018		1.8
2019		1.6
2020		1.6
2021		2.7
Thereafter		21.3
Total	$	31.0

Schedule Of Future Minimum Rental Payments For Operating Leases [Table Text Block]

		Operating
		Leases
2017	$	70.5
2018		62.5
2019		49.9
2020		38.4
2021		31.6
Thereafter		102.2
Total	$	355.1

Schedule of Minimum Lease Payments to be Collected [Table Text Block]

30 September		2016		2015
Gross minimum lease payments receivable	$	2,072.6	$	2,322.5
Unearned interest income		(762.7)		(888.1)
Lease Receivables, net	$	1,309.9	$	1,434.4

2017	$	182.7
2018		181.4
2019		175.9
2020		171.1
2021		165.1
Thereafter		1,196.4
Total	$	2,072.6

Financial Instruments (Tables)

12 Months Ended

Sep. 30, 2016

Financial Instruments [Abstract]

Schedule Of Notional Amounts Of Outstanding Derivatives

		30 September 2016			30 September 2015
				Years			Years
			US$	Average		US$	Average
			Notional	Maturity		Notional	Maturity
Forward Exchange Contracts
	Cash flow hedges	$	4,130.3	.5	$	4,543.8	.5
	Net investment hedges		968.2	2.7		491.3	4.0
	Not designated		2,850.5	.4		863.3	.7
Total Forward Exchange Contracts		$	7,949.0	.7	$	5,898.4	.9

The following table summarizes our outstanding interest rate management contracts and cross currency interest rate swaps:

			30 September 2016					30 September 2015
						Average	Years				Average	Years
			US$			Receive	Average	US$			Receive	Average
			Notional		Pay %	%	Maturity	Notional		Pay %	%	Maturity
	Interest rate swaps (fair value hedge)		$	600.0	LIBOR	2.28%	2.3	$	600.0	LIBOR	2.77%	3.3
	Cross currency interest rate swaps
		(net investment hedge)	$	517.7	3.24%	2.43%	2.6	$	609.9	4.06%	2.61%	3.2
	Cross currency interest rate swaps
		(cash flow hedge)	$	1,088.9	4.77%	2.72%	3.3	$	1,055.2	4.29%	2.63%	3.9
	Cross currency interest rate swaps
		(not designated)	$	27.4	3.62%	.81%	1.8	$	12.9	3.12%	3.08%	4.1

Fair Value of Derivative Instruments

The table below summarizes the fair value and balance sheet location of our outstanding derivatives:

			Balance Sheet		30 September			Balance Sheet		30 September
			Location	2016		2015		Location	2016		2015
	Derivatives Designated as
		Hedging Instruments:

	Forward exchange contracts		Other receivables	$	72.3	$	52.1	Accrued liabilities	$	44.0	$	110.7

	Interest rate management contracts		Other receivables		19.9		17.6	Accrued liabilities		-		-

			Other noncurrent					Other noncurrent
	Forward exchange contracts		assets		44.4		68.5	liabilities		9.1		9.2

			Other noncurrent					Other noncurrent
	Interest rate management contracts		assets		160.0		153.4	liabilities		12.0		.8
	Total Derivatives Designated as
		Hedging Instruments		$	296.6	$	291.6		$	65.1	$	120.7
	Derivatives Not Designated as
		Hedging Instruments:
	Forward exchange contracts		Other receivables	$	78.7	$	3.2	Accrued liabilities	$	30.0	$	3.9


			Other noncurrent					Other noncurrent
	Forward exchange contracts		assets		-		23.3	liabilities		-		.6
			Other noncurrent					Other noncurrent
	Interest rate management contracts		assets		-		.8	liabilities		.7		-
	Total Derivatives Not Designated
		as Hedging Instruments		$	78.7	$	27.3		$	30.7	$	4.5
	Total Derivatives			$	375.3	$	318.9		$	95.8	$	125.2

Schedule of Gain/Loss Related to Derivative Instruments

The table below summarizes the gain or loss related to our cash flow hedges, fair value hedges, net investment hedges, and derivatives
not designated as hedging instruments:

			Year Ended 30 September
			Forward				Foreign Currency
			Exchange Contracts				Debt				Other ^(A)				Total
			2016		2015		2016		2015		2016		2015		2016		2015
	Cash Flow Hedges, net of tax:
	Net gain (loss) recognized in OCI
		(effective portion)	$	10.5	$	(44.9)	$	-	$	-	$	3.2	$	9.9	$	13.7	$	(35.0)
	Net (gain) loss reclassified from OCI
		to sales/cost of sales (effective portion)		.2		.6		-		-		-		-		.2		.6
	Net (gain) loss reclassified from OCI to other
		income (expense), net (effective portion)		(25.7)		35.6		-		-		(20.3)		(20.2)		(46.0)		15.4
	Net (gain) loss reclassified from OCI
		to interest expense (effective portion)		6.7		.7		-		-		3.3		2.6		10.0		3.3
	Net (gain) loss reclassified from OCI to other
		income (expense), net (ineffective portion)		(.2)		1.5		-		-		-		-		(.2)		1.5
	Fair Value Hedges:
	Net gain (loss) recognized in interest expense^(B)		$	-	$	-	$	-	$	-	$	(8.8)	$	9.9	$	(8.8)	$	9.9
	Net Investment Hedges, net of tax:
	Net gain (loss) recognized in OCI		$	17.4	$	60.1	$	(9.6)	$	91.4	$	35.0	$	49.5	$	42.8	$	201.0
	Derivatives Not Designated as Hedging
	Instruments:
	Net gain (loss) recognized in other income
		(expense), net^(C)	$	(.8)	$	(7.3)	$	-	$	-	$	(1.6)	$	.6	$	(2.4)	$	(6.7)

	^(A) Other includes the impact on other comprehensive income (OCI) and earnings primarily related to interest rate and cross currency
	interest rate swaps.
	^(B) The impact of fair value hedges noted above was largely offset by recognized gains and losses resulting from the impact
	of changes in related interest rates on outstanding debt.
	^(C) The impact of the non-designated hedges noted above was largely offset by recognized gains and losses resulting from
	the impact of changes in exchange rates on assets and liabilities denominated in nonfunctional currencies.

Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2016

Fair Value Measurements [Abstract]

Schedule of Carrying Value and Fair Values of Financial Instruments

The carrying values and fair values of financial instruments were as follows:

			30 September 2016				30 September 2015
			Carrying Value		Fair Value		Carrying Value		Fair Value
	Assets
	Derivatives
		Forward exchange contracts	$	195.4	$	195.4	$	147.1	$	147.1
		Interest rate management contracts		179.9		179.9		171.8		171.8
	Liabilities
	Derivatives
		Forward exchange contracts	$	83.1	$	83.1	$	124.4	$	124.4
		Interest rate management contracts		12.7		12.7		.8		.8
	Long-term debt, including current portion			5,289.4		5,467.2		4,384.7		4,645.7

Schedule of Fair Value of Assets and Liabilities Measured On Recurring Basis

The following table summarizes assets and liabilities measured at fair value on a recurring basis in the consolidated balance sheets:

			30 September 2016								30 September 2015
			Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
	Assets at Fair Value
	Derivatives
		Forward exchange contracts	$	195.4	$	-	$	195.4	$	-	$	147.1	$	-	$	147.1	$	-
		Interest rate management contracts		179.9		-		179.9		-		171.8		-		171.8		-
	Total Assets at Fair Value		$	375.3	$	-	$	375.3	$	-	$	318.9	$	-	$	318.9	$	-
	Liabilities at Fair Value
	Derivatives
		Forward exchange contracts	$	83.1	$	-	$	83.1	$	-	$	124.4	$	-	$	124.4	$	-
		Interest rate management contracts		12.7		-		12.7		-		.8		-		.8		-
	Total Liabilities at Fair Value		$	95.8	$	-	$	95.8	$	-	$	125.2	$	-	$	125.2	$	-

Schedule of Non-Recurring Fair Value Measurement of Long-Lived Assets Held For Sale

The following is a tabular presentation of nonrecurring fair value measurements along with the level within the fair value hierarchy in
which the fair value measurement in its entirety falls:

	31 March 2016									2016
		Total		Level 1		Level 2		Level 3		Loss
Plant and Equipment—Discontinued operations ^(A)	$	20.0	$	-	$	-	$	20.0	$	913.5


^(A)As a result of our exit from the Energy-from-Waste business, we assessed the recoverability of assets capable of being marketed
on a secondary equipment market using an orderly liquidation valuation resulting in an impairment loss for the difference between
the orderly liquidation value and net book value of the assets as of 31 March 2016. There have been no significant changes in the
estimated net realizable value as of 30 September 2016. For additional information, see Note 4, Discontinued Operations.

Debt (Tables)

12 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

Schedule of Debt [Table Text Block]

Total Debt

30 September		2016		2015
Short-term borrowings	$	935.8	$	1,494.3
Current portion of long-term debt		371.3		435.6
Long-term debt		4,918.1		3,949.1
Total Debt	$	6,225.2	$	5,879.0

Schedule of Short-term Debt [Table Text Block]

Short-term Borrowings

30 September		2016		2015
Bank obligations	$	133.1	$	234.3
Commercial paper		802.7		1,260.0
Total Short-term Borrowings	$	935.8	$	1,494.3

Schedule of Long-term Debt Instruments [Table Text Block]

Long-term Debt
30 September		Fiscal Year Maturities		2016		2015
Payable in U.S. Dollars
	Debentures
	8.75%	2021	$	18.4	$	18.4
	Medium-term Notes (weighted average rate)
	Series D 7.3%	2016		-		32.1
	Series E 7.6%	2026		17.2		17.2
	Senior Notes
	Note 2.0%	2016		-		350.0
	Note 1.2%	2018		400.0		400.0
	Note 4.375%	2019		400.0		400.0
	Note 3.0%	2022		400.0		400.0
	Note 2.75%	2023		400.0		400.0
	Note 3.35%	2024		400.0		400.0
	Versum Financing
	Senior Note 5.5%	2024		425.0		-
	Term Loan B 3.346%	2023		575.0		-
	Other (weighted average rate)
	Variable-rate industrial revenue bonds .68%	2035 to 2050		769.9		769.9
	Other 1.3%	2018 to 2019		25.7		35.0
Payable in Other Currencies
	Eurobonds 4.625%	2017		337.0		335.2
	Eurobonds 2.0%	2020		337.0		335.2
	Eurobonds 1.0%	2025		337.0		335.2
	Eurobonds .375%	2021		393.2		-
	Other 4.4%	2016 to 2022		53.0		161.0
Capital Lease Obligations
	United States 5.0%	2018		.5		.7
	Foreign 11.3%	2017 to 2036		9.7		1.1
Less: Unamortized Discount				(9.2)		(6.3)
Total Long-term Debt				5,289.4		4,384.7
Less: Current portion of long-term debt				(371.3)		(435.6)
Long-term Debt			$	4,918.1	$	3,949.1

Schedule of Maturities of Long-term Debt [Table Text Block]

Maturities of long-term debt in each of the next five years and beyond are as follows:

2017	$	371.3
2018		419.4
2019		406.6
2020		353.4
2021		416.9
Thereafter		3,321.8
Total	$	5,289.4

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02.22)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

Pension Plans, Defined Benefit [Member]

Retirement Benefits (Tables)

12 Months Ended

Sep. 30, 2016

Schedule of Net Periodic Benefit Cost

		2016				2015				2014
			U.S.	International			U.S.	International			U.S.	International
Service cost		$	36.5	$	24.3	$	42.2	$	31.3	$	42.6	$	36.0
Interest cost			110.7		44.3		124.7		57.8		130.7		67.2
Expected return on plan assets			(202.0)		(78.3)		(202.0)		(79.8)		(187.8)		(78.1)
Amortization
	Net actuarial loss		85.3		35.6		78.9		41.4		78.3		36.1
	Prior service cost		2.8		(.2)		2.8		-		2.9		.2
Settlements			5.1		1.3		18.9		2.3		4.8		.7
Curtailments			-		(1.1)		5.3		-		-		-
Special termination benefits			2.0		-		7.2		1.5		.2		.1
Other			(.3)		2.1		1.0		2.1		-		2.0
Net Periodic Benefit Cost		$	40.1	$	28.0	$	79.0	$	56.6	$	71.7	$	64.2

Weighted Average Assumptions Used In The Calculation Of Net Periodic Pension Cost And PBO

	2016				2015				2014
	U.S.		International		U.S.		International		U.S.		International
Discount rate^(A)	4.3	%	3.3	%	4.3	%	3.6	%	4.8	%	4.3	%
Expected return on plan assets	8.0	%	6.3	%	8.3	%	6.1	%	8.3	%	6.5	%
Rate of compensation increase	3.5	%	3.5	%	3.5	%	3.6	%	4.0	%	3.7	%

^(A)Effective in 2016, the Company began to measure the service cost and interest cost components of pension expense by applying spot rates along the yield curve to the relevant projected cash flows, as we believe this provides a better measurement of these costs. The 2016 discount rates used to measure the service cost and interest cost of our U.S. pension plans were 4.5% and 4.1%, respectively. The rates used to measure the service cost and interest cost of our major International pension plans were 3.4% and 3.2%, respectively. The previous method would have used a single discount rate for both service and interest costs. The Company has accounted for this as a change in accounting estimate and, accordingly has accounted for it on a prospective basis. This change does not affect the measurement of the total benefit obligation.

	2016				2015
	U.S.		International		U.S.		International
Discount rate	3.5	%	2.0	%	4.4	%	3.4	%
Rate of compensation increase	3.5	%	3.5	%	3.5	%	3.5	%

Schedule of Changes in Projected Benefit Obligations [Table Text Block]

	2016				2015
		U.S.	International			U.S.	International
Change in Projected Benefit Obligation
Obligation at beginning of year	$	3,139.9	$	1,647.9	$	3,002.9	$	1,735.7
Service cost		36.5		24.3		42.2		31.3
Interest cost		110.7		44.3		124.7		57.8
Amendments		1.2		-		1.2		(3.1)
Actuarial loss		380.2		376.4		130.4		30.0
Curtailments		(.4)		(1.2)		5.3		(5.1)
Settlement (gain) loss		5.4		(3.4)		6.7		(8.6)
Special termination benefits		2.0		-		7.2		1.5
Participant contributions		-		1.6		-		2.1
Benefits paid		(197.4)		(46.6)		(181.8)		(50.3)
Currency translation/other		(.4)		(193.7)		1.1		(143.4)
Obligation at End of Year	$	3,477.7	$	1,849.6	$	3,139.9	$	1,647.9

Schedule of Changes in Fair Value of Plan Assets [Table Text Block]

Change in Plan Assets
Fair value at beginning of year	$	2,613.6	$	1,302.8	$	2,746.2	$	1,368.4
Actual return on plan assets		275.2		273.2		(14.0)		25.9
Company contributions		13.9		65.4		63.1		74.4
Participant contributions		-		1.6		-		2.1
Benefits paid		(197.4)		(46.6)		(181.8)		(50.3)
Settlements		-		(3.4)		-		(8.6)
Currency translation/other		-		(181.9)		.1		(109.1)
Fair Value at End of Year	$	2,705.3	$	1,411.1	$	2,613.6	$	1,302.8
Funded Status at End of Year	$	(772.4)	$	(438.5)	$	(526.3)	$	(345.1)

Schedule of Amounts Recognized in Balance Sheet [Table Text Block]

Amounts Recognized
Noncurrent assets	$	-	$	-	$	4.0	$	.3
Accrued liabilities		(24.1)		-		(15.7)		-
Noncurrent liabilities		(748.3)		(438.5)		(514.6)		(345.4)
Net Amount Recognized	$	(772.4)	$	(438.5)	$	(526.3)	$	(345.1)

Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

The changes in plan assets and benefit obligation that have been recognized in other comprehensive income on a pretax basis
during 2016 and 2015 consist of the following:

	2016				2015
		U.S.	International			U.S.	International
Net actuarial loss arising during the period	$	311.8	$	172.1	$	351.8	$	79.4
Amortization of net actuarial loss		(90.4)		(36.5)		(97.8)		(43.3)
Prior service cost (credit) arising during the period		1.2		(.1)		1.2		(3.1)
Amortization of prior service cost		(2.8)		.2		(2.8)		-
Total	$	219.8	$	135.7	$	252.4	$	33.0

Schedule Of Components Recognized In Accumulated Other Comprehensive Income On Pretax Basis [Table Text Block]

The components recognized in accumulated other comprehensive loss on a pretax basis at 30 September consisted of:

	2016				2015
		U.S.	International			U.S.	International
Net actuarial loss	$	1,273.6	$	769.6	$	1,052.2	$	634.0
Prior service cost		8.5		(1.9)		10.1		(2.0)
Net transition liability		-		.4		-		.4
Total	$	1,282.1	$	768.1	$	1,062.3	$	632.4

Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block]

The amount of accumulated other comprehensive loss at 30 September 2016 that is expected to be recognized as a component of
net periodic pension cost during fiscal year 2017, excluding amounts that may be recognized through settlement losses, is as follows:

		U.S.	International
Net actuarial loss	$	103.0	$	58.3
Prior service cost		2.8		(.2)

Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]

The following table provides information on pension plans where the benefit liability exceeds the value of plan assets:

	30 September 2016				30 September 2015
	U.S.		International		U.S.		International
Pension Plans with PBO in Excess of Plan Assets:
PBO	$	3,477.7	$	1,849.6	$	2,917.1	$	1,644.5
Fair value of plan assets		2,705.3		1,411.1		2,386.7		1,299.1
Pension Plans with ABO in Excess of Plan Assets:
ABO	$	3,242.5	$	1,673.6	$	2,689.2	$	1,498.0
Fair value of plan assets		2,705.3		1,370.1		2,386.7		1,263.2

Schedule Of Target And Actual Asset Allocations By Category [Table Text Block]

	2016 Target Allocation		2016 Actual Allocation		2015 Actual Allocation
	U.S.	International	U.S.	International	U.S.	International
Asset Category
Equity securities	60–80%	55–67%	65%	60%	68%	59%
Debt securities	20–30%	32–43%	28%	38%	25%	40%
Real estate/other	0–10%	0–2%	7%	1%	7%	0%
Cash	—	—	0%	1%	0%	1%
Total			100%	100%	100%	100%

Schedule of Allocation of Plan Assets [Table Text Block]

The following table summarizes pension plan assets measured at fair value by asset class (see Note 14, Fair Value Measurements,
for definition of the levels):

			30 September 2016								30 September 2015
				Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
U.S. Qualified Pension
	Plans
Cash and cash equivalents			$	12.7	$	12.7	$	-	$	-	$	11.1	$	11.1	$	-	$	-
Equity securities				637.0		637.0		-		-		681.7		681.7		-		-
Equity mutual funds				300.2		300.2		-		-		480.1		480.1		-		-
Equity pooled funds				815.5		-		815.5		-		615.1		-		615.1		-
Fixed income:
	Bonds (government and
		corporate)		747.8		-		747.8		-		651.4		-		651.4		-
Real estate pooled funds				192.1		-		-		192.1		174.2		-		-		174.2
Total U.S. Qualified
	Pension Plans		$	2,705.3	$	949.9	$	1,563.3	$	192.1	$	2,613.6	$	1,172.9	$	1,266.5	$	174.2

International Pension
	Plans
Cash and cash equivalents			$	6.6	$	6.6	$	-	$	-	$	10.1	$	10.1	$	-	$	-
Equity pooled funds				854.8		-		854.8		-		766.9		-		766.9		-
Fixed income pooled funds				486.9		-		486.9		-		465.6		-		465.6		-
Other pooled funds				17.0		-		9.7		7.3		14.9		-		8.3		6.6
Insurance contracts				45.8		-		-		45.8		45.3		-		-		45.3
Total International
	Pension Plans		$	1,411.1	$	6.6	$	1,351.4	$	53.1	$	1,302.8	$	10.1	$	1,240.8	$	51.9

Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block]

The following table summarizes changes in fair value of the pension plan assets classified as Level 3, by asset class:

		Real Estate		Other		Insurance
		Pooled Funds		Pooled Funds		Contracts		Total
30 September 2014		$	150.2	$	9.3	$	59.7	$	219.2
Actual return on plan assets:
	Assets held at end of year		24.0		(.2)		(11.1)		12.7
	Assets sold during the period		-		.5		-		.5
Purchases, sales, and settlements, net			-		(3.0)		(3.3)		(6.3)
30 September 2015		$	174.2	$	6.6	$	45.3	$	226.1
Actual return on plan assets:
	Assets held at end of year		17.9		.1		3.2		21.2
	Assets sold during the period		-		.3		-		.3
Purchases, sales, and settlements, net			-		.3		(2.7)		(2.4)
30 September 2016		$	192.1	$	7.3	$	45.8	$	245.2

Schedule of Expected Benefit Payments [Table Text Block]

Projected benefit payments, which reflect expected future service, are as follows:

	U.S.		International
2017	$	150.3	$	45.7
2018		152.7		48.3
2019		157.2		50.2
2020		161.8		51.1
2021		166.7		54.3
2022–2026		909.6		306.9

Other Postretirement Benefits [Member]

Schedule of Net Periodic Benefit Cost

The cost of our other postretirement benefit plans includes the following components:

		2016		2015		2014
Service cost	$	2.2	$	2.8	$	3.3
Interest cost		2.0		2.2		2.3
Amortization of net actuarial loss		.7		.8		1.7
Net Periodic Postretirement Cost	$	4.9	$	5.8	$	7.3

Schedule of Changes in Projected Benefit Obligations [Table Text Block]

		2016		2015
Obligation at beginning of year	$	86.9	$	93.5
Service cost		2.2		2.8
Interest cost		2.0		2.2
Actuarial loss (gain)		7.5		(2.3)
Benefits paid		(12.3)		(9.3)
Obligation at End of Year	$	86.3	$	86.9

Schedule of Amounts Recognized in Balance Sheet [Table Text Block]

Amounts Recognized
Accrued liabilities	$	11.4	$	10.4
Noncurrent liabilities		74.9		76.5

Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

The changes in benefit obligation that have been recognized in other comprehensive income on a pretax basis during 2016 and 2015
for our other postretirement benefit plans consist of the following:

		2016		2015
Net actuarial loss (gain) arising during the period	$	7.5	$	(2.3)
Amortization of net actuarial loss		(.7)		(.8)
Total	$	6.8	$	(3.1)

Schedule of Expected Benefit Payments [Table Text Block]

Projected benefit payments are as follows:

2017	$	11.5
2018		11.0
2019		10.7
2020		10.2
2021		9.7
2022–2026		35.3

Commitments and Contingencies (Tables)

12 Months Ended

Sep. 30, 2016

Commitments And Contingencies [Abstract]

Schedule of Change in Asset Retirement Obligation [Table Text Block]

Changes to the carrying amount of our asset retirement obligations are as follows:

Balance at 30 September 2014	$	94.0
Additional accruals		17.6
Liabilities settled		(3.6)
Accretion expense		4.7
Currency translation adjustment		(3.3)
Balance at 30 September 2015	$	109.4
Additional accruals		10.4
Liabilities settled		(4.4)
Accretion expense		5.4
Currency translation adjustment		(.9)
Balance at 30 September 2016	$	119.9

These obligations are primarily reflected in other noncurrent liabilities on the consolidated balance sheets.

Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]

We are obligated to make future payments under unconditional purchase obligations as summarized below:

2017	$	942
2018		525
2019		307
2020		298
2021		276
Thereafter		2,983
Total	$	5,331

Capital Stock (Tables)

12 Months Ended

Sep. 30, 2016

Capital Stock [Abstract]

Schedule of Common Stock Outstanding Roll Forward [Table Text Block]

The following table reflects the changes in common shares:

Year ended 30 September	2016	2015	2014
Number of Common Shares Outstanding
Balance, beginning of year	215,359,113	213,538,144	211,179,257
Issuance of treasury shares for stock option and award plans	1,991,712	1,820,969	2,358,887
Balance, end of year	217,350,825	215,359,113	213,538,144

Share-Based Compensation (Tables)

12 Months Ended

Sep. 30, 2016

Share-Based Compensation [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

Share-based compensation cost recognized in the consolidated income statements is summarized below:

		2016		2015		2014
Before-Tax Share-Based Compensation Cost	$	37.6	$	45.7	$	44.0
Income tax benefit		(13.1)		(16.0)		(15.6)
After-Tax Share-Based Compensation Cost	$	24.5	$	29.7	$	28.4

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

Total before-tax share-based compensation cost by type of program was as follows:

		2016		2015		2014
Deferred stock units	$	29.9	$	28.8	$	20.2
Stock options		4.2		12.6		21.6
Restricted stock		3.5		4.3		2.2
Before-Tax Share-Based Compensation Cost	$	37.6	$	45.7	$	44.0

Schedule Of Share Based Payment Award Equity Instruments Other Than Options Valuation Assumptions [Table Text Block]

	2016		2015
Expected volatility	20.5	%	19.6	%
Risk-free interest rate	1.2	%	.9	%
Expected dividend yield	2.2	%	2.5	%

Schedule of Deferred Stock Units and Restricted Stock Activity [Table Text Block]

		Weighted Average
Deferred Stock Units	Shares (000)	Grant-Date Fair Value
Outstanding at 30 September 2015	1,056		$	102.01
Granted	284			136.37
Paid out	(299)			77.81
Forfeited/adjustments	(40)			90.83
Outstanding at 30 September 2016	1,001		$	119.44

		Weighted Average
Restricted Stock	Shares (000)	Grant-Date Fair Value
Outstanding at 30 September 2015	83		$	121.17
Granted	33			138.00
Vested	(31)			119.95
Outstanding at 30 September 2016	85		$	128.16

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2015		2014
Expected volatility	30.3	%	29.8%–31.1	%
Expected dividend yield	2.6	%	2.4–2.9	%
Expected life (in years)	7.5		6.5–8.4
Risk-free interest rate	2.2	%	2.0%–2.7	%

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of stock option activity is presented below:

			Weighted Average
Stock Options		Shares (000)	Exercise Price
Outstanding at 30 September 2015		5,725		$	87.35
Granted		-			-
Exercised		(1,783)			80.66
Forfeited		(26)			106.52
Outstanding at 30 September 2016		3,916		$	90.28
Exercisable at 30 September 2016		3,537		$	86.99

		Weighted Average
	Remaining Contractual		Aggregate Intrinsic
Stock Options		Terms (in years)			Value
Outstanding at 30 September 2016		5.0		$	235
Exercisable at 30 September 2016		4.7		$	224

Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Sep. 30, 2016

Accumulated Other Comprehensive Loss Net of Tax [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The table below summarizes changes in accumulated other comprehensive loss (AOCL), net of tax, attributable to Air Products:

		Net loss on derivatives qualifying as hedges		Foreign currency translation adjustments		Pension and postretirement benefits		Total
		Net loss on derivatives qualifying as hedges		Foreign currency translation adjustments		Pension and postretirement benefits		Total
Balance at 30 September 2013		$	(4.1)	$	(61.5)	$	(955.0)	$	(1,020.6)
	Other comprehensive income (loss) before reclassifications		(15.2)		(213.1)		(74.2)		(302.5)
	Amounts reclassified from AOCL		(9.1)		-		84.7		75.6
Net current period other comprehensive income (loss)		$	(24.3)	$	(213.1)	$	10.5	$	(226.9)
Amount attributable to noncontrolling interest			.1		(5.9)		.2		(5.6)
Balance at 30 September 2014		$	(28.5)	$	(268.7)	$	(944.7)	$	(1,241.9)
	Other comprehensive income (loss) before reclassifications		(35.0)		(699.3)		(278.5)		(1,012.8)
	Amounts reclassified from AOCL		20.8		-		97.0		117.8
Net current period other comprehensive income (loss)		$	(14.2)	$	(699.3)	$	(181.5)	$	(895.0)
Amount attributable to noncontrolling interest			.2		(11.5)		.3		(11.0)
Balance at 30 September 2015		$	(42.9)	$	(956.5)	$	(1,126.5)	$	(2,125.9)
	Other comprehensive income (loss) before reclassifications		13.7		9.9		(335.1)		(311.5)
	Amounts reclassified from AOCL		(36.0)		2.7		87.2		53.9
Net current period other comprehensive income (loss)		$	(22.3)	$	12.6	$	(247.9)	$	(257.6)
Amount attributable to noncontrolling interest			(.2)		5.4		(.4)		4.8
Balance at 30 September 2016		$	(65.0)	$	(949.3)	$	(1,374.0)	$	(2,388.3)

Schedule Of Reclassification Out Of Accumulated Other Comprehensive Income [Table Text Block]

The table below summarizes the reclassifications out of accumulated other comprehensive loss and the affected line item on the consolidated income statements:

			2016		2015		2014
(Gain) Loss on Cash Flow Hedges, net of tax
	Sales/Cost of sales	$	.2	$	.6	$	.7
	Other income (expense), net		(46.2)		16.9		(8.7)
	Interest expense		10.0		3.3		(1.1)
Total (Gain) Loss on Cash Flow Hedges, net of tax		$	(36.0)	$	20.8	$	(9.1)

Currency Translation Adjustment^(A)		$	2.7	$	―	$	―

Pension and Postretirement Benefits, net of tax^(B)		$	87.2	$	97.0	$	84.7
^(A)	The impact is reflected in Other income (expense), net and primarily relates to the sale of an equity affiliate in the first quarter of 2016.
	Refer to Note 8, Summarized Financial Information of Equity Affiliates.
^(B)	The components include items such as prior service cost amortization, actuarial loss amortization, and settlements and are reflected in net
	periodic benefit cost. Refer to Note 16, Retirement Benefits.

Noncontrolling Interests (Tables)

12 Months Ended

Sep. 30, 2016

Noncontrolling Interests

Redeemable Noncontrolling Interest Rollforward

The following is a summary of the changes in redeemable noncontrolling interest for the year ended 30 September 2015:


Balance at 30 September 2014	$	287.2
Net income		11.5
Dividends		(2.0)
Purchase of noncontrolling interest		(277.9)
Currency translation adjustment		(18.8)
Balance at 30 September 2015	$	-

Earnings per Share (Tables)

12 Months Ended

Sep. 30, 2016

Earnings Per Share

Schedule of Earnings Per Share, Basic and Diluted

The following table sets forth the computation of basic and diluted earnings per share (EPS):

30 September			2016		2015		2014
Numerator
Income from continuing operations		$	1,515.3	$	1,284.7	$	994.6
Income (Loss) from discontinued operations			(884.2)		(6.8)		(2.9)
Net Income Attributable to Air Products		$	631.1	$	1,277.9	$	991.7

Denominator (in millions)
Weighted average common shares — Basic			216.4		214.9		212.7
Effect of dilutive securities
	Employee stock option and other award plans		1.9		2.4		2.5
Weighted average common shares — Diluted			218.3		217.3		215.2

Basic EPS Attributable to Air Products
Income from continuing operations		$	7.00	$	5.98	$	4.68
Income (Loss) from discontinued operations			(4.08)		(.03)		(.02)
Net Income Attributable to Air Products		$	2.92	$	5.95	$	4.66

Diluted EPS Attributable to Air Products
Income from continuing operations		$	6.94	$	5.91	$	4.62
Income (Loss) from discontinued operations			(4.05)		(.03)		(.01)
Net Income Attributable to Air Products		$	2.89	$	5.88	$	4.61

Income Taxes (Tables)

12 Months Ended

Sep. 30, 2016

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

The following table summarizes the income of U.S. and foreign operations before taxes:
		2016		2015		2014
Income from Continuing Operations before Taxes
United States	$	897.5	$	742.0	$	562.2
Foreign		1,086.1		846.2		651.8
Income from equity affiliates		148.6		154.5		151.4
Total	$	2,132.2	$	1,742.7	$	1,365.4

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The following table shows the components of the provision for income taxes:

		2016		2015		2014
Current Tax Provision
Federal	$	237.9	$	177.1	$	19.3
State		29.1		16.9		13.0
Foreign		256.6		221.4		211.6
		523.6		415.4		243.9
Deferred Tax Provision
Federal		42.2		(3.5)		98.2
State		3.6		19.1		(2.7)
Foreign		17.1		(12.7)		30.0
		62.9		2.9		125.5
Income Tax Provision	$	586.5	$	418.3	$	369.4

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

A reconciliation of the differences between the United States federal statutory tax rate and the effective tax rate is as follows:

(Percent of income before taxes)	2016		2015		2014
U.S. federal statutory tax rate	35.0	%	35.0	%	35.0	%
State taxes, net of federal benefit	1.1		1.0		.5
Income from equity affiliates	(2.4)		(3.0)		(3.9)
Foreign tax differentials	(7.0)		(6.6)		(8.2)
U.S. taxes on foreign earnings	(2.3)		(1.6)		(1.7)
Domestic production activities	(.8)		(.9)		(.7)
Non-deductible goodwill impairment charge	―		―		8.0
Non-U.S. subsidiary tax election	―		―		(3.8)
Business separation costs	3.1		.2		―
Other^(A)	.8		(.1)		1.9
Effective Tax Rate	27.5	%	24.0	%	27.1	%

^(A) Other includes the impact of Chilean tax rate changes of 1.5% in 2014.

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The significant components of deferred tax assets and liabilities are as follows:

30 September		2016		2015
Gross Deferred Tax Assets
Retirement benefits and compensation accruals	$	537.9	$	468.7
Tax loss carryforwards		93.0		116.7
Tax credits and other tax carryforwards		56.0		43.8
Reserves and accruals		80.1		71.9
Partnership and other investments		4.8		6.2
Other		45.8		66.3
Valuation allowance		(155.2)		(103.6)
Deferred Tax Assets		662.4		670.0
Gross Deferred Tax Liabilities
Plant and equipment		1,034.8		1,124.6
Currency gains		46.4		65.7
Unremitted earnings of foreign entities		5.4		62.7
Intangible assets		134.1		135.6
Other		16.1		2.1
Deferred Tax Liabilities		1,236.8		1,390.7
Net Deferred Income Tax Liability	$	574.4	$	720.7

Schedule Of Deferred Tax Assets And Liabilities Included In Consolidated Financial Statements [Table Text Block]

Deferred tax assets and liabilities are included within the consolidated financial statements as follows:

		2016		2015
Deferred Tax Assets
Other noncurrent assets	$	192.7	$	82.7
Deferred Tax Liabilities
Deferred income taxes		767.1		803.4
Net Deferred Income Tax Liability	$	574.4	$	720.7

Summary of Income Tax Contingencies [Table Text Block]

A reconciliation of the beginning and ending amount of the unrecognized tax benefits is as follows:

Unrecognized Tax Benefits		2016		2015		2014
Balance at beginning of year	$	97.5	$	108.7	$	124.3
Additions for tax positions of the current year		15.0		6.9		8.1
Additions for tax positions of prior years		3.8		7.5		4.9
Reductions for tax positions of prior years		(.3)		(7.9)		(14.6)
Settlements		(5.6)		(.6)		―
Statute of limitations expiration		(3.0)		(11.2)		(14.0)
Foreign currency translation		(.5)		(5.9)		―
Balance at End of Year	$	106.9	$	97.5	$	108.7

Summary of Income Tax Examinations [Table Text Block]

We generally remain subject to examination in the following major tax jurisdictions for the years indicated below:

Major Tax Jurisdiction		Open Tax Years
North America
	United States	2011–2016
	Canada	2012–2016
Europe
	France	2013–2016
	Germany	2011–2016
	Netherlands	2011–2016
	Spain	2011–2016
	United Kingdom	2013–2016
Asia
	China	2010–2016
	Singapore	2010–2016
	South Korea	2010–2016
	Taiwan	2011–2016
Latin America
	Chile	2013–2016

Supplemental Information (Tables)

12 Months Ended

Sep. 30, 2016

Supplemental Information [Abstract]

Schedule Of Other Receivables And Other Current Assets [Table Text Block]

Other Receivables and Current Assets
30 September		2016		2015
Derivative instruments	$	170.9	$	72.9
Other receivables		197.5		167.6
Current capital lease receivables		88.2		84.2
Prepaid inventory		92.8		-
Other		6.2		18.8
	$	555.6	$	343.5

Schedule of Other Assets, Noncurrent [Table Text Block]

Other Noncurrent Assets
30 September		2016		2015
Derivative instruments	$	204.4	$	246.0
Other long-term receivables		20.6		21.4
Deferred financing cost, net		29.6		20.2
Prepaid tax		53.5		31.3
Deferred tax assets		192.7		82.7
Deposits		36.5		40.1
Other		200.0		206.9
	$	737.3	$	648.6

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

Payables and Accrued Liabilities
30 September		2016		2015
Trade creditors	$	676.1	$	621.9
Customer advances		376.1		195.3
Accrued payroll and employee benefits		262.6		272.9
Pension and postretirement benefits		35.5		26.1
Dividends payable		186.9		174.4
Outstanding payments in excess of certain cash balances		11.9		27.5
Accrued interest expense		47.9		52.9
Derivative instruments		74.0		114.6
Severance and other costs associated with business restructuring and cost reduction actions		16.3		41.7
Other		123.3		114.4
	$	1,810.6	$	1,641.7


Other Noncurrent Liabilities

Schedule Of Other Liabilities Noncurrent [Table Text Block]

Pension benefits	$	1,186.8	$	860.0
Postretirement benefits		74.9		76.5
Other employee benefits		108.3		106.7
Contingencies related to uncertain tax positions		95.6		91.1
Advance payments		43.8		135.1
Environmental liabilities		70.3		71.6
Derivative instruments		21.8		10.6
Asset retirement obligations		116.1		106.5
Obligation for future contribution to an equity affiliate		94.4		67.5
Other		61.4		28.4
	$	1,873.4	$	1,554.0

Schedule Of Other Income Expense Net [Table Text Block]

Other Income (Expense), Net
30 September		2016		2015		2014
Technology and royalty income	$	20.1	$	25.0	$	26.8
Interest income		6.2		4.6		9.4
Foreign exchange		(5.8)		(22.3)		(7.7)
Sale of assets and investments		10.1		37.1		12.5
Contract settlements		12.6		―		2.8
Other		14.9		2.9		9.0
	$	58.1	$	47.3	$	52.8

Summary by Quarter (Unaudited) (Tables)

12 Months Ended

Sep. 30, 2016

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

These tables summarize the unaudited results of operations for each quarter of 2016 and 2015:

2016			Q1		Q2			Q3			Q4			Total
Sales		$	2,355.8	$	2,271.2		$	2,434.4		$	2,463.0		$	9,524.4
Gross profit^(A)			760.1		752.2			795.1			814.3			3,121.7
Business separation costs^(B)			12.0		7.4			9.5			23.3			52.2
Business restructuring and cost reduction actions^(C)			-		8.6			14.2			11.1			33.9
Pension settlement loss^(D)			-		2.6			1.0			2.8			6.4
Operating income^(A)			510.6		513.3			535.1			547.0			2,106.0
Loss on extinguishment of debt^(E)			-		-			-			6.9			6.9
Income tax provision			135.9		132.5	^(F)		179.5	^(F)		138.6	^(F)		586.5	^(F)
Net income (loss)			372.0		(465.5)			354.1			400.9			661.5

Net income attributable to Air Products
Income from continuing operations			377.8		379.8			355.7			402.0			1,515.3
Loss from discontinued operations			(14.2)		(853.1)			(8.9)			(8.0)			(884.2)
Net income (loss) attributable to Air Products			363.6		(473.3)			346.8			394.0			631.1

Basic Earnings Per Common Share Attributable to Air Products
Income from continuing operations			1.75		1.76			1.64			1.85			7.00
Loss from discontinued operations			(.07)		(3.95)			(.04)			(.04)			(4.08)
Net income (loss) attributable to Air Products			1.68		(2.19)			1.60			1.81			2.92

Diluted Earnings Per Common Share Attributable to Air Products
Income from continuing operations			1.73		1.74			1.63			1.84			6.94
Loss from discontinued operations			(.06)		(3.91)			(.04)			(.04)			(4.05)
Net income (loss) attributable to Air Products			1.67		(2.17)			1.59			1.80			2.89

Dividends declared per common share			.81		.86			.86			.86			3.39

Market price per common share:	High		143.83		147.16			152.16			157.84
	Low		126.65		114.64			134.15			137.31

2015			Q1		Q2			Q3			Q4			Total
Sales		$	2,560.8	$	2,414.5		$	2,470.2		$	2,449.4		$	9,894.9
Gross profit			731.1		716.3			755.0			753.5			2,955.9
Business separation costs^(B)			-		-			-			7.5			7.5
Business restructuring and cost reduction actions^(C)			32.4		55.4			58.2			61.7			207.7
Pension settlement loss^(D)			-		12.6			1.6			7.0			21.2
Gain on previously held equity interest^(G)			17.9		-			-			-			17.9
Gain on land sales^(H)			-		-			-			33.6			33.6
Operating income			432.3		376.9			424.8			474.3			1,708.3
Loss on extinguishment of debt^(E)			-		-			-			16.6			16.6
Income tax provision			107.1		87.7			104.1			119.4			418.3
Net income			337.5		296.9			333.2			350.0			1,317.6

Net income attributable to Air Products
Income from continuing operations			326.3		291.9			320.5			346.0			1,284.7
Loss from discontinued operations			(1.7)		(1.9)			(1.7)			(1.5)			(6.8)
Net income attributable to Air Products			324.6		290.0			318.8			344.5			1,277.9

Basic Earnings Per Common Share Attributable to Air Products
Income from continuing operations			1.53		1.36			1.49			1.61			5.98
Loss from discontinued operations			(.01)		(.01)			(.01)			(.01)			(.03)
Net income attributable to Air Products			1.52		1.35			1.48			1.60			5.95

Diluted Earnings Per Common Share Attributable to Air Products
Income from continuing operations			1.51		1.34			1.48			1.59			5.91
Loss from discontinued operations			(.01)		(.01)			(.01)			(.01)			(.03)
Net income attributable to Air Products			1.50		1.33			1.47			1.58			5.88

Dividends declared per common share			.77		.81			.81			.81			3.20

Market price per common share:	High		149.61		158.20			153.93			148.56
	Low		118.20		137.07			136.69			123.66

^(A) Changes in estimates on projects accounted for under the percentage of completion method favorably impacted income by
approximately $20 in fiscal year 2016, primarily during the fourth quarter. For additional information, see Note 1, Major
Accounting Policies (Revenue Recognition).
^(B) For additional information, see Note 3, Materials Technologies Separation.
^(C) For additional information, see Note 5, Business Restructuring and Cost Reduction Actions.
^(D) For additional information, see Note 16, Retirement Benefits.
^(E) For additional information, see Note 15, Debt.
^(F) Includes income tax expense for tax costs associated with business separation. For additional information, see Note 3, Materials
Technologies Separation.
^(G) For additional information, see Note 6, Business Combination.
^(H) The gain is reflected on the consolidated income statements in “Other income (expense), net.” For additional information, see
Note 24, Supplemental Information.

Business Segment and Geographic Information (Tables)

12 Months Ended

Sep. 30, 2016

Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

Business Segment

		Industrial		Industrial		Industrial		Industrial
		Gases–		Gases–		Gases–		Gases–		Materials		Corporate		Segment
		Americas		EMEA		Asia		Global		Technologies		and other		Total

2016
Sales to external customers		$	3,343.6	$	1,700.3	$	1,716.1	$	498.8	$	2,019.5	$	246.1	$	9,524.4
Operating income (loss)			895.2		382.8		449.1		(21.3)		530.2		(37.5)		2,198.5
Depreciation and amortization			442.5		185.7		197.1		7.9		77.4		15.3		925.9
Equity affiliates' income (loss)			52.7		36.5		57.8		(.1)		1.7		-		148.6
Expenditures for long-lived assets			406.6		159.5		313.3		6.0		147.9		22.5		1,055.8
Investments in net assets of and
	advances to equity affiliates		250.6		580.5		442.5		10.0		4.5		-		1,288.1
Total assets			5,889.2		3,178.6		4,232.7		367.6		1,787.0		2,580.8		18,035.9


2015
Sales to external customers		$	3,693.9	$	1,864.9	$	1,637.5	$	286.8	$	2,087.1	$	324.7	$	9,894.9
Operating income (loss)			808.4		330.7		380.5		(51.6)		476.7		(51.5)		1,893.2
Depreciation and amortization			416.9		194.3		202.9		16.5		92.8		13.0		936.4
Equity affiliates' income (loss)			64.6		42.4		46.1		(.8)		2.2		-		154.5
Expenditures for long-lived assets			414.5		215.6		402.5		94.8		102.5		35.7		1,265.6
Investments in net assets of and
	advances to equity affiliates		249.7		564.1		421.7		14.3		15.9		-		1,265.7
Total assets			5,774.9		3,323.9		4,154.0		370.5		1,741.9		1,075.7		16,440.9


2014
Sales to external customers		$	4,078.5	$	2,150.7	$	1,527.0	$	296.0	$	2,064.6	$	322.2	$	10,439.0
Operating income (loss)			762.6		351.2		310.4		(57.3)		379.0		(78.5)		1,667.4
Depreciation and amortization			414.4		220.2		205.3		7.1		99.1		10.8		956.9
Equity affiliates' income			60.9		44.1		38.0		5.8		2.6		-		151.4
Expenditures for long-lived assets			484.2		239.1		430.3		77.7		64.2		67.2		1,362.7
Investments in net assets of and
	advances to equity affiliates		234.3		552.9		434.1		18.8		17.8		-		1,257.9
Total assets			6,240.7		3,521.0		4,045.6		389.4		1,835.7		1,044.5		17,076.9

Reconciliation of Segments to Consolidated Operating Income [Table Text Block]

Below is a reconciliation of segment total operating income to consolidated operating income:

Operating Income		2016		2015		2014
Segment total	$	2,198.5	$	1,893.2	$	1,667.4
Business separation costs		(52.2)		(7.5)		-
Business restructuring and cost reduction actions		(33.9)		(207.7)		(12.7)
Pension settlement loss		(6.4)		(21.2)		(5.5)
Goodwill and intangible asset impairment charge		-		-		(310.1)
Gain on previously held equity interest		-		17.9		-
Gain on land sales^(A)		-		33.6		-
Consolidated Total	$	2,106.0	$	1,708.3	$	1,339.1

^(A)Reflected on the consolidated income statements in "Other income (expense), net."

Reconciliation of Assets from Segment to Consolidated [Table TextBlock]

Below is a reconciliation of segment total assets to consolidated total assets:

Total Assets		2016		2015		2014
Segment total	$	18,035.9	$	16,440.9	$	17,076.9
Discontinued operations		19.4		893.6		591.4
Consolidated Total	$	18,055.3	$	17,334.5	$	17,668.3

Segments, Geographical Areas [Abstract]

Schedule Of Revenues From External Customers And Long Lived Assets By Geographical Areas [TableTextBlock]

Sales to External Customers		2016		2015		2014
United States	$	3,792.3	$	4,280.1	$	4,507.6
Canada		225.7		247.1		311.4
Europe		2,505.9		2,315.4		2,628.0
Asia, excluding China		1,382.7		1,395.2		1,389.4
China		1,176.2		1,129.1		981.0
Latin America		441.6		528.0		621.6
Total	$	9,524.4	$	9,894.9	$	10,439.0

Long-Lived Assets ^(A)		2016		2015		2014
United States	$	3,780.2	$	3,788.5	$	3,754.2
Canada		639.0		577.4		518.0
Europe		1,306.1		1,395.0		1,656.7
Asia, excluding China		1,056.5		914.2		989.9
China		1,721.9		1,732.7		1,582.7
Latin America		349.0		337.3		440.1
Total	$	8,852.7	$	8,745.1	$	8,941.6

^(A) Long-lived assets include plant and equipment, net.

Major Accounting Policies (Narratives) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Allowance for credit losses - capital leases	$ 0.0				$ 0.0				$ 0.0	$ 0.0
Environmental expenditures									27.0	28.3	$ 35.1
Allowance for Doubtful Accounts	56.8				48.5				56.8	48.5
Provision for Doubtful Accounts									22.8	26.3	16.4
Capitalized interest	32.9				49.1				32.9	49.1	33.0
Asset retirement obligations	119.9				109.4				$ 119.9	109.4	94.0
Period for reallocation of purchase price									1 year
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Residual Value	0.0								$ 0.0
Change in Accounting Estimate [Line Items]
Operating income (loss)	$ 547.0	$ 535.1	$ 513.3	$ 510.6	$ 474.3	$ 424.8	$ 376.9	$ 432.3	$ 2,106.0	$ 1,708.3	$ 1,339.1
Computer Software [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life									3 years
Computer Software [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life									10 years
Customer Relationships [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life									5 years
Customer Relationships [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life									25 years
Patents and Technology [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life									5 years
Patents and Technology [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life									20 years
Land Use Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life									50 years
Contracts accounted for under percentage of completion
Change in Accounting Estimate [Line Items]
Operating income (loss)									$ 20.0

New Accounting Guidance (Narratives) (Details) - Accounting Standards Update 2015-17 $ in Millions	12 Months Ended
	Sep. 30, 2015 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in noncurrent deferred tax assets	$ 13.7
Decrease in noncurrent deferred tax liabilities	$ 99.9

Business Separation (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions

3 Months Ended

12 Months Ended

Sep. 30, 2016

Jun. 30, 2016

Mar. 31, 2016

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

Mar. 31, 2015

Dec. 31, 2014

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

May 06, 2016

Definitive agreement expected cash consideration

$ 3,800.0

Business separation costs, before tax

$ 23.3

^[1]

$ 9.5

^[1]

$ 7.4

^[1]

$ 12.0

^[1]

$ 7.5

^[1]

$ 0.0

^[1]

$ 0.0

^[1]

$ 0.0

^[1]

$ 52.2

^[1]

$ 7.5

^[1]

$ 0.0

Business separation costs, after tax

$ 48.3

Business separation costs, per share

$ 0.22

Business separation additional income tax expense

$ 51.8

Business separation additional income tax expense, per share

$ 0.24

Income tax provision on repatriation of foreign earnings

$ 45.7

Foreign earnings repatriated

443.8

Versum Financing [Member]

6.9

^[2]

$ 0.0

^[2]

$ 0.0

^[2]

$ 0.0

^[2]

$ 16.6

^[2]

$ 0.0

^[2]

$ 0.0

^[2]

$ 0.0

^[2]

6.9

^[2]

$ 16.6

^[2]

$ 0.0

Cash to be received at spinoff

550.0

Senior notes

$ 425.0

425.0

Extinguishment of debt amount

418.3

Loss on extinguishment of debt, net of tax

6.9

$ 4.3

Loss on extinguishment of debt, per share, net of tax

$ 0.02

[1]	For additional information, see Note 3, Materials Technologies Separation.
[2]	For additional information, see Note 15, Debt.

Business Separation (Subsequent Event) (Narrative) (Details) - Subsequent Event [Member]	1 Months Ended
	Oct. 31, 2016
Subsequent Event [Line Items]
Date spin-off of Versum Completed	Oct. 01, 2016
Basis for spin stock issue	one share of Versum common stock for every two shares of Air Products’ common stock

Discontinued Operations (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deferred tax assets, valuation allowance		$ 155.2	$ 103.6
Unrecognized tax benefits		106.9	97.5	$ 108.7	$ 124.3
Energy-from-Waste [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal, before tax	$ 945.7	945.7
Loss on disposat, net of tax	846.6	846.6	0.0	0.0
Plant and equipment, estimated net realizable value	20.0	18.2	0.0
Deferred tax assets, valuation allowance	58.0
Unrecognized tax benefits	7.9
Energy-from-Waste [Member] \| Asset Impariment [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal, before tax	913.5	913.5
Energy-from-Waste [Member] \| Contract Actions/Other [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal, before tax	$ 32.2	32.2
European Homecare Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of business, net of tax		0.0	0.0	$ 3.9
Assets of discontinued operations		0.0	0.0
Liabilities of discontinued operations		$ 0.0	$ 0.0

Discontinued Operations (Carrying Amount of Accrual) (Details) - Energy From Waste [Member] - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Sep. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal, before tax	$ 945.7	$ 945.7
Noncash expenses		(913.5)
Cash expenditures		(18.6)
Currency translation adjustment		(1.4)
Accrual for actions to dispose of business		12.2
Asset Impariment [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal, before tax	913.5	913.5
Noncash expenses		(913.5)
Cash expenditures		0.0
Currency translation adjustment		0.0
Accrual for actions to dispose of business		0.0
Contract Actions/Other [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal, before tax	$ 32.2	32.2
Noncash expenses		0.0
Cash expenditures		(18.6)
Currency translation adjustment		(1.4)
Accrual for actions to dispose of business		$ 12.2

Discontinued Operations (Schedule of Operating Results) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from Discontinued Operations, net of tax		$ (884.2)	$ (6.8)	$ (2.9)
Energy From Waste [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales		0.0	0.0	0.0
Income (loss) before taxes		(41.0)	(9.2)	(10.9)
Income tax provision		3.4	2.4	3.4
Income (loss) from operations of discontinued operations		(37.6)	(6.8)	(7.5)
Loss on disposat, net of tax	$ 846.6	846.6	0.0	0.0
Income (loss) from Discontinued Operations, net of tax		(884.2)	(6.8)	(7.5)
European Homecare Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales		0.0	0.0	8.5
Income (loss) before taxes		0.0	0.0	0.7
Income tax provision		0.0	0.0	0.0
Income (loss) from operations of discontinued operations		0.0	0.0	0.7
Gain on sale of business, net of tax		0.0	0.0	3.9
Income (loss) from Discontinued Operations, net of tax		$ 0.0	$ 0.0	$ 4.6

Discontinued Operations (Schedule of Assets and Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Current Assets	$ 19.4		$ 1.8
Total Noncurrent Assets	0.0		891.8
Total Current Liabilities	19.0		17.0
Total Noncurrent Liabilities	0.0		2.5
Energy From Waste [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Plant and equipment	18.2	$ 20.0	0.0
Other current assets	1.2		1.8
Total Current Assets	19.4		1.8
Plant and equipment, net	0.0		891.8
Total Noncurrent Assets	0.0		891.8
Payables and accrued liabilities	19.0		17.0
Total Current Liabilities	19.0		17.0
Other noncurrent liabilities	0.0		2.5
Total Noncurrent Liabilities	$ 0.0		$ 2.5

Business Restructuring and Cost Reduction Actions (Narrative) (Details)
$ / shares in Units, $ in Millions

3 Months Ended

12 Months Ended

Sep. 30, 2016

USD ($)

^[1]

Jun. 30, 2016

USD ($)

^[1]

Mar. 31, 2016

USD ($)

^[1]

Dec. 31, 2015

USD ($)

^[1]

Sep. 30, 2015

USD ($)

^[1]

Jun. 30, 2015

USD ($)

^[1]

Mar. 31, 2015

USD ($)

^[1]

Dec. 31, 2014

USD ($)

^[1]

Sep. 30, 2014

USD ($)

Employees

$ / shares

Sep. 30, 2016

USD ($)

Employees

$ / shares

Sep. 30, 2015

USD ($)

Employees

$ / shares

Sep. 30, 2014

USD ($)

Cost Reduction Actions 2016 [Member]

$ 11.1

$ 14.2

$ 8.6

$ 0.0

$ 61.7

$ 58.2

$ 55.4

$ 32.4

$ 33.9

^[1]

$ 207.7

^[1]

$ 12.7

Business restructuring and cost reduction actions, after-tax

33.9

$ 24.0

Business restructuring and cost reduction actions, per share | $ / shares

$ 0.11

Number of positions eliminated | Employees

700

Cost Reduction Actions 2016 [Member] | Severance And Other Benefits [Member]

Business Realignment and Reorganization 2015 [Member]

$ 33.9

Business restructuring and cost reduction actions, after-tax

$ 12.7

207.7

12.7

$ 8.2

$ 153.2

Business restructuring and cost reduction actions, per share | $ / shares

$ 0.04

$ 0.71

Number of positions eliminated | Employees

2,000

Business Realignment and Reorganization 2015 [Member] | Industrial Gases Americas [Member]

Business Realignment and Reorganization 2015 [Member] | Industrial Gases EMEA [Member]

$ 31.7

2.9

Business Realignment and Reorganization 2015 [Member] | Industrial Gases Asia [Member]

52.2

3.1

Business Realignment and Reorganization 2015 [Member] | Industrial Gases Global [Member]

10.3

1.5

Business Realignment and Reorganization 2015 [Member] | Materials Technologies [Member]

37.0

1.5

Business Realignment and Reorganization 2015 [Member] | Corporate and Other [Member]

27.6

1.6

Business Realignment and Reorganization 2015 [Member] | Asset Actions [Member]

48.9

2.1

Business Realignment and Reorganization 2015 [Member] | Severance And Other Benefits [Member]

55.8

0.0

$ 151.9

$ 12.7

[1]	For additional information, see Note 5, Business Restructuring and Cost Reduction Actions.

Business Restructuring and Cost Reduction Actions (Carrying Amount of Accrual) (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Sep. 30, 2016

Jun. 30, 2016

^[1]

Mar. 31, 2016

^[1]

Dec. 31, 2015

^[1]

Sep. 30, 2015

Jun. 30, 2015

^[1]

Mar. 31, 2015

^[1]

Dec. 31, 2014

^[1]

Sep. 30, 2014

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Cost Reduction Actions 2016 [Member]

$ 11.1

^[1]

$ 14.2

$ 8.6

$ 0.0

$ 61.7

^[1]

$ 58.2

$ 55.4

$ 32.4

$ 33.9

^[1]

$ 207.7

^[1]

$ 12.7

Cost Reduction Actions 2016 [Member] | Severance And Other Benefits [Member]

33.9

33.9

(0.9)

(20.4)

0.3

Business Realignment and Reorganization 2015 [Member]

12.9

$ 12.7

207.7

12.7

(14.0)

Noncash expenses

(47.4)

(37.9)

(114.7)

(2.2)

(0.4)

Business Realignment and Reorganization 2015 [Member] | Severance And Other Benefits [Member]

3.4

41.7

10.5

3.4

41.7

10.5

151.9

12.7

(14.0)

Noncash expenses

0.0

(34.1)

(113.5)

(2.2)

(0.4)

Business Realignment and Reorganization 2015 [Member] | Asset Actions [Member]

0.0

34.5

10.5

0.0

34.5

10.5

55.8

0.0

0.0

Noncash expenses

(47.4)

(3.8)

(1.2)

0.0

0.0

Acquisitions, less cash acquired

$ 3.4

$ 7.2

$ 0.0

$ 3.4

$ 7.2

$ 0.0

[1]	For additional information, see Note 5, Business Restructuring and Cost Reduction Actions.

Business Combinations (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions

3 Months Ended

12 Months Ended

Sep. 30, 2015

^[1]

Jun. 30, 2015

^[1]

Mar. 31, 2015

^[1]

Dec. 31, 2014

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Business Acquisition [Line Items]

$ 0.0

$ 34.5

$ 0.0

Production Joint Venture [Member]

$ 0.0

$ 17.9

^[1]

$ 0.0

17.9

$ 0.0

Business Acquisition [Line Items]

Acquisitions, less cash acquired

$ 22.6

Percent ownership before acquisition

50.00%

Percent ownership after acquisition

100.00%

Gain on previously held equity interest, after tax

17.9

$ 11.2

Gain on previously held equity interest, per share

$ 0.05

[1]	For additional information, see Note 6, Business Combination.

Inventories (Narratives) (Details)	Sep. 30, 2016	Sep. 30, 2015
Inventory Disclosure [Abstract]
Percentage of LIFO Inventory	34.90%	35.80%

Inventories (Schedule of Inventory) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Inventories [Abstract]
Finished goods	$ 456.7	$ 494.9
Work in process	38.2	34.4
Raw materials, supplies and other	204.0	229.3
Total FIFO value	698.9	758.6
Less: Excess of FIFO cost over LIFO cost	(79.0)	(100.8)
Inventories	$ 619.9	$ 657.8

Summarized Financial Information of Equity Affiliates (Narratives) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Schedule of Equity Method Investment [Line Items]
Other income (expense), net		$ 58.1	$ 47.3	$ 52.8
Obligation for future contribution to equity affiliate		94.4	67.5
Investment in foreign affiliates		1,286.0	1,262.8
Goodwill associated with affiliate companies accounted for by equity method.		109.5	112.0
Dividends received from equity affiliates		$ 96.8	$ 51.9	$ 75.4
Abdullah Hashim Industrial Gas & Equipment Co. Ltd [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		25.00%
Air Products South Africa (Proprietary) Limited [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		50.00%
Bangkok Cogeneration Company Limited [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		49.00%
Bangkok Industrial Gases Co., Ltd. [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		49.00%
Chengdu Air & Gas Products Ltd. [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		50.00%
Daido Air Products Electronics, Inc. [Member]
Schedule of Equity Method Investment [Line Items]
Equity method investment, sale proceeds	$ 15.9
Equity method investment, gain on sale	0.7
Equity method investment, carrying value at time of sale	12.8
Daido Air Products Electronics, Inc. [Member] \| Equity Method Investments Member \| Reclassification Out Of Accumulated Other Comprehensive Income [Member] \| Currency Translation [Member}
Schedule of Equity Method Investment [Line Items]
Other income (expense), net	$ (2.4)
Helap Sa [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		50.00%
High-Tech Gases (Beijing) Co., Ltd. [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		50.00%
INFRA Group [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		40.00%
INOX Air Products Limited [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		50.00%
Jazan Gas Projects Company [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		25.00%
Obligation for future contribution to equity affiliate		$ 94.4
Noncash transaction, increase to investment		26.9
Total expected investment		100.0
Future payments to acquire equity method investments		$ 100.0
Kulim Industrial Gases Sdn. Bhd. [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		50.00%
Sapio Produzione Idrogeno Ossigeno Srl [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		49.00%
Tecnologia En Nitrogeno S De Rl De Cv [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		50.00%
Tyczka Industrie-Gases GmbH [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		50.00%
WuXi Hi-Tech Gas Co., Ltd. [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage		50.00%

Summarized Financial Information of Equity Affiliates (Investment Listing) (Details)	Sep. 30, 2016
Abdullah Hashim Industrial Gas & Equipment Co. Ltd [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	25.00%
Air Products South Africa (Proprietary) Limited [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	50.00%
Bangkok Cogeneration Company Limited [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	49.00%
Bangkok Industrial Gases Co., Ltd. [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	49.00%
Chengdu Air & Gas Products Ltd. [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	50.00%
Helap S.A. [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	50.00%
High-Tech Gases (Beijing) Co., Ltd. [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	50.00%
INFRA Group [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	40.00%
INOX Air Products Limited [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	50.00%
Jazan Gas Projects Company [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	25.00%
Kulim Industrial Gases Sdn. Bhd. [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	50.00%
Sapio Produzione Idrogeno Ossigeno S.r.l. [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	49.00%
Tecnologia en Nitrogeno S. de R.L. de C.V. [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	50.00%
Tyczka Industrie-Gases GmbH [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	50.00%
WuXi Hi-Tech Gas Co., Ltd. [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage	50.00%

Summarized Financial Information of Equity Affiliates (Table Of Summarized Financial Information Of Equity Affiliates) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Equity Method Investments and Joint Ventures [Abstract]
Current assets	$ 1,449.8	$ 1,296.4
Noncurrent assets	3,063.9	2,607.4
Current liabilities	699.2	654.0
Noncurrent liabilities	1,540.6	988.0
Net sales	2,308.5	2,604.3	$ 2,808.7
Sales less cost of sales	882.6	949.2	984.7
Operating income	487.8	524.0	542.9
Net income	$ 338.0	$ 351.0	$ 359.5

The amount of current liabilities reported by an equity method investment of the entity.

The amount of net income (loss) reported by an equity method investment of the entity.

The amount of noncurrent assets reported by an equity method investment of the entity.

The amount of noncurrent liabilities reported by an equity method investment of the entity.

Plant and Equipment, net (Narratives) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Property, Plant and Equipment [Line Items]
Depreciation	$ 893.0	$ 900.4	$ 914.8

Plant and Equipment, net (Major Classes of Plant and Equipment) (Details) - USD ($)
$ in Millions

12 Months Ended

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Less: accumulated depreciation

$ 20,190.1

$ 19,462.8

11,337.4

10,717.7

Plant and equipment, net

^[1]

8,852.7

8,745.1

$ 8,941.6

Land [Member]

232.9

226.2

Building [Member]

$ 1,119.8

1,080.2

Production Facility [Member]

30 years

Production Facility [Member] | Industrial Gases - Regional [Member]

$ 13,267.3

12,819.5

Production Facility [Member] | Industrial Gases - Regional [Member] | Minimum [Member]

^[2]

$ 12,372.1

11,873.8

Production Facility [Member] | Industrial Gases - Regional [Member] | Maximum [Member]

10 years

Production Facility [Member] | Materials Technologies [Member]

20 years

Production Facility [Member] | Materials Technologies [Member] | Minimum [Member]

$ 859.2

902.7

Production Facility [Member] | Materials Technologies [Member] | Maximum [Member]

10 years

Production Facility [Member] | Other [Member]

15 years

Production Facility [Member] | Other [Member] | Minimum [Member]

$ 36.0

43.0

Production Facility [Member] | Other [Member] | Maximum [Member]

5 years

Distribution and Other Machinery and Equipment [Member]

20 years

Distribution and Other Machinery and Equipment [Member] | Minimum [Member]

^[3]

$ 4,042.1

3,963.1

Distribution and Other Machinery and Equipment [Member] | Maximum [Member]

5 years

Distribution equipment | Cylinders [Member] | Minimum [Member]

25 years

Distribution equipment | Cylinders [Member] | Maximum [Member]

10 years

Distribution equipment | Tanks [Member]

25 years

Distribution equipment | Customer Stations [Member]

20 years

Distribution equipment | Tractors and Trailers [Member] | Minimum [Member]

7 years 6 months

Distribution equipment | Tractors and Trailers [Member] | Maximum [Member]

5 years

Construction in Progress [Member]

15 years

Goodwill, Accumulated impairment losses

$ 1,528.0

$ 1,373.8

[1]	Long-lived assets include plant and equipment, net.
[2]	Depreciable lives of production facilities related to long-term customer supply contracts are matched to the contract lives.
[3]	The depreciable lives for various types of distribution equipment are 10 to 25 years for cylinders, depending on the nature and properties of the product; 20 years for tanks; 7.5 years for customer stations; and 5 to 15 years for tractors and trailers.

Goodwill (Schedule of Goodwill by Segment) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2016	Sep. 30, 2015
Goodwill [Roll Forward]
Goodwill, net, Beginning Balance		$ 1,131.3	$ 1,237.3
Goodwill, Acquisitions and Adjustments		0.0	5.4
Goodwill, Impairment Loss	$ (305.2)
Goodwill, Currency Translation and Other		18.9	(111.4)
Goodwill, net, Ending Balance	1,237.3	1,150.2	1,131.3
Industrial Gases - Americas [Member]
Goodwill [Roll Forward]
Goodwill, net, Beginning Balance		297.6	327.2
Goodwill, Acquisitions and Adjustments		0.0	2.2
Goodwill, Currency Translation and Other		11.5	(31.8)
Goodwill, net, Ending Balance	327.2	309.1	297.6
Industrial Gases - EMEA [Member]
Goodwill [Roll Forward]
Goodwill, net, Beginning Balance		386.5	433.3
Goodwill, Acquisitions and Adjustments		0.0	3.2
Goodwill, Currency Translation and Other		(5.9)	(50.0)
Goodwill, net, Ending Balance	433.3	380.6	386.5
Industrial Gases - Asia [Member]
Goodwill [Roll Forward]
Goodwill, net, Beginning Balance		133.1	140.0
Goodwill, Acquisitions and Adjustments		0.0	0.0
Goodwill, Currency Translation and Other		2.1	(6.9)
Goodwill, net, Ending Balance	140.0	135.2	133.1
Industrial Gases - Global [Member]
Goodwill [Roll Forward]
Goodwill, net, Beginning Balance		19.9	21.4
Goodwill, Acquisitions and Adjustments		0.0	0.0
Goodwill, Currency Translation and Other		0.3	(1.5)
Goodwill, net, Ending Balance	21.4	20.2	19.9
Materials Technologies [Member]
Goodwill [Roll Forward]
Goodwill, net, Beginning Balance		294.2	315.4
Goodwill, Acquisitions and Adjustments		0.0	0.0
Goodwill, Currency Translation and Other		10.9	(21.2)
Goodwill, net, Ending Balance	$ 315.4	$ 305.1	$ 294.2

Goodwill (Schedule of Accumulated Impairment Losses)(Details) - USD ($)
$ in Millions

12 Months Ended

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Goodwill [Line Items]

Goodwill, gross

$ 1,408.8

$ 1,375.0

$ 1,522.1

^[1]

(258.6)

(243.7)

(284.8)

Industrial Gases Americas [Member]

1,150.2

1,131.3

1,237.3

Goodwill [Line Items]

Goodwill, Accumulated impairment losses currency translation

309.1

297.6

327.2

$ 46.6

$ 61.5

$ 20.4

[1]	Amount is attributable to the Industrial Gases – Americas segment and includes currency translation of $46.6, $61.5, and $20.4 as of 30 September 2016, 2015, and 2014, respectively.

Goodwill (Narrative) (Details) - USD ($)
$ in Millions

3 Months Ended

Sep. 30, 2014

Sep. 30, 2016

Sep. 30, 2015

Goodwill [Line Items]

Goodwill impairment charge

$ 1,237.3

$ 1,150.2

$ 1,131.3

305.2

Goodwill accumulated impairment losses

^[1]

$ 284.8

$ 258.6

$ 243.7

[1]	Amount is attributable to the Industrial Gases – Americas segment and includes currency translation of $46.6, $61.5, and $20.4 as of 30 September 2016, 2015, and 2014, respectively.

Intangible Assets (Narratives) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of Intangible Assets		$ 32.9	$ 36.0	$ 42.1
Industrial Gases Americas [Member]
Acquired Indefinite-Lived Intangible Assets [Line Items]
Intangible asset impairment charge	$ 4.9

Intangible Assets (Acquired Intangible Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Intangible Assets (Excluding Goodwill) [Abstract]
Intangible assets, gross	$ 741.9	$ 729.5
Intangible assets, accumulated amortization and impairment	(253.9)	(221.2)
Intangible assets, net	488.0	508.3
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	675.7	666.1
Accumulated amortization	(250.4)	(217.9)
Finite-lived intangible assets, net	425.3	448.2
Trade names and trademarks [Member]
Acquired Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross	66.2	63.4
Accumulated impairment	(3.5)	(3.3)
Indefinite-lived intangible assets, net	62.7	60.1
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	517.4	507.4
Accumulated amortization	(155.2)	(129.6)
Finite-lived intangible assets, net	362.2	377.8
Patents and Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	76.6	76.9
Accumulated amortization	(57.9)	(53.3)
Finite-lived intangible assets, net	18.7	23.6
Other Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	81.7	81.8
Accumulated amortization	(37.3)	(35.0)
Finite-lived intangible assets, net	$ 44.4	$ 46.8

Intangible Assets (Projected Annual Amortization Expense for Intangible Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2017	$ 31.2
2018	29.5
2019	27.9
2020	27.5
2021	26.1
Thereafter	283.1
Total future amortization expense	$ 425.3	$ 448.2

Leases (Narratives) (Details) - USD ($) $ in Millions	12 Months Ended
Leases (Narratives) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Leases [Abstract]
Capital leases, plant and equipment	$ 22.7	$ 12.8
Capital leases, accumulated depreciation	4.8	4.3
Operating leases, rent expense	80.8	88.2	$ 97.9
Future capital lease payment present value	10.2
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lessor, lease payments collected	186.0	148.1	134.4
Receivable Balance Reduction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lessor, lease payments collected	$ 85.5	$ 69.3	$ 72.7

Leases (Narrative) (Discontinued Operations) (Details) - Energy From Waste [Member] $ in Millions	Sep. 30, 2016 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued operations, operating leases, future minimum payments due in each of next five years	$ 2
Discontinued operations, operating leases, future minimum payments due thereafter	40
Discontinued operations, operating leases, future minimum payments due total	$ 50

Leases (Minimum Payments Due) (Details) $ in Millions	Sep. 30, 2016 USD ($)
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2017	$ 2.0
2018	1.8
2019	1.6
2020	1.6
2021	2.7
Thereafter	21.3
Total	31.0
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2017	70.5
2018	62.5
2019	49.9
2020	38.4
2021	31.6
Thereafter	102.2
Total	$ 355.1

Leases (Lease Receivables) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Leases [Abstract]
Gross minimum lease payments receivable	$ 2,072.6	$ 2,322.5
Unearned interest income	(762.7)	(888.1)
Lease Receivables, net	$ 1,309.9	$ 1,434.4

Leases (Minimum Lease Payments Receivable) (Details) $ in Millions	Sep. 30, 2016 USD ($)
Capital Leases, Future Minimum Payments Receivable, Fiscal Year Maturity [Abstract]
2017	$ 182.7
2018	181.4
2019	175.9
2020	171.1
2021	165.1
Thereafter	1,196.4
Total	$ 2,072.6

Financial Instruments (Narrative) (Details) € in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2016 EUR (€)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 EUR (€)	Sep. 30, 2015 USD ($)
Derivative [Line Items]
Net liability position of derivatives with credit risk-related contingent features		$ 11.2		$ 0.2
Collateral amount that counterparties would be required to post		267.6		226.9
Foreign Currency Debt [Member] \| Euro Denominated Member [Member]
Derivative [Line Items]
Notional Amount included in designated foreign currency denominated debt	€ 920.7	$ 1,034.4	€ 687.7	$ 768.4
Forward Exchange Contracts [Member]
Derivative [Line Items]
Maximum Remaining Maturity of Foreign Currency Derivatives	2 years 10 months	2 years 10 months
Interest rate management contract [Member]
Derivative [Line Items]
Maximum length of time of hedged exposures, years	0 years	0 years

Financial Instruments (Schedule of Outstanding Currency Price Risk Management Instruments) (Details) - Forward Exchange Contracts [Member] - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Derivative [Line Items]
US$ Notional	$ 7,949.0	$ 5,898.4
Years Average Maturity	8 months	11 months
Cash Flow Hedges [Member]
Derivative [Line Items]
US$ Notional	$ 4,130.3	$ 4,543.8
Years Average Maturity	6 months	6 months
Net Investment Hedges [Member]
Derivative [Line Items]
US$ Notional	$ 968.2	$ 491.3
Years Average Maturity	2 years 8 months	4 years
Hedges Not Designated [Member]
Derivative [Line Items]
US$ Notional	$ 2,850.5	$ 863.3
Years Average Maturity	5 months	8 months

Financial Instruments (Schedule of Interest Rate Swaps and Cross Currency Interest Rate Swaps) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Interest Rate Swaps Contracts [Member] \| Fair Value Hedges [Member]
Derivative [Line Items]
US$ Notional	$ 600.0	$ 600.0
Pay %	LIBOR	LIBOR
Average Receive %	2.28%	2.77%
Years Average Maturity	2 years 4 months	3 years 4 months
Interest Rate Swaps Contracts [Member] \| Cash Flow Hedges [Member]
Derivative [Line Items]
US$ Notional	$ 0.0	$ 0.0
Pay %	0.00%	0.00%
Average Receive %	0.00%	0.00%
Years Average Maturity	0 years	0 years
Cross Currency Interest Rate Swaps [Member] \| Net Investment Hedges [Member]
Derivative [Line Items]
US$ Notional	$ 517.7	$ 609.9
Pay %	3.24%	4.06%
Average Receive %	2.43%	2.61%
Years Average Maturity	2 years 7 months	3 years 2 months
Cross Currency Interest Rate Swaps [Member] \| Cash Flow Hedges [Member]
Derivative [Line Items]
US$ Notional	$ 1,088.9	$ 1,055.2
Pay %	4.77%	4.29%
Average Receive %	2.72%	2.63%
Years Average Maturity	3 years 4 months	3 years 11 months
Cross Currency Interest Rate Swaps [Member] \| Hedges Not Designated [Member]
Derivative [Line Items]
US$ Notional	$ 27.4	$ 12.9
Pay %	3.62%	3.12%
Average Receive %	0.81%	3.08%
Years Average Maturity	1 year 10 months	4 years 1 month

Financial Instruments (Fair Value of Derivative Instruments) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Derivative [Line Items]
Total Derivatives, Assets	$ 375.3	$ 318.9
Total Derivatives, Liabilities	95.8	125.2
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Total Derivatives, Assets	296.6	291.6
Total Derivatives, Liabilities	65.1	120.7
Designated as Hedging Instrument [Member] \| Other Receivables [Member] \| Interest rate management contract [Member]
Derivative [Line Items]
Total Derivatives, Assets	19.9	17.6
Designated as Hedging Instrument [Member] \| Other Receivables [Member] \| Forward Exchange Contracts [Member]
Derivative [Line Items]
Total Derivatives, Assets	72.3	52.1
Designated as Hedging Instrument [Member] \| Other Noncurrent Assets [Member] \| Interest rate management contract [Member]
Derivative [Line Items]
Total Derivatives, Assets	160.0	153.4
Designated as Hedging Instrument [Member] \| Other Noncurrent Assets [Member] \| Forward Exchange Contracts [Member]
Derivative [Line Items]
Total Derivatives, Assets	44.4	68.5
Designated as Hedging Instrument [Member] \| Accrued Liabilities [Member] \| Interest rate management contract [Member]
Derivative [Line Items]
Total Derivatives, Liabilities	0.0	0.0
Designated as Hedging Instrument [Member] \| Accrued Liabilities [Member] \| Forward Exchange Contracts [Member]
Derivative [Line Items]
Total Derivatives, Liabilities	44.0	110.7
Designated as Hedging Instrument [Member] \| Other Noncurrent Liabilities [Member] \| Interest rate management contract [Member]
Derivative [Line Items]
Total Derivatives, Liabilities	12.0	0.8
Designated as Hedging Instrument [Member] \| Other Noncurrent Liabilities [Member] \| Forward Exchange Contracts [Member]
Derivative [Line Items]
Total Derivatives, Liabilities	9.1	9.2
Hedges Not Designated [Member]
Derivative [Line Items]
Total Derivatives, Assets	78.7	27.3
Total Derivatives, Liabilities	30.7	4.5
Hedges Not Designated [Member] \| Other Receivables [Member] \| Interest rate management contract [Member]
Derivative [Line Items]
Total Derivatives, Assets	0.0	0.0
Hedges Not Designated [Member] \| Other Receivables [Member] \| Forward Exchange Contracts [Member]
Derivative [Line Items]
Total Derivatives, Assets	78.7	3.2
Hedges Not Designated [Member] \| Other Noncurrent Assets [Member] \| Interest rate management contract [Member]
Derivative [Line Items]
Total Derivatives, Assets	0.0	0.8
Hedges Not Designated [Member] \| Other Noncurrent Assets [Member] \| Forward Exchange Contracts [Member]
Derivative [Line Items]
Total Derivatives, Assets	0.0	23.3
Hedges Not Designated [Member] \| Accrued Liabilities [Member] \| Interest rate management contract [Member]
Derivative [Line Items]
Total Derivatives, Liabilities	0.0	0.0
Hedges Not Designated [Member] \| Accrued Liabilities [Member] \| Forward Exchange Contracts [Member]
Derivative [Line Items]
Total Derivatives, Liabilities	30.0	3.9
Hedges Not Designated [Member] \| Other Noncurrent Liabilities [Member] \| Interest rate management contract [Member]
Derivative [Line Items]
Total Derivatives, Liabilities	0.7	0.0
Hedges Not Designated [Member] \| Other Noncurrent Liabilities [Member] \| Forward Exchange Contracts [Member]
Derivative [Line Items]
Total Derivatives, Liabilities	$ 0.0	$ 0.6

Financial Instruments (Schedule of Gain/Loss Related to Derivative Instruments) (Details) - USD ($)
$ in Millions

12 Months Ended

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Other (income) expense, net

$ 115.5

$ 103.5

$ 125.1

(58.1)

(47.3)

(52.8)

Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]

Other (income) expense, net

10.0

3.3

(1.1)

(46.2)

16.9

$ (8.7)

Cash Flow Hedges [Member]

Net gain (loss) recognized in OCI (effective portion)

13.7

(35.0)

Net (gain) loss reclassified from OCI to sales/cost of sales (effective portion)

0.2

0.6

Net (gain) loss reclassified from OCI to other income (expense), net (effective portion)

(46.0)

15.4

Net (gain) loss reclassified from OCI to interest expense (effective portion)

10.0

3.3

Net (gain) loss reclassified from OCI to other income (expense), net (ineffective portion)

(0.2)

1.5

Cash Flow Hedges [Member] | Forward Exchange Contracts [Member]

Net gain (loss) recognized in OCI (effective portion)

10.5

(44.9)

Net (gain) loss reclassified from OCI to sales/cost of sales (effective portion)

0.2

0.6

Net (gain) loss reclassified from OCI to other income (expense), net (effective portion)

(25.7)

35.6

Net (gain) loss reclassified from OCI to interest expense (effective portion)

6.7

0.7

Net (gain) loss reclassified from OCI to other income (expense), net (ineffective portion)

(0.2)

1.5

Cash Flow Hedges [Member] | Other Contracts [Member]

Net gain (loss) recognized in OCI (effective portion)

^[1]

3.2

9.9

Net (gain) loss reclassified from OCI to sales/cost of sales (effective portion)

^[1]

0.0

Net (gain) loss reclassified from OCI to other income (expense), net (effective portion)

^[1]

(20.3)

(20.2)

Net (gain) loss reclassified from OCI to interest expense (effective portion)

^[1]

3.3

2.6

Net (gain) loss reclassified from OCI to other income (expense), net (ineffective portion)

^[1]

0.0

Fair Value Hedges [Member]

Net (gain) loss recognized in interest expense

^[2]

(8.8)

9.9

Fair Value Hedges [Member] | Forward Exchange Contracts [Member]

Net (gain) loss recognized in interest expense

^[2]

0.0

Fair Value Hedges [Member] | Other Contracts [Member]

Net (gain) loss recognized in interest expense

^[1],[2]

(8.8)

9.9

Net Investment Hedges [Member]

Net Investment Hedges [Member] | Forward Exchange Contracts [Member]

42.8

201.0

Net Investment Hedges [Member] | Foreign Currency Debt [Member]

17.4

60.1

Net Investment Hedges [Member] | Other Contracts [Member]

(9.6)

91.4

Hedges Not Designated [Member]

^[1]

35.0

49.5

Net gain (loss) recognized in net income (loss)

^[3]

(2.4)

(6.7)

Hedges Not Designated [Member] | Forward Exchange Contracts [Member]

Net gain (loss) recognized in net income (loss)

^[3]

(0.8)

(7.3)

Hedges Not Designated [Member] | Other Contracts [Member]

Net gain (loss) recognized in net income (loss)

^[1],[3]

$ (1.6)

$ 0.6

[1]	Other includes the impact on other comprehensive income (OCI) and earnings primarily related to interest rate swaps and cross currency interest rate swaps.
[2]	The impact of fair value hedges noted above was largely offset by recognized gains and losses resulting from the impact of changes in related interest rates on outstanding debt.
[3]	The impact of the non-designated hedges noted above was largely offset by recognized gains and losses resulting from the impact of changes in exchange rates on assets and liabilities denominated in nonfunctional currencies.

Fair Value Measurements (Narrative) (Details) $ in Millions	3 Months Ended
Fair Value Measurements (Narrative) (Details) $ in Millions	Sep. 30, 2014 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Goodwill impairment charge	$ 305.2

Fair Value Measurements (Schedule of the Carrying Values and Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion carrying value	$ 5,289.4	$ 4,384.7
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion carrying value	5,289.4	4,384.7
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion fair value	5,467.2	4,645.7
Interest rate management contract [Member] \| Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	179.9	171.8
Derivative liabilities	12.7	0.8
Interest rate management contract [Member] \| Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	179.9	171.8
Derivative liabilities	12.7	0.8
Forward Exchange Contracts [Member] \| Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	195.4	147.1
Derivative liabilities	83.1	124.4
Forward Exchange Contracts [Member] \| Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	195.4	147.1
Derivative liabilities	$ 83.1	$ 124.4

Fair Value Measurements (Schedule of Fair Value of Assets and Liabilities) (Details) - Fair Value [Member] - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets at Fair Value	$ 375.3	$ 318.9
Total Liabilities at Fair Value	95.8	125.2
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets at Fair Value	375.3	318.9
Total Liabilities at Fair Value	95.8	125.2
Interest rate management contract [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	179.9	171.8
Derivative liabilities	12.7	0.8
Interest rate management contract [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	179.9	171.8
Derivative liabilities	12.7	0.8
Forward Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	195.4	147.1
Derivative liabilities	83.1	124.4
Forward Exchange Contracts [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	195.4	147.1
Derivative liabilities	$ 83.1	$ 124.4

Fair Value Measurements (Schedule of Non-recurring Fair Value Measurements Of Long-Lived Assets Held For Sale) (Details) - Energy From Waste [Member] - Asset Actions [Member] - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Mar. 31, 2016
Discontinued Operation Long Lived Asset [Member]
Long Lived Assets Held-for-sale [Line Items]
Long-lived assets held for sale, Fair Value		$ 20.0
Long-lived assets held for sale, Total Loss	$ 20.0
Level 1 [Member] \| Discontinued Operation Long Lived Asset [Member]
Long Lived Assets Held-for-sale [Line Items]
Long-lived assets held for sale, Fair Value		0.0
Level 2 [Member]
Long Lived Assets Held-for-sale [Line Items]
Long-lived assets held for sale, Fair Value		0.0
Level 3 [Member] \| Discontinued Operation Long Lived Asset [Member]
Long Lived Assets Held-for-sale [Line Items]
Long-lived assets held for sale, Fair Value		$ 20.0

Debt (Narratives) (Details)
$ / shares in Units, € in Millions, $ in Millions

1 Months Ended

3 Months Ended

7 Months Ended

12 Months Ended

Sep. 30, 2015

CLF ( )

Sep. 30, 2015

USD ($)

$ / shares

Sep. 30, 2016

USD ($)

^[1]

Jun. 30, 2016

USD ($)

^[1]

Mar. 31, 2016

USD ($)

^[1]

Dec. 31, 2015

USD ($)

^[1]

Sep. 30, 2015

USD ($)

Jun. 30, 2015

USD ($)

^[1]

Mar. 31, 2015

USD ($)

^[1]

Dec. 31, 2014

USD ($)

^[1]

Apr. 30, 2013

Sep. 30, 2016

USD ($)

Sep. 30, 2015

USD ($)

Sep. 30, 2014

USD ($)

Sep. 30, 2016

EUR (€)

Sep. 30, 2016

USD ($)

Debt Instruments [Abstract]

Short-term debt, weighted average interest rate

0.80%

1.10%

Cash paid for interest, net of amounts capitalized

$ 121.1

$ 97.5

$ 132.4

485.0

708.7

608.6

$ 6.9

$ 0.0

$ 16.6

^[1]

$ 0.0

$ 6.9

^[1]

16.6

^[1]

$ 0.0

Eurobonds .375%

Debt instrument, issuance date

Jun. 01, 2016

Debt instrument, maturity date

Jun. 01, 2021

Debt Payable In Other Currencies

$ 0.0

0.0

$ 393.2

Interest rate of debt, stated percentage

0.375%

Debt instrument, maturity year

2021

Debt instrument, principal amount

€ 350

$ 386.9

Note 2.0%

Debt instrument, maturity date

Aug. 02, 2016

Senior Notes

$ 350.0

$ 0.0

Interest rate of debt, stated percentage

2.00%

Debt instrument, maturity year

2016

$ 350.0

CLP Series E bonds 6.3%

Debt instrument, maturity date

Jan. 22, 2030

$ 146.6

Loss on extinguishment of debt, net of tax

16.6

$ 14.2

Loss on extinguishment of debt, per share, net of tax | $ / shares

$ 0.07

Extinguishment of debt amount

3,000,000

$ 130.0

Revolving Credit Facility [Member] | Credit Agreement 2013 Member [Member]

Credit facility, initiation date

Apr. 30, 2013

Credit facility, length credit agreement in years

5 years

Credit facility, maximum borrowing capacity

$ 2,690.0

Credit facility, expiration date

Apr. 30, 2018

Credit facility, amount borrowed and outstanding

$ 0.0

Revolving Credit Facility [Member] | Credit Agreement 2013 Member [Member] | Maximum [Member]

Covenant, ratio of total debt to total capitalization

70.00%

Foreign Subsidiary Facility [Member]

Credit facility, maximum borrowing capacity

$ 51.3

Credit facility, amount borrowed and outstanding

$ 51.3

[1]	For additional information, see Note 15, Debt.

Debt (Business Separation Financing) (Narrative) (Details) - Versum Financing [Member] - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Debt Instrument [Line Items]
Senior Notes	$ 425.0
Senior Note 5.5%
Debt Instrument [Line Items]
Senior Notes	$ 425.0	$ 0.0
Interest rate of debt, stated percentage	5.50%
Debt instrument, maturity date	Sep. 30, 2024
Term Loan B 3.346%
Debt Instrument [Line Items]
Term Loan	$ 575.0	$ 0.0
Interest rate of debt, stated percentage	3.346%
Debt instrument, maturity date	Sep. 30, 2023
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	$ 200.0
Credit facility, amount borrowed and outstanding	$ 0.0
Line of credit facility, expiration date	Sep. 30, 2021
Net leverage ratio covenant (total debt net of cash on hand to total adjusted EBITDA)	325.00%
Revolving Credit Facility [Member] \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Revolving Credit Facility [Member] \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Term Facility [Member]
Debt Instrument [Line Items]
Term facility, percent original principal annual amortization	1.00%
Term Facility [Member] \| LIBOR
Debt Instrument [Line Items]
Interest rate, stated percentage, range minimum	0.75%
Basis spread on variable rate	2.50%
Term Facility [Member] \| Base Rate
Debt Instrument [Line Items]
Interest rate, stated percentage, range minimum	1.75%
Basis spread on variable rate	1.50%

Debt (Summary of Outstanding Debt) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Debt Instruments [Abstract]
Short-term borrowings	$ 935.8	$ 1,494.3
Current portion of long-term debt	371.3	435.6
Long-term debt	4,918.1	3,949.1
Total Debt	$ 6,225.2	$ 5,879.0

Debt (Short-term Borrowings) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Short-term Debt [Abstract]
Bank obligations	$ 133.1	$ 234.3
Commercial paper	802.7	1,260.0
Total Short-term Borrowings	$ 935.8	$ 1,494.3

Debt (Long-term Debt) (Details) - USD ($) $ in Millions	12 Months Ended
Debt (Long-term Debt) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Debt Instrument [Line Items]
Capital Lease Obligations	$ 10.2
Less: Unamortized discount	(9.2)	$ (6.3)
Total Long-term Debt	5,289.4	4,384.7
Less: Current portion of long-term debt	(371.3)	(435.6)
Long-term debt	4,918.1	3,949.1
Versum Financing [Member]
Debt Instrument [Line Items]
Senior Notes	$ 425.0
United States 5.0%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	5.00%
Debt Instruments Maturity Year	2018
Capital Lease Obligations	$ 0.5	0.7
Foreign 11.3%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	11.30%
Debt Instrument, Maturity Year Range, Start	2017
Debt Instrument, Maturity Year Range, End	2036
Capital Lease Obligations	$ 9.7	1.1
Debentures 8.75%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	8.75%
Debt Instruments Maturity Year	2021
Senior Notes	$ 18.4	18.4
Series D 7.3%
Debt Instrument [Line Items]
Weighted average interest rate	7.30%
Debt Instruments Maturity Year	2016
Medium-term Notes	$ 0.0	32.1
Series E 7.6%
Debt Instrument [Line Items]
Weighted average interest rate	7.60%
Debt Instruments Maturity Year	2026
Medium-term Notes	$ 17.2	17.2
Note 2.0%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	2.00%
Debt Instruments Maturity Year	2016
Senior Notes	$ 0.0	350.0
Note 1.2%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	1.20%
Debt Instruments Maturity Year	2018
Senior Notes	$ 400.0	400.0
Note 4.375%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	4.375%
Debt Instruments Maturity Year	2019
Senior Notes	$ 400.0	400.0
Note 3.0%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	3.00%
Debt Instruments Maturity Year	2022
Senior Notes	$ 400.0	400.0
Note 2.75%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	2.75%
Debt Instruments Maturity Year	2023
Senior Notes	$ 400.0	400.0
Note 3.35%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	3.35%
Debt Instruments Maturity Year	2024
Senior Notes	$ 400.0	400.0
Senior Note 5.5% \| Versum Financing [Member]
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	5.50%
Debt Instruments Maturity Year	2024
Senior Notes	$ 425.0	0.0
Term Loan B 3.346% \| Versum Financing [Member]
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	3.346%
Debt Instruments Maturity Year	2023
Term Loan	$ 575.0	0.0
Variable-rate industrial revenue bonds .68%
Debt Instrument [Line Items]
Weighted average interest rate	0.68%
Debt Instrument, Maturity Year Range, Start	2035
Debt Instrument, Maturity Year Range, End	2050
Other Long-term Debt	$ 769.9	769.9
Other 1.3%
Debt Instrument [Line Items]
Weighted average interest rate	1.30%
Debt Instrument, Maturity Year Range, Start	2018
Debt Instrument, Maturity Year Range, End	2019
Other Long-term Debt	$ 25.7	35.0
Eurobonds 4.625%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	4.625%
Debt Instruments Maturity Year	2017
Debt Payable In Other Currencies	$ 337.0	335.2
Eurobonds 2.0%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	2.00%
Debt Instruments Maturity Year	2020
Debt Payable In Other Currencies	$ 337.0	335.2
Eurobonds 1.0%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	1.00%
Debt Instruments Maturity Year	2025
Debt Payable In Other Currencies	$ 337.0	335.2
Eurobonds .375%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	0.375%
Debt Instruments Maturity Year	2021
Debt Payable In Other Currencies	$ 393.2	0.0
Other 4.4%
Debt Instrument [Line Items]
Interest rate of debt, stated percentage	4.40%
Debt Instrument, Maturity Year Range, Start	2016
Debt Instrument, Maturity Year Range, End	2022
Debt Payable In Other Currencies	$ 53.0	$ 161.0

Debt (Maturities of Long-term Debt) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Long-term Debt, Fiscal Year Maturity [Abstract]
2017	$ 371.3
2018	419.4
2019	406.6
2020	353.4
2021	416.9
Thereafter	3,321.8
Total Long-term Debt	$ 5,289.4	$ 4,384.7

Retirement Benefits (Narrative) (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Sep. 30, 2016

Jun. 30, 2016

^[1]

Mar. 31, 2016

^[1]

Dec. 31, 2015

^[1]

Sep. 30, 2015

Jun. 30, 2015

^[1]

Mar. 31, 2015

^[1]

Dec. 31, 2014

^[1]

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Recognized settlement losses

$ (2.8)

^[1]

$ (1.0)

$ (2.6)

$ 0.0

$ (7.0)

^[1]

$ (1.6)

$ (12.6)

$ 0.0

$ (6.4)

^[1]

$ (21.2)

^[1]

$ (5.5)

Shares of Common Stock in ESOP

3,031,534

Defined Contribution Plan, Cost Recognized

$ 43.2

44.2

$ 45.2

Pension Plans, Defined Benefit [Member]

ABO for all defined benefit pension plans

Company contributions

79.3

$ 4,954.9

$ 4,444.8

4,954.9

4,444.8

Pension arrangements not funded because of jurisdictional practice, accumulated benefit obligation

108.0

Pension arrangements not funded because of jurisdictional practice, projected benefit obligation

$ 115.3

Average remaining service period

approximately 10 years

Pension Plans, Defined Benefit [Member] | Minimum [Member]

Total expected contributions for next fiscal year

$ 65.0

Pension Plans, Defined Benefit [Member] | Maximum [Member]

Total expected contributions for next fiscal year

85.0

Other Postretirement Benefit Plans, Defined Benefit [Member]

Benefits paid

$ 12.3

$ 9.3

Accumulated postretirement benefit obligation discount rate

2.40%

2.60%

2.40%

1.90%

2.40%

1.90%

2.40%

Net actuarial loss

$ 18.7

$ 11.9

$ 18.7

$ 11.9

Actuarial loss estimated

(2.3)

U.S. Lump Sum Cash Payment [Member]

Benefits paid

$ 52.9

[1]	For additional information, see Note 16, Retirement Benefits.

Retirement Benefits (Schedule of Net Periodic Benefit Cost) (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Sep. 30, 2016

^[1]

Jun. 30, 2016

^[1]

Mar. 31, 2016

^[1]

Dec. 31, 2015

^[1]

Sep. 30, 2015

^[1]

Jun. 30, 2015

^[1]

Mar. 31, 2015

^[1]

Dec. 31, 2014

^[1]

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Defined Benefit Plan Recognized Gain Loss Due to Curtailments

Settlement loss

$ 2.8

$ 1.0

$ 2.6

$ 0.0

$ 7.0

$ 1.6

$ 12.6

$ 0.0

$ 6.4

^[1]

$ 21.2

^[1]

$ 5.5

US [Member]

Retirement Benefits [Abstract]

0.0

(5.3)

0.0

Service cost

36.5

42.2

42.6

Interest cost

110.7

124.7

130.7

Actuarial loss amortization

(202.0)

(187.8)

85.3

78.9

78.3

Prior service cost amortization

2.8

2.9

Settlement loss

5.1

18.9

4.8

Curtailments

0.0

5.3

0.0

Special termination benefits

2.0

7.2

0.2

Net periodic benefit cost

(0.3)

1.0

0.0

40.1

79.0

71.7

International [Member]

Retirement Benefits [Abstract]

Defined Benefit Plan Recognized Gain Loss Due to Curtailments

1.1

0.0

Service cost

24.3

31.3

36.0

Interest cost

44.3

57.8

67.2

Actuarial loss amortization

(78.3)

(79.8)

(78.1)

35.6

41.4

36.1

Prior service cost amortization

(0.2)

0.0

0.2

Settlement loss

1.3

2.3

0.7

Curtailments

(1.1)

0.0

Special termination benefits

0.0

1.5

0.1

Net periodic benefit cost

2.1

2.0

28.0

56.6

64.2

Other Postretirement Benefit Plans, Defined Benefit [Member]

Actuarial loss amortization

Service cost

2.2

2.8

3.3

Interest cost

2.0

2.2

2.3

0.7

0.8

1.7

Net periodic benefit cost

$ 4.9

$ 5.8

$ 7.3

[1]	For additional information, see Note 16, Retirement Benefits.

Retirement Benefits (Assumption in calculating net periodic benefit Cost) (Details)

12 Months Ended

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

US [Member]

^[1]

4.30%

4.80%

Rate of compensation increase

8.00%

8.30%

3.50%

4.00%

US [Member] | Equity Securities [Member]

US [Member] | Debt Securities [Member]

8.30%

US [Member] | Real Estate [Member]

5.10%

U.S. Service Cost [Member]

6.90%

U.S. Interest Cost [Member]

4.50%

4.10%

International [Member]

^[1]

3.30%

3.60%

4.30%

Rate of compensation increase

6.30%

6.10%

6.50%

3.50%

3.60%

3.70%

International Service Cost [Member]

International Interest Cost [Member]

3.40%

Other Postretirement Benefit Plans, Defined Benefit [Member]

3.20%

2.40%

2.60%

2.40%

United Kingdom [Member]

Percentage of International Plan Assets

6.60%

over 80%

United Kingdom [Member] | Equity Securities [Member]

United Kingdom [Member] | Debt Securities [Member]

7.30%

3.50%

[1]

Effective in 2016, the Company began to measure the service cost and interest cost components of pension expense by applying spot rates along the yield curve to the relevant projected cash flows, as we believe this provides a better measurement of these costs. The 2016 discount rates used to measure the service cost and interest cost of our U.S. pension plans were 4.5% and 4.1%, respectively. The rates used to measure the service cost and interest cost of our major International pension plans were 3.4% and 3.2%, respectively. The previous method would have used a single discount rate for both service and interest costs. The Company has accounted for this as a change in accounting estimate and, accordingly has accounted for it on a prospective basis. This change does not affect the measurement of the total benefit obligation.

Retirement Benefits (Assumption in calculating projected benefit obligation) (Details)	Sep. 30, 2016	Sep. 30, 2015
US [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.50%	4.40%
Rate of compensation increase	3.50%	3.50%
International [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.00%	3.40%
Rate of compensation increase	3.50%	3.50%
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	1.90%	2.40%

Retirement Benefits (Change in PBO) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
US [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Obligation at beginning of year	$ 3,139.9	$ 3,002.9
Service cost	36.5	42.2	$ 42.6
Interest cost	110.7	124.7	130.7
Amendments	1.2	1.2
Actuarial (gain) loss	380.2	130.4
Curtailments	(0.4)	5.3
Settlement (gain) loss	5.4	6.7
Special termination benefits	2.0	7.2
Participant contributions	0.0	0.0
Benefits paid	(197.4)	(181.8)
Other	(0.4)	1.1
Obligation at End of Year	3,477.7	3,139.9	3,002.9
International [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Obligation at beginning of year	1,647.9	1,735.7
Service cost	24.3	31.3	36.0
Interest cost	44.3	57.8	67.2
Amendments	0.0	(3.1)
Actuarial (gain) loss	376.4	30.0
Curtailments	(1.2)	(5.1)
Settlement (gain) loss	(3.4)	(8.6)
Special termination benefits	0.0	1.5
Participant contributions	1.6	2.1
Benefits paid	(46.6)	(50.3)
Currency translation/other	(193.7)	(143.4)
Obligation at End of Year	1,849.6	1,647.9	1,735.7
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Obligation at beginning of year	86.9	93.5
Service cost	2.2	2.8	3.3
Interest cost	2.0	2.2	2.3
Actuarial (gain) loss	7.5	(2.3)
Benefits paid	(12.3)	(9.3)
Obligation at End of Year	$ 86.3	$ 86.9	$ 93.5

Retirement Benefits (Change in Plan Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
US [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value at beginning of year	$ 2,613.6	$ 2,746.2
Actual return on plan assets	275.2	(14.0)
Company contributions	13.9	63.1
Participant contributions	0.0	0.0
Benefits paid	(197.4)	(181.8)
Settlements	0.0	0.0
Currency translation/other	0.0	0.1
Fair Value at End of Year	2,705.3	2,613.6
Funded Status at End of Year	(772.4)	(526.3)
International [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value at beginning of year	1,302.8	1,368.4
Actual return on plan assets	273.2	25.9
Company contributions	65.4	74.4
Participant contributions	1.6	2.1
Benefits paid	(46.6)	(50.3)
Settlements	(3.4)	(8.6)
Currency translation/other	(181.9)	(109.1)
Fair Value at End of Year	1,411.1	1,302.8
Funded Status at End of Year	(438.5)	(345.1)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Benefits paid	$ (12.3)	$ (9.3)

Retirement Benefits (Amounts recognized in balance sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Defined Benefit Plan Disclosure [Line Items]
Accrued liabilities	$ (35.5)	$ (26.1)
US [Member]
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0.0	4.0
Accrued liabilities	(24.1)	(15.7)
Noncurrent liabilities	(748.3)	(514.6)
Net Amount Recognized	(772.4)	(526.3)
International [Member]
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0.0	0.3
Accrued liabilities	0.0	0.0
Noncurrent liabilities	(438.5)	(345.4)
Net Amount Recognized	(438.5)	(345.1)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued liabilities	(11.4)	(10.4)
Noncurrent liabilities	$ (74.9)	$ (76.5)

Retirement Benefits (Changes recognized in other comprehensive income on pretax basis) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
US [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (gain) loss arising during the period	$ 311.8	$ 351.8
Amortization of net actuarial loss	(90.4)	(97.8)
Prior service cost (credit) arising during the period	1.2	1.2
Amortization of prior service cost	(2.8)	(2.8)
Total	219.8	252.4
International [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (gain) loss arising during the period	172.1	79.4
Amortization of net actuarial loss	(36.5)	(43.3)
Prior service cost (credit) arising during the period	(0.1)	(3.1)
Amortization of prior service cost	0.2	0.0
Total	135.7	33.0
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (gain) loss arising during the period	7.5	(2.3)
Amortization of net actuarial loss	(0.7)	(0.8)
Total	$ 6.8	$ (3.1)

Retirement Benefits (Changes recognized in accumulated other comprehensive income on pretax basis) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
US [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ 1,273.6	$ 1,052.2
Prior service cost	8.5	10.1
Total	1,282.1	1,062.3
International [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	769.6	634.0
Prior service cost	(1.9)	(2.0)
Net transition liability	0.4	0.4
Total	768.1	632.4
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ 18.7	$ 11.9

Retirement Benefits (Amount of accumulated other comprehensive income expected to be recognized in next fiscal year) (Details) $ in Millions	12 Months Ended
	Sep. 30, 2016 USD ($)
US [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ 103.0
Prior service cost	2.8
International [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	58.3
Prior service cost	(0.2)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ 2.3

Retirement Benefits (Benefit liability exceeds value of plan assets) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
US [Member]
Pension Plans with PBO in Excess of Plan Assets:
PBO	$ 3,477.7	$ 2,917.1
Fair value of Plan assets	2,705.3	2,386.7
Pension Plans with ABO in Excess of Plan Assets:
ABO	3,242.5	2,689.2
Fair value of plan assets	2,705.3	2,386.7
International [Member]
Pension Plans with PBO in Excess of Plan Assets:
PBO	1,849.6	1,644.5
Fair value of Plan assets	1,411.1	1,299.1
Pension Plans with ABO in Excess of Plan Assets:
ABO	1,673.6	1,498.0
Fair value of plan assets	$ 1,370.1	$ 1,263.2

Retirement Benefits (Plan Assets target allocation) (Details)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
US [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
US [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	60.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	80.00%
Defined Benefit Plan, Actual Plan Asset Allocations	65.00%	68.00%
US [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	20.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	30.00%
Defined Benefit Plan, Actual Plan Asset Allocations	28.00%	25.00%
US [Member] \| Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	0.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	10.00%
Defined Benefit Plan, Actual Plan Asset Allocations	7.00%	7.00%
US [Member] \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	0.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	0.00%
Defined Benefit Plan, Actual Plan Asset Allocations	0.00%	0.00%
International [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
International [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	55.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	67.00%
Defined Benefit Plan, Actual Plan Asset Allocations	60.00%	59.00%
International [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	32.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	43.00%
Defined Benefit Plan, Actual Plan Asset Allocations	38.00%	40.00%
International [Member] \| Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	0.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	2.00%
Defined Benefit Plan, Actual Plan Asset Allocations	1.00%	0.00%
International [Member] \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	0.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	0.00%
Defined Benefit Plan, Actual Plan Asset Allocations	1.00%	1.00%

Retirement Benefits (Projected benefit payments) (Details) $ in Millions	Sep. 30, 2016 USD ($)
US [Member]
Defined Benefit Plan Disclosure [Line Items]
2017	$ 150.3
2018	152.7
2019	157.2
2020	161.8
2021	166.7
2022 - 2026	909.6
International [Member]
Defined Benefit Plan Disclosure [Line Items]
2017	45.7
2018	48.3
2019	50.2
2020	51.1
2021	54.3
2022 - 2026	306.9
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
2017	11.5
2018	11.0
2019	10.7
2020	10.2
2021	9.7
2022 - 2026	$ 35.3

Retirement Benefits (Summary of changes in pension plan assets fair value classified as level 3) (Details) - Level 3 [Member] - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value at beginning of year	$ 226.1	$ 219.2
Actual return on plan assets:
Assets held at end of year	21.2	12.7
Assets sold during the period	0.3	0.5
Purchases, sales, and settlements, net	(2.4)	(6.3)
Fair Value at End of Year	245.2	226.1
Pooled Funds [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value at beginning of year	6.6	9.3
Actual return on plan assets:
Assets held at end of year	0.1	(0.2)
Assets sold during the period	0.3	0.5
Purchases, sales, and settlements, net	0.3	(3.0)
Fair Value at End of Year	7.3	6.6
Real Estate [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value at beginning of year	174.2	150.2
Actual return on plan assets:
Assets held at end of year	17.9	24.0
Assets sold during the period	0.0	0.0
Purchases, sales, and settlements, net	0.0	0.0
Fair Value at End of Year	192.1	174.2
Insurance Contracts [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value at beginning of year	45.3	59.7
Actual return on plan assets:
Assets held at end of year	3.2	(11.1)
Assets sold during the period	0.0	0.0
Purchases, sales, and settlements, net	(2.7)	(3.3)
Fair Value at End of Year	$ 45.8	$ 45.3

Retirement Benefits (Assumed heathcare trend rates) (Details)	12 Months Ended
	Sep. 30, 2015
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]
Healthcare trend rate	7.00%
Ultimate trend rate	5.00%
Year the ultimate trend rate is reached	2019

Commitments and Contingencies (Litigation and Environmental) (Narrative) (Details) R$ in Millions, $ in Millions	1 Months Ended	12 Months Ended
	Sep. 30, 2010 BRL (R$)	Sep. 30, 2016 USD ($)	Sep. 30, 2016 BRL (R$) Sites	Sep. 30, 2016 USD ($) Sites	Sep. 30, 2015 USD ($)
Environmental [Member]
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies				$ 81.4	$ 80.6
Approximate number of sites on which settlement has not been reached \| Sites			33	33
Accrual for environmental loss contingencies, Minimum exposure				$ 81.0
Accrual for environmental loss contingencies, Maximum exposure				95.0
Alleged Anticompete Litigation [Member]
Loss Contingencies [Line Items]
Civil fines imposed	R$ 179.2	$ 55.0
Provision for litigation		$ 0.0
Maximum of loss contingency range subject to interest			R$ 179.2	$ 55.0

Commitments and Contingencies (Pace) (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2006
Loss Contingencies [Line Items]
Pretax environmental expense	$ 27.0	$ 28.3	$ 35.1
Pace, Florida [Member]
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	$ 30.1			$ 42.0
Years to complete environmental remediation	20 years beginning in 2006
Change in estimated exposure	$ 0.0
Environmental loss contingencies estimated costs through completion, maximum	52.0
Environmental loss contingencies estimated costs through completion, minimum	$ 42.0
Segment Discontinued Operations Member \| Pace, Florida [Member]
Loss Contingencies [Line Items]
Pretax environmental expense				$ 42.0

Commitments and Contingencies (Piedmont) (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2008
Loss Contingencies [Line Items]
Pretax environmental expense	$ 27.0	$ 28.3	$ 35.1
Piedmont, Florida [Member]
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	$ 17.5			$ 24.0
Years to complete environmental remediation	until 2019 to complete source area remediation with groundwater recovery and treatment, continuing through 2029.
Change in estimated exposure	$ 0.0
Total anticipated exposure at this site				24.0
Segment Discontinued Operations Member \| Piedmont, Florida [Member]
Loss Contingencies [Line Items]
Pretax environmental expense				$ 24.0

Commitments and Contingencies (Pasadena) (Narrative) (Details) - Pasadena Texas Member [Member] - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2012
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	$ 10.4
Years to complete environmental remediation	until 2042
Total anticipated exposure at this site		$ 13.0
Change in estimated exposure	$ 0.0

Commitments and Contingencies (Asset Retirement Obligations) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Asset Retirement Obligation [Abstract]
Asset retirement obligations	$ 119.9	$ 109.4	$ 94.0
Additional accruals	10.4	17.6
Liabilities settled	(4.4)	(3.6)
Accretion expense	5.4	4.7
Currency translation adjustment	$ (0.9)	$ (3.3)

Commitments and Contingencies (Guarantees and Other) (Narrative) (Details) £ in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2016 GBP (£)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)
Guarantor Obligations [Line Items]
Equity contributions or payments required		$ 0.0
Obligation for future contribution to equity affiliate		94.4	$ 67.5
Unrecorded Unconditional Purchase Obligation [Line Items]
2017		942.0
Unconditional purchase obligation		$ 5,331.0
Jazan [Member]
Guarantor Obligations [Line Items]
Percentage share of loan	25.00%	25.00%
Equity method investment, ownership percentage	25.00%	25.00%
Obligation for future contribution to equity affiliate		$ 94.4
HYCO Feedstock Supply [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Unconditional purchase obligation		330.0
Purchase commitments - additional plant and equipment [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
2017		350.0
Helium Purchases [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Unconditional purchase obligation		4,000.0
Jazan [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
2017 and 2018		$ 500.0
Trinidad Facility [Member]
Guarantor Obligations [Line Items]
Equity method investment, ownership percentage	50.00%	50.00%
Maximum potential payment under guarantees		$ 29.0
Exposures under the guarantee completion year	by 2024
U K and Ireland Homecare Business [Member]
Guarantor Obligations [Line Items]
Maximum potential payment under guarantees	£ 20	25.0
Exposures under the guarantee completion year	by 2020
Parent Guarantee [Member] \| Jazan [Member]
Guarantor Obligations [Line Items]
Maximum potential payment under guarantees		100.0
Exposures under the guarantee completion year	until 2020
Bank Guarantee [Member] \| Jazan [Member]
Guarantor Obligations [Line Items]
Maximum potential payment under guarantees		$ 311.0

Commitments and Contingencies (Purchase Obligation) (Details) $ in Millions	Sep. 30, 2016 USD ($)
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
2017	$ 942
2018	525
2019	307
2020	298
2021	276
Thereafter	2,983
Total	$ 5,331

Capital Stock (Common Stock) (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013	Sep. 15, 2011
Capital Stock [Abstract]
Common stock, authorized shares	300,000,000
Common stock, par value	$ 1	$ 1
Common stock, issued shares	249,455,584	249,455,584
Common stock, shares outstanding	217,350,825	215,359,113	213,538,144	211,179,257
Equity, Class of Treasury Stock [Line Items]
Shares repurchased during period, shares	0	0	0
Share repurchase authorization remaining, amount	$ 485.3
Maximum [Member]
Equity, Class of Treasury Stock [Line Items]
Share repurchase program authorized amount					$ 1,000.0

Capital Stock (Changes in Common Shares) (Details) - shares	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of year	215,359,113	213,538,144	211,179,257
Purchase of treasury shares	0	0	0
Issuance of treasury shares for stock option and award plans	1,991,712	1,820,969	2,358,887
Balance, end of year	217,350,825	215,359,113	213,538,144

Capital Stock (Preferred Stock) (Narrative) (Details) - $ / shares shares in Millions	Sep. 30, 2016	Sep. 30, 2015
Class of Stock [Line Items]
Preferred stock, shares authorized	25.0
Perferred stock, par value, per share	$ 1
Preferred stock, shares issued	0.0	0.0
Preferred stock, shares outstanding	0.0	0.0
Series A Junior Participating Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares authorized	2.5
Preferred stock, shares issued	0.0	0.0
Preferred stock, shares outstanding	0.0	0.0

Share-Based Compensation (Narratives) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Award [Line Items]
Shares available for future grant	4,840,837
Deferred Stock Units [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Number of units/shares granted	284,000
Weighted-average grant date fair value of units/shares	$ 136.37
Cash payments made for deferred stock units	$ 2.9	$ 9.6	$ 2.1
Unrecognized compensation costs	$ 41.4
Unrecognized compensation costs, period for recognition, years	2 years 2 months
Fair value of deferred stock units paid	$ 41.6	$ 35.5	$ 31.8
Deferred Stock Units [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Vesting or deferral Period	2 years
Deferred Stock Units [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Vesting or deferral Period	5 years
Director Deferred Stock Units [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Period after service in which to elect payment	10 years
Market-Based Deferred Stock Unit [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Number of units/shares granted	130,167	119,272
Vesting or deferral Period	3 years
Weighted-average grant date fair value of units/shares	$ 135.49	$ 194.51
Time-Based Deferred Stock Unit [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Number of units/shares granted	153,792
Weighted-average grant date fair value of units/shares	$ 137.12
Employee Stock Options [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Exercisable period from grant date	10 years
Vesting or deferral Period	3 years
Weighted-average grant date fair value of stock option		$ 37.19	$ 29.1
Closing stock price	$ 150.34
Intrinsic value of stock options exercised	$ 115.3	$ 115.5	$ 125.3
Unrecognized compensation costs	$ 1.1
Unrecognized compensation costs, period for recognition, years	11 months
Cash received from option exercises	$ 141.3
Tax benefit realized from stock option exericses	39.8
Excess tax benefit	$ 25.0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Number of units/shares granted	33,000
Weighted-average grant date fair value of units/shares	$ 138
Unrecognized compensation costs	$ 5.1
Unrecognized compensation costs, period for recognition, years	2 years 7 months
Fair value of vested restricted stock	$ 4.3	$ 1.4	$ 12.1
Restricted Stock [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Vesting or deferral Period	1 year
Restricted Stock [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Vesting or deferral Period	4 years

Share-Based Compensation (Compensation Cost Recognized in Income Statement) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Before-Tax Share-Based Compensation	$ 37.6	$ 45.7	$ 44.0
Income Tax Benefit	(13.1)	(16.0)	(15.6)
After-Tax Share-Based Compensation	$ 24.5	$ 29.7	$ 28.4

Share-Based Compensation (Total Before Tax Share Based Compensation Cost by Type of Program) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation	$ 37.6	$ 45.7	$ 44.0
Deferred Stock Units [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation	29.9	28.8	20.2
Employee Stock Options [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation	4.2	12.6	21.6
Restricted Stock [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation	$ 3.5	$ 4.3	$ 2.2

Share-Based Compensation (Market-Based Deferred Stock Unit Valuation Assumptions)(Details) - Market-Based Deferred Stock Unit [Member]	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Award [Line Items]
Expected volatility	20.50%	19.60%
Risk-free interest rate	1.20%	0.90%
Expected dividend yield	2.20%	2.50%

Share-Based Compensation (Summary of Deferred Stock Units Activity) (Details) - Deferred Stock Units [Member] shares in Thousands	12 Months Ended
	Sep. 30, 2016 $ / shares shares
Share Based Compensation Arrangement By Share-Based Payment Award NonOption Equity Instruments Outstanding [RollForward]
Outstanding - Shares, Beginning \| shares	1,056
Granted - Shares \| shares	284
Paid out - Shares \| shares	(299)
Forfeited/adjustments - Shares \| shares	(40)
Outstanding - Shares, Ending \| shares	1,001
Outstanding - Weighted Average Grant Date Fair Value, Beginning \| $ / shares	$ 102.01
Granted - Weighted Average Grant Date Fair Value \| $ / shares	136.37
Paid out - Weighted Average Grant Date Fair Value \| $ / shares	77.81
Forfeited/adjustments - Weighted Average Grant Date Fair Value \| $ / shares	90.83
Outstanding - Weighted Average Grant Date Fair Value, Ending \| $ / shares	$ 119.44

Share-Based Compensation (Stock Option Valuation Assumptions) (Details) - Employee Stock Options [Member]	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Award [Line Items]
Expected volatility	30.30%
Expected volatility, minimum		29.80%
Expected volatility, maximum		31.10%
Expected dividend yield	2.60%
Expected life (in years)	7 years 6 months
Risk-free interest rate	2.20%
Risk-free interest rate, minimum		2.00%
Risk-free interest rate, maximum		2.70%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Expected dividend yield		2.40%
Expected life (in years)		6 years 6 months
Maximum [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Expected dividend yield		2.90%
Expected life (in years)		8 years 5 months

Share-Based Compensation (Summary of Stock Option Activity) (Details) shares in Thousands	12 Months Ended
	Sep. 30, 2016 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding-Shares, Beginning \| shares	5,725
Granted-Shares \| shares	0
Exercised-Shares \| shares	(1,783)
Forfeited-Shares \| shares	(26)
Outstanding-Shares, Ending \| shares	3,916
Exercisable-Shares \| shares	3,537
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding-Weighted Average Exercise Price, Beginning \| $ / shares	$ 87.35
Granted-Weighted Average Exercise Price \| $ / shares	0
Exercised-Weighted Average Exercise Price \| $ / shares	80.66
Forfeited-Weighted Average Exercise Price \| $ / shares	106.52
Outstanding-Weighted Average Exercise Price, Ending \| $ / shares	90.28
Exercisable-Weighted Average Exercise Price \| $ / shares	$ 86.99

Share-Based Compensation (Summary of Stock Option Contract Term and Intrinsic Value) (Details) $ in Millions	12 Months Ended
	Sep. 30, 2016 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted Average Remaining Contractual Terms, Outstanding	5 years
Aggregated Intrinsic Value, Outstanding	$ 235
Weighted Average Remaining Contractual Terms, Exercisable	4 years 8 months
Aggregated Intrinsic Value, Exercisable	$ 224

Share-Based Compensation (Summary Of Restricted Stock) (Details) - Restricted Stock [Member] shares in Thousands	12 Months Ended
	Sep. 30, 2016 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding - Shares, Beginning \| shares	83
Granted - Shares \| shares	33
Vested - Shares \| shares	(31)
Outstanding - Shares, Ending \| shares	85
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding - Weighted Average Grant Date Fair Value, Beginning \| $ / shares	$ 121.17
Granted - Weighted Average Grant Date Fair Value \| $ / shares	138
Vested - Weighted Average Grant Date Fair Value \| $ / shares	119.95
Outstanding - Weighted Average Grant Date Fair Value, Ending \| $ / shares	$ 128.16

Accumulated Other Comprehensive Loss (Rollforward) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ (2,125.9)	$ (1,241.9)	$ (1,020.6)
Other comprehensive income (loss) before reclassifications	(311.5)	(1,012.8)	(302.5)
Amounts reclassified from AOCL	53.9	117.8	75.6
Net current period other comprehensive income (loss)	(257.6)	(895.0)	(226.9)
Amount attributable to noncontrolling interest	4.8	(11.0)	(5.6)
Ending Balance	(2,388.3)	(2,125.9)	(1,241.9)
Net loss on derivatives qualifying as hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(42.9)	(28.5)	(4.1)
Other comprehensive income (loss) before reclassifications	13.7	(35.0)	(15.2)
Amounts reclassified from AOCL	(36.0)	20.8	(9.1)
Net current period other comprehensive income (loss)	(22.3)	(14.2)	(24.3)
Amount attributable to noncontrolling interest	(0.2)	0.2	0.1
Ending Balance	(65.0)	(42.9)	(28.5)
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(956.5)	(268.7)	(61.5)
Other comprehensive income (loss) before reclassifications	9.9	(699.3)	(213.1)
Amounts reclassified from AOCL	2.7	0.0	0.0
Net current period other comprehensive income (loss)	12.6	(699.3)	(213.1)
Amount attributable to noncontrolling interest	5.4	(11.5)	(5.9)
Ending Balance	(949.3)	(956.5)	(268.7)
Pension and postretirement benefits [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(1,126.5)	(944.7)	(955.0)
Other comprehensive income (loss) before reclassifications	(335.1)	(278.5)	(74.2)
Amounts reclassified from AOCL	87.2	97.0	84.7
Net current period other comprehensive income (loss)	(247.9)	(181.5)	10.5
Amount attributable to noncontrolling interest	(0.4)	0.3	0.2
Ending Balance	$ (1,374.0)	$ (1,126.5)	$ (944.7)

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]

Accumulated Other Comprehensive Loss (Reclassification) (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Sep. 30, 2016

Jun. 30, 2016

Mar. 31, 2016

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

Mar. 31, 2015

Dec. 31, 2014

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Other income (expense), net

$ 58.1

$ 47.3

$ 52.8

115.5

103.5

125.1

Income (Loss) from discontinued operations, net of tax

$ 394.0

$ 346.8

$ (473.3)

$ 363.6

$ 344.5

$ 318.8

$ 290.0

$ 324.6

631.1

1,277.9

991.7

(884.2)

(6.8)

(2.9)

Reclassification Out Of Accumulated Other Comprehensive Income [Member] | (Gain) Loss on Cash Flow Hedges [Member]

Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]

Sales/cost of sales

(0.2)

(0.6)

(0.7)

Other income (expense), net

46.2

(16.9)

8.7

10.0

3.3

(1.1)

Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Pension and postretirement benefits [Member]

36.0

(20.8)

9.1

Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]

Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Accumulated Translation Adjustment [Member]

^[1]

(87.2)

(97.0)

(84.7)

Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]

Supplemental Information [Line Items]

^[2]

$ (2.7)

$ 0.0

[1]	The components include items such as prior service cost amortization, actuarial loss amortization, and settlements and are reflected in net periodic benefit cost. Refer to Note 16, Retirement Benefits.
[2]	The impact is reflected in Other income (expense), net and primarily relates to the sale of an equity affiliate in the first quarter of 2016. Refer to Note 8, Summarized Financial Information of Equity Affiliates.

Noncontrolling Interests (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jul. 31, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2015
Noncontrolling Interest [Line Items]
Payment for repurchase of redeemable noncontrolling interest			$ 277.9
Goodwill and intangible asset impairment charge		$ 0.0	$ 0.0	$ 310.1
Indura [Member]
Noncontrolling Interest [Line Items]
Minority interest ownership percentage under put option					30.50%
Percentage equity interest purchased	30.50%
Payment for repurchase of redeemable noncontrolling interest	$ 277.9
Sale of Stock, Percentage of Ownership after Transaction		97.80%

Noncontrolling Interests (Rollforward Redeemable Noncontrolling Interest) (Details) $ in Millions	12 Months Ended
	Sep. 30, 2015 USD ($)
Redeemable Noncontrolling Interest [Line Items]
Balance, beginning of period	$ 287.2
Net income (loss)	11.5
Dividends	(2.0)
Purchase of noncontrolling interest	(277.9)
Currency translation adjustment	(18.8)
Balance, end of period	$ 0.0

Earnings per Share (Schedule of Earnings per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share
Income from continuing operations	$ 402.0	$ 355.7	$ 379.8	$ 377.8	$ 346.0	$ 320.5	$ 291.9	$ 326.3	$ 1,515.3	$ 1,284.7	$ 994.6
Income from discontinued operations	(8.0)	(8.9)	(853.1)	(14.2)	(1.5)	(1.7)	(1.9)	(1.7)	(884.2)	(6.8)	(2.9)
Net Income Attributable to Air Products	$ 394.0	$ 346.8	$ (473.3)	$ 363.6	$ 344.5	$ 318.8	$ 290.0	$ 324.6	$ 631.1	$ 1,277.9	$ 991.7
Weighted average number of common shares outstanding									216.4	214.9	212.7
Employee stock option and other award plans									1.9	2.4	2.5
Weighted average number of common shares outstanding assuming dilution									218.3	217.3	215.2
Income from Continuing Operations, Basic	$ 1.85	$ 1.64	$ 1.76	$ 1.75	$ 1.61	$ 1.49	$ 1.36	$ 1.53	$ 7	$ 5.98	$ 4.68
Income (loss) from Discontinued Operations, Basic	(0.04)	(0.04)	(3.95)	(0.07)	(0.01)	(0.01)	(0.01)	(0.01)	(4.08)	(0.03)	(0.02)
Net Income Attributable to Air Products	1.81	1.6	(2.19)	1.68	1.6	1.48	1.35	1.52	2.92	5.95	4.66
Income from Continuing Operations, Diluted	1.84	1.63	1.74	1.73	1.59	1.48	1.34	1.51	6.94	5.91	4.62
Income from Discontinued Operations, Diluted	(0.04)	(0.04)	(3.91)	(0.06)	(0.01)	(0.01)	(0.01)	(0.01)	(4.05)	(0.03)	(0.01)
Net Income Attributable to Air Products	$ 1.8	$ 1.59	$ (2.17)	$ 1.67	$ 1.58	$ 1.47	$ 1.33	$ 1.5	$ 2.89	$ 5.88	$ 4.61

Earnings per Share (Narrative) (Details) - shares shares in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share
Antidilutive options excluded from computation of diluted earnings per share	0.2	0.2	0.6

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Income Taxes (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2016	Sep. 30, 2013
Income Taxes [Line Items]
Cash paid for taxes (net of cash refunds)		$ 440.8	$ 392.9	$ 160.6
U.S. federal statutory tax rate		35.00%	35.00%	35.00%
Goodwill impairment charge	$ 305.2
Goodwill impairment charge deductible for tax purposes				$ 0.0
Tax credits and other tax carryforwards		$ 56.0	$ 43.8
Tax loss carryforwards		93.0	116.7
Deferred tax assets, valuation allowance		$ 155.2	103.6
Percentage of the undistributed earnings in countries with a statutory tax rate of 24% or higher		80.00%
Statutory tax rate percentage or higher		24.00%
Business separation additional income tax expense		$ 51.8
Foreign earnings repatriated		443.8
Cumulative undistributed earnings		6,300.9
US Income and foreign withholding taxes estimate		1,467.8
Unrecognized tax benefits	$ 108.7	106.9	97.5	108.7		$ 124.3
Unrecognized tax benefits that would impact effective tax rate		64.5	62.5
Interest and penalties related to unrecognized tax benefits		2.3	(1.8)	1.2
Accrued interest and penalties		9.8	7.5
Unrecognized tax benefits, decreases resulting from prior period tax positions		0.3	7.9	14.6
Unrecognized tax benefits,decreases resulting from settlements with taxing authorities		5.6	$ 0.6	$ 0.0
Chilean Tax Rate Change [Member]
Income Taxes [Line Items]
Effective income tax rate reconciliation, change in enacted tax rate				1.50%
Income tax expense from tax reform				$ 20.6
Non-U.S. Subsidiary Tax Election [Member]
Income Taxes [Line Items]
Increase (decrease) in income tax expense				$ (51.6)
Federal [Member]
Income Taxes [Line Items]
Capital loss carryforwards		137.1
Tax credit carryforwards		$ 25.7
Federal [Member] \| Capital Loss Carryforward [Member]
Income Taxes [Line Items]
Tax carryforward expiration period end		2019
Tax loss carryforwards		$ 48.0
Federal [Member] \| Tax Credit Carryforward [Member]
Income Taxes [Line Items]
Tax carryforward expiration period start		2025
Federal [Member] \| Loss and Tax Credit Member [Member]
Income Taxes [Line Items]
Tax carryforward expiration period end		2026
Foreign [Member]
Income Taxes [Line Items]
Tax credit carryforwards		$ 27.0
Operating loss carryforwards		155.0
Unused carryforwards and credits that have an expiration period		119.5
Tax loss carryforwards		$ 37.7
Foreign [Member] \| Loss and Tax Credit Member [Member]
Income Taxes [Line Items]
Tax carryforward expiration period start		2017
Tax carryforward expiration period end		2026
State [Member]
Income Taxes [Line Items]
Tax credit carryforwards		$ 3.3
Operating loss carryforwards		$ 123.2
State [Member] \| Loss and Tax Credit Member [Member]
Income Taxes [Line Items]
Tax carryforward expiration period start		2018
Tax carryforward expiration period end		2034
Energy From Waste [Member]
Income Taxes [Line Items]
Deferred tax assets, valuation allowance					$ 58.0
Deferred tax assets capital loss carryforwards		$ 58.0
Unrecognized tax benefits					$ 7.9

Income Taxes (Income Of U.S And Foreign Operations Before Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Income (Loss) from Continuing Operations before Income Taxes, United States	$ 897.5	$ 742.0	$ 562.2
Income (Loss) from Continuing Operations before Income Taxes, Foreign	1,086.1	846.2	651.8
Income (Loss) from Equity Method Investments	148.6	154.5	151.4
Income from Continuing Operations before Taxes	$ 2,132.2	$ 1,742.7	$ 1,365.4

Income Taxes (Components of the Income Taxes Provision) (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Sep. 30, 2016

^[1]

Jun. 30, 2016

^[1]

Mar. 31, 2016

^[1]

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

Mar. 31, 2015

Dec. 31, 2014

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Current Income Tax Expense

Federal, Current

$ 237.9

$ 177.1

$ 19.3

State, Current

29.1

16.9

13.0

Foreign, Current

256.6

221.4

211.6

Current Tax Provision

523.6

415.4

243.9

Deferred Income Tax Expense

Federal, Deferred

42.2

(3.5)

98.2

State, Deferred

3.6

19.1

(2.7)

Foreign, Deferred

17.1

(12.7)

30.0

Deferred Tax Provision

62.9

2.9

125.5

Income tax provision

$ 138.6

$ 179.5

$ 132.5

$ 135.9

$ 119.4

$ 104.1

$ 87.7

$ 107.1

$ 586.5

^[1]

$ 418.3

$ 369.4

[1]	Includes income tax expense for tax costs associated with business separation. For additional information, see Note 3, Materials Technologies Separation.

Income Taxes (Effective Tax Rate Reconciliation) (Details)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
U.S. federal statutory tax rate	35.00%	35.00%	35.00%
State taxes, net of federal benefit	1.10%	1.00%	0.50%
Income from equity affiliates	(2.40%)	(3.00%)	(3.90%)
Foreign tax differentials	(7.00%)	(6.60%)	(8.20%)
U.S. taxes on foreign earnings	(2.30%)	(1.60%)	(1.70%)
Domestic production activities	(0.80%)	(0.90%)	(0.70%)
Non-deductible goodwill impairment charge	0.00%	0.00%	8.00%
Non-U.S. subsidiary tax election	0.00%	0.00%	(3.80%)
Business separation costs	3.10%	0.20%	0.00%
Other	0.80%	(0.10%)	1.90%
Effective Tax Rate	27.50%	24.00%	27.10%

Income Taxes (Significant Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Deferred Tax Assets, Gross [Abstract]
Retirement benefits and compensation accruals	$ 537.9	$ 468.7
Tax loss carryforwards	93.0	116.7
Tax credits and other tax carryforwards	56.0	43.8
Reserves and accruals	80.1	71.9
Partnership and other investments	4.8	6.2
Other	45.8	66.3
Valuation allowance	(155.2)	(103.6)
Deferred Tax Assets	662.4	670.0
Deferred Tax Liabilities, Gross [Abstract]
Plant and equipment	1,034.8	1,124.6
Currency gains	46.4	65.7
Unremitted earnings of foreign entities	5.4	62.7
Intangible assets	134.1	135.6
Other	16.1	2.1
Deferred Tax Liabilities	1,236.8	1,390.7
Net Deferred Income Tax Liabilities	$ 574.4	$ 720.7

Income Taxes (Deferred Tax Assets And Liabilities Included In Consolidated Financials) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Deferred Tax Assets [Abstract]
Other noncurrent assets	$ 192.7	$ 82.7
Deferred Tax Liabilities [Abstract]
Deferred income taxes	767.1	803.4
Net Deferred Income Tax Liabilities	$ 574.4	$ 720.7

Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 97.5	$ 108.7	$ 124.3
Additions for tax positions of the current year	15.0	6.9	8.1
Additions for tax positions of prior years	3.8	7.5	4.9
Reductions for tax positions of prior years	(0.3)	(7.9)	(14.6)
Settlements	(5.6)	(0.6)	0.0
Statute of limitations expiration	(3.0)	(11.2)	(14.0)
Foreign currency translation adjustment decrease	(0.5)	(5.9)	0.0
Balance at End of Year	$ 106.9	$ 97.5	$ 108.7

Income Taxes (Summary Of Income Tax Examinations) (Details)	12 Months Ended
	Sep. 30, 2016
North America [Member] \| United States \| Minimum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2011
North America [Member] \| United States \| Maximum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2016
North America [Member] \| Canada \| Minimum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2012
North America [Member] \| Canada \| Maximum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2016
Europe [Member] \| France \| Minimum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2013
Europe [Member] \| France \| Maximum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2016
Europe [Member] \| Germany \| Minimum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2011
Europe [Member] \| Germany \| Maximum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2016
Europe [Member] \| Netherlands \| Minimum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2011
Europe [Member] \| Netherlands \| Maximum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2016
Europe [Member] \| Spain \| Minimum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2011
Europe [Member] \| Spain \| Maximum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2016
Europe [Member] \| United Kingdom \| Minimum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2013
Europe [Member] \| United Kingdom \| Maximum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2016
Asia [Member] \| China \| Minimum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2010
Asia [Member] \| China \| Maximum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2016
Asia [Member] \| Singapore \| Minimum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2010
Asia [Member] \| Singapore \| Maximum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2016
Asia [Member] \| South Korea \| Minimum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2010
Asia [Member] \| South Korea \| Maximum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2016
Asia [Member] \| Taiwan \| Minimum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2011
Asia [Member] \| Taiwan \| Maximum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2016
Latin America [Member] \| Chile \| Minimum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2013
Latin America [Member] \| Chile \| Maximum [Member]
Income Tax Examination [Line Items]
Open Tax Year	2016

Supplemental Information (Other Receivables and Current Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Supplemental Information [Abstract]
Derivative instruments	$ 170.9	$ 72.9
Other receivables	197.5	167.6
Current capital lease receivables	88.2	84.2
Prepaid inventory	92.8	0.0
Other	6.2	18.8
Other receivables and current assets, total	$ 555.6	$ 343.5

Supplemental Information (Other Noncurrent Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Supplemental Information [Abstract]
Derivative instruments	$ 204.4	$ 246.0
Other long-term receivables	20.6	21.4
Deferred financing cost, net	29.6	20.2
Prepaid tax	53.5	31.3
Deferred tax assets	192.7	82.7
Deposits	36.5	40.1
Other	200.0	206.9
Other noncurrent assets total	$ 737.3	$ 648.6

Supplemental Information (Payables and Accrued Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Supplemental Information [Abstract]
Trade creditors	$ 676.1	$ 621.9
Customer advances	376.1	195.3
Accrued payroll and employee benefits	262.6	272.9
Pension and postretirement benefits	35.5	26.1
Dividends payable	186.9	174.4
Outstanding payments in excess of certain cash balances	11.9	27.5
Accrued interest expense	47.9	52.9
Derivative instruments	74.0	114.6
Severance and other costs associated with business restructuring and cost reduction actions	16.3	41.7
Other	123.3	114.4
Payables and accrued liabilities total	$ 1,810.6	$ 1,641.7

Supplemental Information (Other Noncurrent Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Liabilities, Noncurrent [Abstract]
Pension benefits	$ 1,186.8	$ 860.0
Postretirement benefits	74.9	76.5
Other employee benefits	108.3	106.7
Contingencies related to uncertain tax positions	95.6	91.1
Advance payments	43.8	135.1
Environmental liabilities	70.3	71.6
Derivative instruments	21.8	10.6
Asset retirement obligations	116.1	106.5
Obligation for future contribution to equity affiliate	94.4	67.5
Other	61.4	28.4
Other noncurrent liabilities total	$ 1,873.4	$ 1,554.0

Supplemental Information (Other Income Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Other Income (Expense) [Abstract]
Technology and royalty income	$ 20.1	$ 25.0	$ 26.8
Interest income	6.2	4.6	9.4
Foreign exchange	(5.8)	(22.3)	(7.7)
Sale of assets and investments	10.1	37.1	12.5
Contract settlements	12.6	0.0	2.8
Other	14.9	2.9	9.0
Total Other Income (Expense), net	$ 58.1	$ 47.3	$ 52.8

Supplemental Information (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions

3 Months Ended

12 Months Ended

Sep. 30, 2015

Jun. 30, 2015

^[1]

Mar. 31, 2015

^[1]

Dec. 31, 2014

^[1]

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Segment Reconciling Items [Member]

$ 10.1

$ 37.1

$ 12.5

Supplemental Information [Line Items]

Gain on land sales, after-tax

$ 33.6

^[1]

$ 0.0

^[2]

$ 33.6

^[1],[2]

$ 0.0

^[2]

$ 28.3

Gain on land sales, per share

$ 0.13

[1]	The gain is reflected on the consolidated income statements in “Other income (expense), net.” For additional information, see Note 24, Supplemental Information.
[2]	Reflected on the consolidated income statements in "Other income (expense), net."

Summary by Quarter (Unaudited) (Details) - USD ($)
$ / shares in Units, $ in Millions

3 Months Ended

12 Months Ended

Sep. 30, 2016

Jun. 30, 2016

Mar. 31, 2016

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

Mar. 31, 2015

Dec. 31, 2014

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Quarterly Financial Information Disclosure [Abstract]

Sales

$ 2,463.0

$ 2,434.4

$ 2,271.2

$ 2,355.8

$ 2,449.4

$ 2,470.2

$ 2,414.5

$ 2,560.8

$ 9,524.4

$ 9,894.9

$ 10,439.0

Gross profit

814.3

^[1]

795.1

^[1]

752.2

^[1]

760.1

^[1]

753.5

755.0

716.3

731.1

3,121.7

^[1]

2,955.9

Business separation costs, before tax

23.3

^[2]

9.5

^[2]

7.4

^[2]

12.0

^[2]

7.5

^[2]

0.0

^[2]

0.0

^[2]

0.0

^[2]

52.2

^[2]

7.5

^[2]

0.0

11.1

^[3]

14.2

^[3]

8.6

^[3]

0.0

^[3]

61.7

^[3]

58.2

^[3]

55.4

^[3]

32.4

^[3]

33.9

^[3]

207.7

^[3]

12.7

2.8

^[4]

1.0

^[4]

2.6

^[4]

0.0

^[4]

7.0

^[4]

1.6

^[4]

12.6

^[4]

0.0

^[4]

6.4

^[4]

21.2

^[4]

5.5

0.0

^[5]

0.0

^[5]

0.0

^[5]

17.9

^[5]

0.0

17.9

0.0

10.1

37.1

12.5

Operating income (loss)

547.0

535.1

513.3

510.6

474.3

424.8

376.9

432.3

2,106.0

1,708.3

1,339.1

Net Income (Loss), Including Portion Attributable to Noncontrolling Interest [Abstract]

6.9

^[6]

0.0

^[6]

0.0

^[6]

0.0

^[6]

16.6

^[6]

0.0

^[6]

0.0

^[6]

0.0

^[6]

6.9

^[6]

16.6

^[6]

0.0

Income tax provision

138.6

^[7]

179.5

^[7]

132.5

^[7]

135.9

119.4

104.1

87.7

107.1

586.5

^[7]

418.3

369.4

Net income

400.9

354.1

(465.5)

372.0

350.0

333.2

296.9

337.5

661.5

1,317.6

993.1

Income from continuing operations attributable to Air Products

402.0

355.7

379.8

377.8

346.0

320.5

291.9

326.3

1,515.3

1,284.7

994.6

Income (Loss) from discontinued operations, net of tax, attributable to Air Products

(8.0)

(8.9)

(853.1)

(14.2)

(1.5)

(1.7)

(1.9)

(1.7)

(884.2)

(6.8)

(2.9)

Basic Earnings Per Common Share Attributable to Air Products

$ 394.0

$ 346.8

$ (473.3)

$ 363.6

$ 344.5

$ 318.8

$ 290.0

$ 324.6

$ 631.1

$ 1,277.9

$ 991.7

$ 1.85

$ 1.64

$ 1.76

$ 1.75

$ 1.61

$ 1.49

$ 1.36

$ 1.53

$ 7

$ 5.98

$ 4.68

(0.04)

(3.95)

(0.07)

(0.01)

(4.08)

(0.03)

(0.02)

Diluted Earnings Per Common Share Attributable to Air Products

1.81

1.6

(2.19)

1.68

1.6

1.48

1.35

1.52

2.92

5.95

4.66

1.84

1.63

1.74

1.73

1.59

1.48

1.34

1.51

6.94

5.91

4.62

(0.04)

(3.91)

(0.06)

(0.01)

(4.05)

(0.03)

(0.01)

Dividends per common share

1.8

1.59

(2.17)

1.67

1.58

1.47

1.33

1.5

2.89

5.88

4.61

0.86

0.81

0.77

$ 3.39

$ 3.2

$ 3.02

Market Price Per Share High

157.84

152.16

147.16

143.83

148.56

153.93

158.2

149.61

Market Price Per Share Low

$ 137.31

$ 134.15

$ 114.64

$ 126.65

$ 123.66

$ 136.69

$ 137.07

$ 118.2

Segment Reconciling Items [Member]

Quarterly Financial Information Disclosure [Abstract]

Business separation costs, before tax

$ 52.2

$ 7.5

$ 0.0

33.9

207.7

12.7

6.4

21.2

5.5

0.0

17.9

0.0

Segment Reporting Information [Line Items]

$ 33.6

^[8]

$ 0.0

^[8]

$ 0.0

^[8]

$ 0.0

^[8]

$ 0.0

^[9]

$ 33.6

^[8],[9]

$ 0.0

^[9]

[1]	Changes in estimates on projects accounted for under the percentage of completion method favorably impacted income by approximately $20 in fiscal year 2016, primarily during the fourth quarter. For additional information, see Note 1, Major Accounting Policies (Revenue Recognition).
[2]	For additional information, see Note 3, Materials Technologies Separation.
[3]	For additional information, see Note 5, Business Restructuring and Cost Reduction Actions.
[4]	For additional information, see Note 16, Retirement Benefits.
[5]	For additional information, see Note 6, Business Combination.
[6]	For additional information, see Note 15, Debt.
[7]	Includes income tax expense for tax costs associated with business separation. For additional information, see Note 3, Materials Technologies Separation.
[8]	The gain is reflected on the consolidated income statements in “Other income (expense), net.” For additional information, see Note 24, Supplemental Information.
[9]	Reflected on the consolidated income statements in "Other income (expense), net."

Business Segment and Geographic Information (Narratives) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Export sales to third-party customers									$ 307.7	$ 398.8	$ 378.7
Sales	$ 2,463.0	$ 2,434.4	$ 2,271.2	$ 2,355.8	$ 2,449.4	$ 2,470.2	$ 2,414.5	$ 2,560.8	9,524.4	9,894.9	10,439.0
Industrial Gases - Global [Member]
Segment Reporting Information [Line Items]
Sales									498.8	286.8	296.0
Industrial Gases - Global [Member] \| Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Sales									$ 232.4	$ 242.8	$ 192.4

Business Segment and Geographic Information (Schedule of Segment Reporting Information) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Sales	$ 2,463.0	$ 2,434.4	$ 2,271.2	$ 2,355.8	$ 2,449.4	$ 2,470.2	$ 2,414.5	$ 2,560.8	$ 9,524.4	$ 9,894.9	$ 10,439.0
Operating income (loss)	547.0	$ 535.1	$ 513.3	$ 510.6	474.3	$ 424.8	$ 376.9	$ 432.3	2,106.0	1,708.3	1,339.1
Depreciation and amortization									925.9	936.4	956.9
Equity affiliates' income									148.6	154.5	151.4
Expenditures for long-lived assets									1,055.8	1,265.6	1,362.7
Investment in net assets of and advances to equity affiliates	1,288.1				1,265.7				1,288.1	1,265.7
Total assets	18,055.3				17,334.5				18,055.3	17,334.5	17,668.3
Segment Total [Member]
Segment Reporting Information [Line Items]
Sales									9,524.4	9,894.9	10,439.0
Operating income (loss)									2,198.5	1,893.2	1,667.4
Depreciation and amortization									925.9	936.4	956.9
Equity affiliates' income									148.6	154.5	151.4
Expenditures for long-lived assets									1,055.8	1,265.6	1,362.7
Investment in net assets of and advances to equity affiliates	1,288.1				1,265.7				1,288.1	1,265.7	1,257.9
Total assets	18,035.9				16,440.9				18,035.9	16,440.9	17,076.9
Industrial Gases - Americas [Member]
Segment Reporting Information [Line Items]
Sales									3,343.6	3,693.9	4,078.5
Operating income (loss)									895.2	808.4	762.6
Depreciation and amortization									442.5	416.9	414.4
Equity affiliates' income									52.7	64.6	60.9
Expenditures for long-lived assets									406.6	414.5	484.2
Investment in net assets of and advances to equity affiliates	250.6				249.7				250.6	249.7	234.3
Total assets	5,889.2				5,774.9				5,889.2	5,774.9	6,240.7
Industrial Gases - EMEA [Member]
Segment Reporting Information [Line Items]
Sales									1,700.3	1,864.9	2,150.7
Operating income (loss)									382.8	330.7	351.2
Depreciation and amortization									185.7	194.3	220.2
Equity affiliates' income									36.5	42.4	44.1
Expenditures for long-lived assets									159.5	215.6	239.1
Investment in net assets of and advances to equity affiliates	580.5				564.1				580.5	564.1	552.9
Total assets	3,178.6				3,323.9				3,178.6	3,323.9	3,521.0
Industrial Gases - Asia [Member]
Segment Reporting Information [Line Items]
Sales									1,716.1	1,637.5	1,527.0
Operating income (loss)									449.1	380.5	310.4
Depreciation and amortization									197.1	202.9	205.3
Equity affiliates' income									57.8	46.1	38.0
Expenditures for long-lived assets									313.3	402.5	430.3
Investment in net assets of and advances to equity affiliates	442.5				421.7				442.5	421.7	434.1
Total assets	4,232.7				4,154.0				4,232.7	4,154.0	4,045.6
Industrial Gases - Global [Member]
Segment Reporting Information [Line Items]
Sales									498.8	286.8	296.0
Operating income (loss)									(21.3)	(51.6)	(57.3)
Depreciation and amortization									7.9	16.5	7.1
Equity affiliates' income									(0.1)	(0.8)	5.8
Expenditures for long-lived assets									6.0	94.8	77.7
Investment in net assets of and advances to equity affiliates	10.0				14.3				10.0	14.3	18.8
Total assets	367.6				370.5				367.6	370.5	389.4
Materials Technologies [Member]
Segment Reporting Information [Line Items]
Sales									2,019.5	2,087.1	2,064.6
Operating income (loss)									530.2	476.7	379.0
Depreciation and amortization									77.4	92.8	99.1
Equity affiliates' income									1.7	2.2	2.6
Expenditures for long-lived assets									147.9	102.5	64.2
Investment in net assets of and advances to equity affiliates	4.5				15.9				4.5	15.9	17.8
Total assets	1,787.0				1,741.9				1,787.0	1,741.9	1,835.7
Corporate and other [Member]
Segment Reporting Information [Line Items]
Sales									246.1	324.7	322.2
Operating income (loss)									(37.5)	(51.5)	(78.5)
Depreciation and amortization									15.3	13.0	10.8
Equity affiliates' income									0.0	0.0	0.0
Expenditures for long-lived assets									22.5	35.7	67.2
Investment in net assets of and advances to equity affiliates	0.0				0.0				0.0	0.0	0.0
Total assets	$ 2,580.8				$ 1,075.7				$ 2,580.8	$ 1,075.7	$ 1,044.5

Business Segment and Geographic Information (Reconciliation of Operating Income) (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Sep. 30, 2016

Jun. 30, 2016

Mar. 31, 2016

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

Mar. 31, 2015

Dec. 31, 2014

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Business separation costs

$ (23.3)

^[1]

$ (9.5)

^[1]

$ (7.4)

^[1]

$ (12.0)

^[1]

$ (7.5)

^[1]

$ 0.0

^[1]

$ 0.0

^[1]

$ 0.0

^[1]

$ (52.2)

^[1]

$ (7.5)

^[1]

$ 0.0

(11.1)

^[2]

(14.2)

^[2]

(8.6)

^[2]

0.0

^[2]

(61.7)

^[2]

(58.2)

^[2]

(55.4)

^[2]

(32.4)

^[2]

(33.9)

^[2]

(207.7)

^[2]

(12.7)

(2.8)

^[3]

(1.0)

^[3]

(2.6)

^[3]

0.0

^[3]

(7.0)

^[3]

(1.6)

^[3]

(12.6)

^[3]

0.0

^[3]

(6.4)

^[3]

(21.2)

^[3]

(5.5)

0.0

(310.1)

0.0

^[4]

0.0

^[4]

0.0

^[4]

17.9

^[4]

0.0

17.9

0.0

Segment Reporting Information [Line Items]

10.1

37.1

12.5

Operating Income

$ 547.0

$ 535.1

$ 513.3

$ 510.6

474.3

424.8

376.9

432.3

2,106.0

1,708.3

1,339.1

Segment Total [Member]

Operating Income

2,198.5

1,893.2

1,667.4

Segment Reconciling Items [Member]

Segment Reporting Information [Line Items]

Business separation costs

(52.2)

(7.5)

0.0

(33.9)

(207.7)

(12.7)

(6.4)

(21.2)

(5.5)

0.0

(310.1)

0.0

17.9

0.0

Revenue from External Customers and Long-Lived Assets [Line Items]

$ 33.6

^[5]

$ 0.0

^[5]

$ 0.0

^[5]

$ 0.0

^[5]

$ 0.0

^[6]

$ 33.6

^[5],[6]

$ 0.0

^[6]

[1]	For additional information, see Note 3, Materials Technologies Separation.
[2]	For additional information, see Note 5, Business Restructuring and Cost Reduction Actions.
[3]	For additional information, see Note 16, Retirement Benefits.
[4]	For additional information, see Note 6, Business Combination.
[5]	The gain is reflected on the consolidated income statements in “Other income (expense), net.” For additional information, see Note 24, Supplemental Information.
[6]	Reflected on the consolidated income statements in "Other income (expense), net."

Business Segment Information (Reconciliation of Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Total Assets	$ 18,055.3	$ 17,334.5	$ 17,668.3
Segment Total [Member]
Segment Reporting Information [Line Items]
Total Assets	18,035.9	16,440.9	17,076.9
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Assets of discontinued operations	$ 19.4	$ 893.6	$ 591.4

Business Segment and Geographic Information (Schedule of Geographic Information) (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Sep. 30, 2016

Jun. 30, 2016

Mar. 31, 2016

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

Mar. 31, 2015

Dec. 31, 2014

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

$ 2,463.0

$ 2,434.4

$ 2,271.2

$ 2,355.8

$ 2,449.4

$ 2,470.2

$ 2,414.5

$ 2,560.8

$ 9,524.4

$ 9,894.9

$ 10,439.0

Revenue from External Customers and Long-Lived Assets [Line Items]

^[1]

8,852.7

8,745.1

8,852.7

8,745.1

8,941.6

United States

3,792.3

4,280.1

4,507.6

Revenue from External Customers and Long-Lived Assets [Line Items]

^[1]

3,780.2

3,788.5

3,780.2

3,788.5

3,754.2

Canada

225.7

247.1

311.4

Europe, excluding United Kingdom [Member]

^[1]

639.0

577.4

639.0

577.4

518.0

Revenue from External Customers and Long-Lived Assets [Line Items]

Revenue from External Customers and Long-Lived Assets [Line Items]

^[1]

0.0

United Kingdom

Revenue from External Customers and Long-Lived Assets [Line Items]

^[1]

0.0

Europe [Member]

Asia, excluding China [Member]

2,505.9

2,315.4

2,628.0

Revenue from External Customers and Long-Lived Assets [Line Items]

1,382.7

1,395.2

1,389.4

Revenue from External Customers and Long-Lived Assets [Line Items]

^[1]

1,056.5

914.2

1,056.5

914.2

989.9

China

1,176.2

1,129.1

981.0

Revenue from External Customers and Long-Lived Assets [Line Items]

^[1]

1,721.9

1,732.7

1,721.9

1,732.7

1,582.7

Latin America [Member]

441.6

528.0

621.6

Allowance for Doubtful Accounts [Member]

^[1]

$ 349.0

$ 337.3

$ 349.0

$ 337.3

$ 440.1

[1]	Long-lived assets include plant and equipment, net.

Schedule II - Valuation And Qualifying Accounts (Schedule Of Valuation And Qualifying Accounts) (Details) - USD ($)
$ in Millions

12 Months Ended

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2014

Valuation and Qualifying Accounts Disclosure [Line Items]

Balance at Beginning of Period

$ 49

$ 60

$ 102

Charged to Expense

Charged to Other Accounts

Allowance for deferred tax assets [Member]

^[1]

(15)

(37)

(58)

Balance at End of Period

Valuation and Qualifying Accounts Disclosure [Line Items]

Balance at Beginning of Period

104

Charged to Expense

^[2]

Charged to Other Accounts

^[3]