Air Products and Chemicals (APD) 10-Q 9 May 23 2023 Q2 Quarterly report Financial data

Cover

Cover	6 Months Ended
	Mar. 31, 2023 shares
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
Document Transition Report	false
Entity File Number	001-04534
Entity Registrant Name	AIR PRODUCTS AND CHEMICALS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	23-1274455
Entity Address, Address Line One	1940 Air Products Boulevard
Entity Address, City or Town	Allentown
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	18106-5500
City Area Code	610
Local Phone Number	481-4911
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	222,122,719
Entity Central Index Key	0000002969
Current Fiscal Year End Date	--09-30
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
Amendment Flag	false
Common Stock, par value $1.00 per share
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $1.00 per share
Trading Symbol	APD
Security Exchange Name	NYSE
1.000% Euro Notes due 2025
Entity Information [Line Items]
Title of 12(b) Security	1.000% Euro Notes due 2025
Trading Symbol	APD25
Security Exchange Name	NYSE
0.500% Euro Notes due 2028
Entity Information [Line Items]
Title of 12(b) Security	0.500% Euro Notes due 2028
Trading Symbol	APD28
Security Exchange Name	NYSE
0.800% Euro Notes due 2032
Entity Information [Line Items]
Title of 12(b) Security	0.800% Euro Notes due 2032
Trading Symbol	APD32
Security Exchange Name	NYSE
Note 4.800%, Green Bonds
Entity Information [Line Items]
Title of 12(b) Security	4.000% Euro Notes due 2035
Trading Symbol	APD35
Security Exchange Name	NYSE

Consolidated Income Statements

Consolidated Income Statements (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Sales	$ 3,200.1	$ 2,945.1	$ 6,374.8	$ 5,939.3
Cost of sales	2,282.8	2,151.6	4,555.1	4,375.2
Selling and administrative expense	251.2	227	485.6	459.8
Research and development expense	27.2	23.7	51.6	47
Business and asset actions	185.6	0	185.6	0
Other income (expense), net	6.5	19.1	14.9	27.6
Operating Income	459.8	561.9	1,111.8	1,084.9
Equity affiliates' income	165.9	120.8	275.9	268.6
Interest expense	40.9	32.3	82.1	62.8
Other non-operating income (expense), net	(13.9)	9.1	(14.5)	31.7
Income Before Taxes	570.9	659.5	1,291.1	1,322.4
Income tax provision	121	122.7	257.4	236
Net Income	449.9	536.8	1,033.7	1,086.4
Less: Net income (loss) attributable to noncontrolling interests	10.1	6.3	21.7	(4.5)
Net Income Attributable to Air Products	$ 439.8	$ 530.5	$ 1,012	$ 1,090.9
Per Share Data
Basic earnings per share attributable to Air Products	$ 1.98	$ 2.39	$ 4.55	$ 4.91
Basic earnings per share attributable to Air Products	$ 1.97	$ 2.38	$ 4.54	$ 4.90
Weighted Average Common Shares (in millions)
Basic (in shares)	222.3	222	222.3	222
Diluted (in shares)	222.7	222.5	222.7	222.5

Consolidated Comprehensive Inco

Consolidated Comprehensive Income Statements (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net Income	$ 449.9	$ 536.8	$ 1,033.7	$ 1,086.4
Other Comprehensive Income (Loss), net of tax:
Translation adjustments, net of tax	51	(58.8)	560.6	(18.2)
Net gain (loss) on derivatives, net of tax	(14.6)	(39.4)	106.4	(39.9)
Pension and postretirements benefits, net of tax			6.7	0
Reclassification adjustments:
Currency translation adjustment	(0.3)	0	(0.3)	0
Derivatives, net of tax	5.8	26	(62.9)	44.7
Pension and postretirement benefits, net of tax	14.4	15.9	26.3	31.9
Total Other Comprehensive Income (Loss)	56.3	(56.3)	636.8	18.5
Comprehensive Income	506.2	480.5	1,670.5	1,104.9
Net Income Attributable to Noncontrolling Interests	10.1	6.3	21.7	(4.5)
Other Comprehensive Income (Loss) Attributable to Noncontrolling Interests	1.3	(3)	14	8.2
Comprehensive Income Attributable to Air Products	$ 494.8	$ 477.2	$ 1,634.8	$ 1,101.2

Consolidated Comprehensive In_2

Consolidated Comprehensive Income Statements (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Tax effect on translation adjustments	$ (10.6)	$ 9.2	$ (48.6)	$ 16.8
Tax effect on net gain (loss) on derivatives	(0.6)	(15.3)	37.6	(26.4)
Tax effect on pension and postretirement benefits			2.4	0
Tax effect on derivatives reclassification adjustments	1.9	8.6	(19.8)	14.7
Tax effect on pension and postretirement benefits reclassification adjustments	$ 4.7	$ 5.5	$ 8.4	$ 10.9

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2023	Sep. 30, 2022
Current Assets
Cash and cash items	$ 2,242.4	$ 2,711
Short-term investments	271.3	590.7
Trade receivables, net	1,714.7	1,794.4
Inventories	645.6	514.2
Prepaid expenses	224.7	156.8
Other receivables and current assets	622.9	515.8
Total Current Assets	5,721.6	6,282.9
Investment in net assets of and advances to equity affiliates	4,420.2	3,353.8
Plant and equipment, at cost	30,751.8	28,160.1
Less: accumulated depreciation	15,053.4	13,999.6
Plant and equipment, net	15,698.4	14,160.5
Goodwill, net	883.9	823
Intangible assets, net	367.2	347.5
Operating lease right-of-use assets, net	766.9	694.8
Noncurrent lease receivables	561.7	583.1
Other noncurrent assets	1,015.5	947
Total Noncurrent Assets	23,713.8	20,909.7
Total Assets	29,435.4	27,192.6
Current Liabilities
Payables and accrued liabilities	2,489.3	2,771.6
Accrued income taxes	128.2	135.2
Short-term borrowings	7	10.7
Current portion of long-term debt	173.4	548.3
Total Current Liabilities	2,797.9	3,465.8
Long-term debt	8,271.9	6,433.8
Long-term debt – related party	688.6	652
Noncurrent operating lease liabilities	632.3	592.1
Other noncurrent liabilities	1,096.3	1,099.1
Deferred income taxes	1,258.2	1,247.4
Total Noncurrent Liabilities	11,947.3	10,024.4
Total Liabilities	14,745.2	13,490.2
Commitments and Contingencies - See Note 13
Air Products Shareholders’ Equity
Common stock (par value $1 per share; issued 2023 and 2022 - 249,455,584 shares)	249.4	249.4
Capital in excess of par value	1,163.4	1,141.4
Retained earnings	16,781.3	16,520.3
Accumulated other comprehensive loss	(2,163.3)	(2,786.1)
Treasury stock, at cost (2023 - 27,332,865 shares; 2022 - 27,616,888 shares)	(1,972.5)	(1,981)
Total Air Products Shareholders’ Equity	14,058.3	13,144
Noncontrolling Interests	631.9	558.4
Total Equity	14,690.2	13,702.4
Total Liabilities and Equity	$ 29,435.4	$ 27,192.6

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Mar. 31, 2023	Sep. 30, 2022
Air Products Shareholders’ Equity
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, issued shares		249,455,584
Treasury stock at cost, shares	27,332,865	27,616,888

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating Activities
Net Income	$ 1,033.7	$ 1,086.4
Less: Net income (loss) attributable to noncontrolling interests	21.7	(4.5)
Net income attributable to Air Products	1,012	1,090.9
Adjustments to reconcile income to cash provided by operating activities:
Depreciation and amortization	661.1	668.2
Deferred income taxes	29	51.3
Business and asset actions	185.6	0
Undistributed earnings of equity method investments	(78.1)	(200.8)
Gain on sale of assets and investments	(3.9)	(11.8)
Share-based compensation	31.2	26.5
Noncurrent lease receivables	39.5	43.9
Other adjustments	70.9	(101)
Working capital changes that provided (used) cash, excluding effects of acquisitions:
Trade receivables	162	(203.1)
Inventories	(112.3)	(57.3)
Other receivables	(63)	13.8
Payables and accrued liabilities	(451.3)	123.1
Other working capital	(124.7)	(138.7)
Cash Provided by Operating Activities	1,358	1,305
Investing Activities
Additions to plant and equipment, including long-term deposits	(1,841.1)	(1,433.6)
Acquisitions, less cash acquired	0	(65.1)
Investment in and advances to unconsolidated affiliates	(912)	(1,650.9)
Proceeds from sale of assets and investments	7.2	25.3
Purchases of investments	(290.5)	(909.4)
Proceeds from investments	611.6	1,391.4
Other investing activities	(51.2)	6.5
Cash Used for Investing Activities	(2,476)	(2,635.8)
Financing Activities
Long-term debt proceeds	1,891.6	87.5
Payments on long-term debt	(596)	(400)
Net (decrease) increase in commercial paper and short-term borrowings	(16.3)	210.9
Dividends paid to shareholders	(719.2)	(664.7)
Proceeds from stock option exercises	17.1	14.4
Investments by noncontrolling interests	72.8	3.6
Other financing activities	(46.6)	(37.3)
Cash Provided by (Used for) Financing Activities	603.4	(785.6)
Effect of Exchange Rate Changes on Cash	46	(3.8)
Decrease in cash and cash items	(468.6)	(2,120.2)
Cash and Cash items – Beginning of year	2,711	4,468.9
Cash and Cash Items – End of Period	$ 2,242.4	$ 2,348.7

Consolidated Statements of Equi

Consolidated Statements of Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Air Products Shareholders' Equity	Non- controlling Interests
Beginning balance at Sep. 30, 2021	$ 14,088	$ 249.4	$ 1,115.8	$ 15,678.3	$ (1,515.9)	$ (1,987.9)	$ 13,539.7	$ 548.3
Stockholders' Equity [Roll Forward]
Net income	1,086.4			1,090.9			1,090.9	(4.5)
Other comprehensive income (loss)	18.5				10.3		10.3	8.2
Dividends on common stock	(691.8)			(691.8)			(691.8)
Dividends to noncontrolling interests	(1)							(1)
Share-based compensation	25.7		25.7				25.7
Issuance of treasury shares for stock option and award plans	(18.5)		(21)			2.5	(18.5)
Investments by noncontrolling interests	3.6							3.6
Purchase of noncontrolling interests	(1.9)		0				0	(1.9)
Other equity transactions	1.7		0.3	(1.5)			(1.2)	2.9
Ending balance at Mar. 31, 2022	14,510.7	249.4	1,120.8	16,075.9	(1,505.6)	(1,985.4)	13,955.1	555.6
Beginning balance at Dec. 31, 2021	14,375.6	249.4	1,112	15,905.2	(1,452.3)	(1,989.2)	13,825.1	550.5
Stockholders' Equity [Roll Forward]
Net income	536.8			530.5			530.5	6.3
Other comprehensive income (loss)	(56.3)				(53.3)		(53.3)	(3)
Dividends on common stock	(359.3)			(359.3)			(359.3)
Dividends to noncontrolling interests	(1)							(1)
Share-based compensation	11.6		11.6				11.6
Issuance of treasury shares for stock option and award plans	0.9		(2.9)			3.8	0.9
Other equity transactions	2.4		0.1	(0.5)			(0.4)	2.8
Ending balance at Mar. 31, 2022	14,510.7	249.4	1,120.8	16,075.9	(1,505.6)	(1,985.4)	13,955.1	555.6
Beginning balance at Sep. 30, 2022	13,702.4	249.4	1,141.4	16,520.3	(2,786.1)	(1,981)	13,144	558.4
Stockholders' Equity [Roll Forward]
Net income	1,033.7			1,012			1,012	21.7
Other comprehensive income (loss)	636.8				622.8		622.8	14
Dividends on common stock	(748.5)			(748.5)			(748.5)
Dividends to noncontrolling interests	(5.6)							(5.6)
Share-based compensation	29		29				29
Issuance of treasury shares for stock option and award plans	1.2		(7.3)			8.5	1.2
Investments by noncontrolling interests	72.8							72.8
Other equity transactions	(31.6)		0.3	(2.5)			(2.2)	(29.4)
Ending balance at Mar. 31, 2023	14,690.2	249.4	1,163.4	16,781.3	(2,163.3)	(1,972.5)	14,058.3	631.9
Beginning balance at Dec. 31, 2022	14,517.4	249.4	1,148.4	16,731.4	(2,218.3)	(1,975.2)	13,935.7	581.7
Stockholders' Equity [Roll Forward]
Net income	449.9			439.8			439.8	10.1
Other comprehensive income (loss)	56.3				55		55	1.3
Dividends on common stock	(388.7)			(388.7)			(388.7)	0
Dividends to noncontrolling interests	(4.8)							(4.8)
Share-based compensation	14.8		14.8				14.8
Issuance of treasury shares for stock option and award plans	2.8		0.1			2.7	2.8
Investments by noncontrolling interests	72.8							72.8
Purchase of noncontrolling interests	0							0
Other equity transactions	(30.3)		0.1	(1.2)			(1.1)	(29.2)
Ending balance at Mar. 31, 2023	$ 14,690.2	$ 249.4	$ 1,163.4	$ 16,781.3	$ (2,163.3)	$ (1,972.5)	$ 14,058.3	$ 631.9

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Statement of Stockholders' Equity [Abstract]
Dividends per share (in dollars per share)	$ 1.75	$ 1.62	$ 3.37	$ 3.12

Basis of Presentation and Major

Basis of Presentation and Major Accounting Policies	6 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Basis of Presentation and Major Accounting Policies	BASIS OF PRESENTATION AND MAJOR ACCOUNTING POLICIES Basis of Presentation The interim consolidated financial statements of Air Products and Chemicals, Inc. and its subsidiaries (“we,” “our,” “us,” the “Company,” “Air Products,” or “registrant”) included herein have been prepared by us, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles ("GAAP") have been condensed or omitted pursuant to such rules and regulations. In our opinion, the accompanying statements reflect adjustments necessary to fairly present the financial position, results of operations, and cash flows for those periods indicated and contain adequate disclosures to make the information presented not misleading. Adjustments included herein are of a normal, recurring nature unless otherwise disclosed in the notes to the interim consolidated financial statements. To fully understand the basis of presentation, the interim consolidated financial statements and related notes included herein should be read in conjunction with the consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended 30 September 2022 (the " 2022 Form 10-K "), which was filed with the SEC on 22 November 2022. Results of operations for interim periods are not necessarily indicative of the results of operations for a full year. Major Accounting Policies Refer to our 2022 Form 10-K for a description of major accounting policies. There have been no significant changes to these accounting policies during the first six months of fiscal year 2023. Risks and Uncertainties We are subject to various risks and uncertainties, including, but not limited to, those resulting from the COVID-19 pandemic and increased inflationary pressures. Our results of operations for the periods covered by this report were not materially impacted by these events; however, there is uncertainty regarding how these events and others may affect our business, results of operations, and overall financial performance. Reclassifications Beginning in the first quarter of fiscal year 2023, we present "Operating lease right-of-use assets, net" and "Noncurrent operating lease liabilities" in separate captions on our consolidated balance sheets. These balances were previously presented within "Other noncurrent assets" and "Other noncurrent liabilities," respectively. Our balance sheet as of 30 September 2022 has been reclassified to conform to the fiscal year 2023 presentation.

New Accounting Guidance

New Accounting Guidance	6 Months Ended
	Mar. 31, 2023
Accounting Standards Update and Change in Accounting Principle [Abstract]
New Accounting Guidance	NEW ACCOUNTING GUIDANCE New Accounting Guidance to be Implemented Government Assistance In November 2021, the Financial Accounting Standards Board ("FASB") issued disclosure guidance to increase the transparency of transactions an entity has with a government that are accounted for by applying a grant or contribution accounting model. We are evaluating the impact this guidance will have on our annual disclosures to our consolidated financial statements. We will adopt this guidance prospectively in our Annual Report for fiscal year 2023. Reference Rate Reform In March 2020, the FASB issued an update to provide practical expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met. This update is primarily applicable to our contracts and hedging relationships that reference the London Inter-Bank Offered Rate ("LIBOR"). In December 2022, the FASB extended the date through which the amendments may be applied to impacted contracts and hedges to 31 December 2024. We have had no reference rate reform modifications to date. We will adopt this update on a prospective basis in the event of any such modifications.

Variable Interest Entities

Variable Interest Entities	6 Months Ended
	Mar. 31, 2023
Consolidated Variable Interest Entities Disclosure [Abstract]
Variable Interest Entities	VARIABLE INTEREST ENTITIES We are the primary beneficiary of the NEOM Green Hydrogen Company joint venture ("NGHC"), which is a variable interest entity ("VIE") that is consolidated in our Middle East and India segment. We are not the primary beneficiary of any other material VIEs. We account for a VIE for which we exercise significant influence but are not the primary beneficiary, such as the Jazan Integrated Gasification and Power Company joint venture, as an equity method investment. For additional information on this joint venture, refer to Note 7, Equity Affiliates . The table below summarizes balances associated with NGHC as reflected on our consolidated balance sheets. For additional information on this joint venture, refer to the "NEOM Green Hydrogen Project" section that follows. 31 March 30 September 2023 2022 Assets Cash and cash items $129.2 $274.7 Trade receivables, net — 1.3 Prepaid expenses 3.3 0.1 Other receivables and current assets 52.3 23.3 Plant and equipment, net 613.3 218.8 Other noncurrent assets 11.1 1.5 Total Assets $809.2 $519.7 Liabilities Payables and accrued liabilities 73.6 58.1 Accrued income taxes 0.4 — Long-term debt – related party (A) 476.7 447.3 Other noncurrent liabilities 3.0 1.4 Total Liabilities $553.7 $506.8 Noncontrolling interests (A) $2.6 $30.0 (A) During the second quarter of fiscal year 2023, approximately $29 of investments attributable to the noncontrolling partner of NGHC were converted to shareholder loans. This noncash activity is presented within “Other equity transactions” related to noncontrolling interests on our consolidated statements of equity for the three and six months ended 31 March 2023. NEOM Green Hydrogen Project In the fourth quarter of fiscal year 2020, we announced the NEOM Green Hydrogen Project (the "NEOM project”), a multi-billion dollar green hydrogen-based ammonia production facility powered by renewable energy located in the NEOM city of the Kingdom of Saudi Arabia. We, along with our joint venture partners, ACWA Power and NEOM Company, are equal owners in NGHC, which will develop, construct, own, operate, and finance the NEOM project. The NEOM project is expected to be financed through non-recourse project financing and the partners’ investments. During the third quarter of fiscal year 2022, we entered into an agreement with NGHC under which we commenced construction of the NEOM project. In addition, we executed an agreement with NGHC under which we will be the exclusive offtaker of green ammonia produced by the NEOM project under a long-term take-if-tendered agreement. The NEOM project is expected to be on-stream in 2026. We intend to transport green ammonia around the world to be dissociated to produce green hydrogen, primarily for the transportation market. Air Products has one-third of the voting interests in the NGHC joint venture; however, substantially all the activities of the joint venture involve or are conducted on behalf of Air Products. Since we have disproportionately few voting rights relative to our economic interests in the joint venture, we determined that NGHC is a variable interest entity. In addition, we determined that we are the primary beneficiary of NGHC since we have the power to unilaterally direct certain significant activities, including key design and construction decisions, and we share power with our joint venture partners related to other activities that are significant to the economic performance of NGHC. Therefore, we consolidated NGHC within the Middle East and India segment beginning in the third quarter of fiscal year 2022.

Business and Asset Actions

Business and Asset Actions	6 Months Ended
	Mar. 31, 2023
Restructuring and Related Activities [Abstract]
Business and Asset Actions	BUSINESS AND ASSET ACTIONSOur consolidated income statements for the three and six months ended 31 March 2023 reflect "Business and asset actions" of $185.6 ($153.7 attributable to Air Products after tax) that resulted from a noncash write-off of assets previously under construction in our Asia and Europe segments. In March 2023, we confirmed our decision to withdraw from coal gasification in Indonesia in order to focus our resources on other opportunities. Additionally, we permanently suspended construction of a plant in Ukraine due to ongoing uncertainty related to Russia's invasion of the country. The charge for these actions was not recorded in segment results.

Revenue Recognition

Revenue Recognition	6 Months Ended
	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Revenue Recognition	REVENUE RECOGNITION The majority of our revenue is generated from our sale of gas customers within the regional industrial gases segments. We distribute gases through either our on-site or merchant supply mode depending on various factors, including the customer's volume requirements and location. We also design and manufacture equipment for air separation, hydrocarbon recovery and purification, natural gas liquefaction, and liquid helium and liquid hydrogen transport and storage. The Corporate and other segment serves our sale of equipment customers. Disaggregation of Revenue The tables below present our consolidated sales disaggregated by supply mode for each of our reportable segments for the second quarter and first six months of fiscal years 2023 and 2022. We believe this presentation best depicts the nature, timing, type of customer, and contract terms for our sales. Three Months Ended 31 March Americas Asia Europe Middle East Corporate Total % 2023 On-site $801.9 $490.3 $259.4 $22.8 $— $1,574.4 49 % Merchant 571.2 323.6 493.5 22.0 — 1,410.3 44 % Sale of equipment — — — — 215.4 215.4 7 % Total $1,373.1 $813.9 $752.9 $44.8 $215.4 $3,200.1 100 % 2022 On-site $716.5 $460.4 $292.0 $17.3 $— $1,486.2 51 % Merchant 470.1 290.8 446.6 11.6 — 1,219.1 41 % Sale of equipment — — — — 239.8 239.8 8 % Total $1,186.6 $751.2 $738.6 $28.9 $239.8 $2,945.1 100 % Six Months Ended 31 March Americas Asia Europe Middle East Corporate Total % 2023 On-site $1,647.7 $948.0 $587.5 $41.6 $— $3,224.8 51 % Merchant 1,109.6 643.7 957.3 44.6 — 2,755.2 43 % Sale of Equipment — — — — 394.8 394.8 6 % Total $2,757.3 $1,591.7 $1,544.8 $86.2 $394.8 $6,374.8 100 % 2022 On-site $1,514.1 $912.0 $617.6 $33.6 $— $3,077.3 52 % Merchant 896.6 619.6 865.2 19.0 — 2,400.4 40 % Sale of Equipment — — — — 461.6 461.6 8 % Total $2,410.7 $1,531.6 $1,482.8 $52.6 $461.6 $5,939.3 100 % Remaining Performance Obligations As of 31 March 2023, the transaction price allocated to remaining performance obligations is estimated to be approximately $24 billion. This amount includes fixed-charge contract provisions associated with our on-site and sale of equipment supply modes. We estimate that approximately half of this revenue will be recognized over the next five years and the balance thereafter. Our remaining performance obligations do not include (1) expected revenue associated with new on-site plants that are not yet on-stream; (2) consideration associated with contracts that have an expected duration of less than one year; and (3) variable consideration for which we recognize revenue at the amount to which we have the right to invoice, including energy cost pass-through to customers. In the future, actual amounts will differ due to events outside of our control, including, but not limited to, inflationary price escalations; currency exchange rates; and amended, terminated, or renewed contracts. Contract Balances The table below details balances arising from contracts with customers: 31 March 30 September Balance Sheet Location 2023 2022 Assets Contract assets – current Other receivables and current assets $74.2 $69.0 Contract fulfillment costs – current Other receivables and current assets 105.6 84.1 Liabilities Contract liabilities – current Payables and accrued liabilities $396.0 $439.1 Contract liabilities – noncurrent Other noncurrent liabilities 97.7 67.2 Changes to our contract balances primarily relate to our sale of equipment contracts. During the first half of fiscal year 2023, we recognized sales of approximately $165 associated with sale of equipment contracts that were included within our contract liabilities as of 30 September 2022.

Inventories

Inventories	6 Months Ended
	Mar. 31, 2023
Inventory Disclosure [Abstract]
Inventories	INVENTORIES The components of inventories are as follows: 31 March 30 September 2023 2022 Finished goods $239.1 $162.0 Work in process 27.2 22.0 Raw materials, supplies, and other 379.3 330.2 Inventories $645.6 $514.2

Equity Affiliates

Equity Affiliates	6 Months Ended
	Mar. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]
Equity Affiliates	EQUITY AFFILIATES Equity Affiliate Investment in Jazan Integrated Gasification and Power Company (“JIGPC”) On 27 October 2021, we made an initial investment of $1.6 billion to acquire a 55% ownership interest in the Jazan Integrated Gasification and Power Company ("JIGPC") joint venture, of which 4% is attributable to the noncontrolling partner of Air Products Qudra (“APQ”). We completed a second investment of $908 on 19 January 2023, which did not change our ownership interest. As of 31 March 2023, the carrying value of our investment totaled $2,724.0 and is presented as “Investments in net assets of and advances to equity affiliates” on our consolidated balance sheet. Our loss exposure is limited to our investment in the joint venture. Our investments were made primarily in the form of shareholder loans that qualify as in-substance common stock in the joint venture and were executed according to the timing of the joint venture's purchase of project assets, which is being completed in phases. The amounts invested included approximately $130 and $73 received from the noncontrolling partner of APQ for the first and second investment, respectively. We expect to complete a remaining investment of approximately $115 for additional assets to be purchased by the joint venture later this calendar year. We determined JIGPC is a variable interest entity for which we are not the primary beneficiary as we do not have the power to direct the activities that are most significant to the economic performance of the joint venture. Instead, these activities, including plant dispatch, operating and maintenance decisions, budgeting, capital expenditures, and financing, require unanimous approval of the owners or are controlled by the customer. Since we have the ability to exercise significant influence in the joint venture, we accounted for our investment in JIGPC under the equity method within the Middle East and India segment beginning in the first quarter of fiscal year 2022. Certain shareholders receive a preferred cash distribution pursuant to the joint venture agreement, which specifies each shareholder’s share of income after considering the amount of cash available for distribution. As such, the earnings attributable to Air Products may not be proportionate to our ownership interest in the venture. Additional information on the JIGPC joint venture is provided below. JIGPC Joint Venture JIGPC is a joint venture with Saudi Aramco Power Company (a subsidiary of Aramco), ACWA Power, and APQ in the Jazan Economic City, Saudi Arabia. On 27 September 2021, JIGPC signed definitive agreements for the acquisition of project assets from Aramco for $12 billion and entered into related project financing for the purchase of the project assets, which include power blocks, gasifiers, air separation units, syngas cleanup assets, and utilities, in multiple phases. The first phase was completed on 27 October 2021 for $7.39 billion, and the second phase was completed for $4.15 billion on 19 January 2023. We expect JIGPC to acquire additional assets totaling approximately $525 later this calendar year. JIGPC will commission, operate, and maintain the project assets to supply electricity, steam, hydrogen, and utilities to Aramco’s refinery and terminal complex under a 25-year agreement, which commenced in the first quarter of fiscal year 2022. JIGPC recorded financing receivables upon acquisition of the assets and is recognizing financing income over the supply term. Jazan Gas Project Company Jazan Gas Project Company (“JGPC”), a joint venture between Air Products and ACWA Holding, entered into a 20-year oxygen and nitrogen supply agreement in 2015 to supply Aramco’s oil refinery and power plant in Jazan, Saudi Arabia. In October 2021, the supply agreement between JGPC and Aramco was terminated, and JGPC sold its air separation units to Aramco. We initially sold these assets to JGPC and deferred profit proportionate to our ownership in the joint venture. With the termination of the supply agreement and sale of the air separation units complete, we recognized the remaining deferred profit, net of other project finalization costs, in equity affiliates’ income in the first quarter of fiscal year 2022.

Goodwill

Goodwill	6 Months Ended
	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	GOODWILL Changes to the carrying amount of consolidated goodwill by segment for the six months ended 31 March 2023 are as follows: Americas Asia Europe Middle East Corporate Total Goodwill, net at 30 September 2022 $143.2 $172.7 $457.5 $15.8 $33.8 $823.0 Currency translation and other 8.7 4.2 47.9 — 0.1 60.9 Goodwill, net at 31 March 2023 $151.9 $176.9 $505.4 $15.8 $33.9 $883.9 31 March 30 September 2023 2022 Goodwill, gross $1,218.0 $1,096.0 Accumulated impairment losses (A) (334.1) (273.0) Goodwill, net $883.9 $823.0 (A) Accumulated impairment losses are attributable to our Latin America reporting unit ("LASA") within the Americas segment and include the impact of currency translation. We review goodwill for impairment annually in the fourth quarter of the fiscal year and whenever events or changes in circumstances indicate that the carrying value of goodwill might not be recoverable.

Financial Instruments

Financial Instruments	6 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Instruments	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 seek 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 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 and third-party debt. 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 31 March 2023 is 3.2 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 pair in this portfolio of forward exchange contracts is Euros and U.S. Dollars. We also 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 our business activity and sourcing decisions. The table below summarizes our outstanding currency price risk management instruments: 31 March 2023 30 September 2022 US$ Years US$ Years Forward Exchange Contracts: Cash flow hedges $4,628.7 0.6 $4,525.0 0.7 Net investment hedges 860.4 2.9 542.2 2.2 Not designated 842.2 0.3 534.3 0.3 Total Forward Exchange Contracts $6,331.3 0.9 $5,601.5 0.8 We also 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 was €1,979.9 million ($2,146.1) at 31 March 2023 and €1,265.4 million ($1,240.4) at 30 September 2022. The designated foreign currency-denominated debt is presented within "Long-term debt" on the consolidated balance sheets. Debt Portfolio Management It is our policy to identify, on a continuing basis, the need for debt capital and to evaluate the financial risks inherent in funding the Company with debt capital. Reflecting the result of this ongoing review, we manage our debt portfolio and hedging program with the 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). As of 31 March 2023, 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. The contracts are used to hedge either certain net investments in foreign operations or non-functional currency cash flows related to intercompany loans. The current cross currency interest rate swap portfolio consists of fixed-to-fixed swaps primarily between the U.S. Dollar and each of the Chinese Renminbi, Indian Rupee, and Chilean Peso. The table below summarizes our outstanding interest rate management contracts and cross currency interest rate swaps: 31 March 2023 30 September 2022 US$ Average Average Years US$ Average Average Years Interest rate swaps $800.0 Various 1.64 % 4.5 $800.0 Various 1.64 % 5.0 Cross currency interest rate swaps $150.1 3.89 % 3.01 % 1.0 $176.7 4.12 % 3.07 % 1.2 Cross currency interest rate swaps $630.3 4.75 % 3.05 % 2.4 $785.7 4.78 % 3.05 % 2.3 Cross currency interest rate swaps $20.3 5.39 % 3.54 % 0.7 $37.7 5.39 % 3.54 % 1.2 The table below provides the amounts recorded on the consolidated balance sheet related to cumulative basis adjustments for fair value hedges: Carrying amounts of hedged item Cumulative hedging adjustment, included in carrying amount 31 March 30 September 31 March 30 September Balance Sheet Location 2023 2022 2023 2022 Long-term debt $2,031.0 $2,012.9 ($59.9) ($77.1) The table below summarizes the fair value and balance sheet location of our outstanding derivatives: Balance Sheet 31 March 30 September Balance Sheet 31 March 30 September Location 2023 2022 Location 2023 2022 Derivatives Designated as Hedging Instruments: Forward exchange contracts Other receivables and current assets $82.1 $71.6 Payables and accrued liabilities $67.2 $226.2 Interest rate management contracts Other receivables and current assets 8.5 36.7 Payables and accrued liabilities 2.5 — Forward exchange contracts Other noncurrent assets 23.5 60.8 Other noncurrent liabilities 12.9 46.9 Interest rate management contracts Other noncurrent assets 6.9 12.5 Other noncurrent liabilities 82.5 91.2 Total Derivatives Designated as Hedging Instruments $121.0 $181.6 $165.1 $364.3 Derivatives Not Designated as Hedging Instruments: Forward exchange contracts Other receivables and current assets 4.4 6.1 Payables and accrued liabilities 4.6 2.1 Interest rate management contracts Other receivables and current assets 0.2 — Payables and accrued liabilities — — Forward exchange contracts Other noncurrent assets 0.2 0.1 Other noncurrent liabilities 0.1 0.1 Interest rate management contracts Other noncurrent assets — 1.3 Other noncurrent liabilities — — Total Derivatives Not Designated as Hedging Instruments $4.8 $7.5 $4.7 $2.2 Total Derivatives $125.8 $189.1 $169.8 $366.5 Refer to Note 10, Fair Value Measurements , which defines fair value, describes the method for measuring fair value, and provides additional disclosures regarding fair value measurements. The tables below summarize gains (losses) recognized in other comprehensive income during the period related to our net investment and cash flow hedging relationships: Three Months Ended Six Months Ended 31 March 31 March 2023 2022 2023 2022 Net Investment Hedging Relationships Forward exchange contracts ($15.3) ($4.2) ($62.4) $10.3 Foreign currency debt (35.6) 39.4 (150.9) 67.0 Cross currency interest rate swaps (3.2) (7.4) (13.8) (9.7) Total Amount Recognized in OCI (54.1) 27.8 (227.1) 67.6 Tax effects 13.3 (6.9) 55.8 (16.7) Net Amount Recognized in OCI ($40.8) $20.9 ($171.3) $50.9 Three Months Ended Six Months Ended 31 March 31 March 2023 2022 2023 2022 Derivatives in Cash Flow Hedging Relationships Forward exchange contracts $5.3 ($40.1) $194.1 ($63.5) Forward exchange contracts, excluded components (5.9) 2.0 (11.5) (0.7) Other (A) (14.6) (16.6) (38.6) (2.1) Total Amount Recognized in OCI (15.2) (54.7) 144.0 (66.3) Tax effects 0.6 15.3 (37.6) 26.4 Net Amount Recognized in OCI ($14.6) ($39.4) $106.4 ($39.9) (A) Other primarily includes interest rate and cross currency interest rate swaps for which excluded components are recognized in “Payables and accrued liabilities” and “Other receivables and current assets” as a component of accrued interest payable and accrued interest receivable, respectively. These excluded components are recorded in “Other non-operating income (expense), net” over the life of the cross currency interest rate swap. Other also includes the recognition of our share of gains and losses, net of tax, related to interest rate swaps held by our equity affiliates. The table below summarizes the location and amounts recognized in income related to our cash flow and fair value hedging relationships by contract type: Three Months Ended 31 March Sales Cost of Sales Interest Expense Other Non-Operating Income (Expense), Net 2023 2022 2023 2022 2023 2022 2023 2022 Total presented in consolidated income statements that includes effects of hedging below $3,200.1 $2,945.1 $2,282.8 $2,151.6 $40.9 $32.3 ($13.9) $9.1 (Gain) Loss Effects of Cash Flow Hedging: Forward Exchange Contracts: Amount reclassified from OCI into income $0.1 $0.3 $2.4 $0.4 $— $— ($6.1) $26.4 Amount excluded from effectiveness testing recognized in earnings based on amortization approach — — — — — — 3.3 1.1 Other: Amount reclassified from OCI into income — — — — 1.3 1.5 6.7 4.9 Total (Gain) Loss Reclassified from OCI to Income 0.1 0.3 2.4 0.4 1.3 1.5 3.9 32.4 Tax effects — (0.1) (0.6) (0.1) (0.6) (0.6) (0.7) (7.8) Net (Gain) Loss Reclassified from OCI to Income $0.1 $0.2 $1.8 $0.3 $0.7 $0.9 $3.2 $24.6 (Gain) Loss Effects of Fair Value Hedging: Other: Hedged items $— $— $— $— $12.8 ($22.0) $— $— Derivatives designated as hedging instruments — — — — (12.8) 22.0 — — Total (Gain) Loss Recognized in Income $— $— $— $— $— $— $— $— Six Months Ended 31 March Sales Cost of Sales Interest Expense Other Non-Operating Income (Expense), Net 2023 2022 2023 2022 2023 2022 2023 2022 Total presented in consolidated income statements that includes effects of hedging below $6,374.8 $5,939.3 $4,555.1 $4,375.2 $82.1 $62.8 ($14.5) $31.7 (Gain) Loss Effects of Cash Flow Hedging: Forward Exchange Contracts: Amount reclassified from OCI into income $0.1 $0.7 $3.6 $0.3 $— $— ($123.9) $40.9 Amount excluded from effectiveness testing recognized in earnings based on amortization approach — — — — — — 5.3 2.4 Other: Amount reclassified from OCI into income — — — — 2.8 2.9 29.4 12.2 Total (Gain) Loss Reclassified from OCI to Income 0.1 0.7 3.6 0.3 2.8 2.9 (89.2) 55.5 Tax effects — (0.2) (0.8) (0.1) (1.1) (1.1) 21.7 (13.3) Net (Gain) Loss Reclassified from OCI to Income $0.1 $0.5 $2.8 $0.2 $1.7 $1.8 ($67.5) $42.2 (Gain) Loss Effects of Fair Value Hedging: Other: Hedged items $— $— $— $— $17.2 ($24.5) $— $— Derivatives designated as hedging instruments — — — — (17.2) 24.5 — — Total (Gain) Loss Recognized in Income $— $— $— $— $— $— $— $— The table below summarizes the location and amounts recognized in income related to our derivatives not designated as hedging instruments by contract type: Three Months Ended 31 March Other Income (Expense), Net Other Non-Operating Income (Expense), Net 2023 2022 2023 2022 The Effects of Derivatives Not Designated as Hedging Instruments: Forward Exchange Contracts $0.7 $0.3 ($1.1) ($0.7) Other — — 0.8 0.1 Total (Gain) Loss Recognized in Income $0.7 $0.3 ($0.3) ($0.6) Six Months Ended 31 March Other Income (Expense), Net Other Non-Operating Income (Expense), Net 2023 2022 2023 2022 The Effects of Derivatives Not Designated as Hedging Instruments: Forward Exchange Contracts $1.3 $1.4 ($2.7) ($1.3) Other — — 1.9 0.2 Total (Gain) Loss Recognized in Income $1.3 $1.4 ($0.8) ($1.1) The amount of unrealized gains and losses related to cash flow hedges as of 31 March 2023 that are expected to be reclassified to earnings in the next twelve months is not material. The cash flows related to derivative contracts are generally 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 $111.5 and $114.8 as of 31 March 2023 and 30 September 2022, respectively. 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 $37.3 and $62.8 as of 31 March 2023 and 30 September 2022, respectively. No financial institution is required to post collateral at this time as all have credit ratings at or above threshold.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS Fair value is defined as an exit price, or 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: Short-term Investments Short-term investments primarily include time deposits with original maturities greater than three months and less than one year. We estimated the fair value of our short-term investments, which approximates carrying value as of the balance sheet date, using Level 2 inputs within the fair value hierarchy. Level 2 measurements were based on current interest rates for similar investments with comparable credit risk and time to maturity. 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 consider 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 pricing models utilize inputs that are derived from or corroborated by observable market data such as interest rate yield curves as well as 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 9, Financial Instruments , for a description of derivative instruments, including details related to the balance sheet line classifications. Long-term Debt, Including Related Party The fair value of our debt is based on estimates using standard pricing models that consider 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: 31 March 2023 30 September 2022 Carrying Value Fair Value Carrying Value Fair Value Assets Derivatives Forward exchange contracts $110.2 $110.2 $138.6 $138.6 Interest rate management contracts 15.6 15.6 50.5 50.5 Liabilities Derivatives Forward exchange contracts $84.8 $84.8 $275.3 $275.3 Interest rate management contracts 85.0 85.0 91.2 91.2 Long-term debt, including current portion and related party 9,133.9 8,409.1 7,634.1 6,721.2 The carrying amounts reported on the consolidated balance sheets for cash and cash items, short-term investments, 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 table below summarizes assets and liabilities on the consolidated balance sheets that are measured at fair value on a recurring basis: 31 March 2023 30 September 2022 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets at Fair Value Derivatives Forward exchange contracts $110.2 $— $110.2 $— $138.6 $— $138.6 $— Interest rate management contracts 15.6 — 15.6 — 50.5 — 50.5 — Total Assets at Fair Value $125.8 $— $125.8 $— $189.1 $— $189.1 $— Liabilities at Fair Value Derivatives Forward exchange contracts $84.8 $— $84.8 $— $275.3 $— $275.3 $— Interest rate management contracts 85.0 — 85.0 — 91.2 — 91.2 — Total Liabilities at Fair Value $169.8 $— $169.8 $— $366.5 $— $366.5 $—

Debt

Debt	6 Months Ended
	Mar. 31, 2023
Debt Disclosure [Abstract]
Debt	DEBT Green Financing On 3 March 2023, we issued our inaugural multi-currency green bonds under our new Green Finance Framework, which was established to further align our financings with our sustainability strategy. The offering included U.S. Dollar- and Euro-denominated fixed-rate notes with aggregate principal amounts of $600 and €700 million, respectively. The proceeds from these notes were reduced by deferred financing charges and discounts of approximately $15 as of 31 March 2023, which will be amortized over the life of the underlying bonds. We intend to use the net proceeds to finance or refinance, in whole or in part, existing or future projects that are expected to have environmental benefits, including those related to pollution prevention and control, renewable energy generation and procurement, and sustainable aviation fuel. Pending full allocation of the net proceeds to such eligible projects, we may temporarily invest the balance of the net proceeds in cash, cash equivalents, or short-term investments, or repay a portion of outstanding indebtedness in line with our treasury management policies. The interest rate, maturity, and carrying amount as of 31 March 2023 for each of the notes issued under our Green Finance Framework are summarized in the table below: Fiscal Year 31 March 2023 Payable in U.S. Dollars Note 4.800% 2033 $600.0 Payable in Euros Eurobonds 4.000% 2035 758.8 Total $1,358.8 Related Party Debt Total debt owed to related parties was $822.1 and $781.0 as of 31 March 2023 and 30 September 2022, respectively, of which $133.6 and $129.0, respectively, was reflected within "Current portion of long-term debt" on our consolidated balance sheets. Our related party debt includes loans with joint venture partners, including Lu’An Clean Energy Company, as well as shareholder loans associated with the NEOM project. Refer to Note 3, Variable Interest Entities , for additional information. Other We have credit facilities available to certain of our foreign subsidiaries totaling $1,324.4, of which $823.5 was borrowed and outstanding as of 31 March 2023. The amount borrowed and outstanding as of 30 September 2022 was $457.5. The increase from 30 September 2022 was driven by borrowings on a new variable-rate Saudi Riyal loan facility that matures in October 2026. The interest rate on the facility is based on the Saudi Arabian Interbank Offered Rate ("SAIBOR") plus an annual margin of 1.35%. We entered into this facility in October 2022 and utilized a portion of the proceeds to repay a variable-rate 4.10% Saudi Riyal Loan Facility of $195.6, which was presented within long-term debt on our consolidated balance sheet as of 30 September 2022.

Retirement Benefits

Retirement Benefits	6 Months Ended
	Mar. 31, 2023
Retirement Benefits [Abstract]
Retirement Benefits	RETIREMENT BENEFITS The components of net periodic cost (benefit) for our defined benefit pension plans for the three and six months ended 31 March 2023 and 2022 were as follows: Pension Benefits 2023 2022 Three Months Ended 31 March U.S. Inter-national Total U.S. Inter-national Total Service cost $2.8 $3.0 $5.8 $4.6 $5.6 $10.2 Non-service cost (benefit): Interest cost 32.5 14.9 47.4 18.4 7.6 26.0 Expected return on plan assets (31.8) (12.2) (44.0) (42.1) (17.6) (59.7) Prior service cost amortization 0.3 0.1 0.4 0.3 — 0.3 Actuarial loss amortization 15.0 3.0 18.0 16.6 3.8 20.4 Settlements 0.9 0.2 1.1 0.9 0.2 1.1 Other — 0.2 0.2 — 0.2 0.2 Net Periodic Cost (Benefit) $19.7 $9.2 $28.9 ($1.3) ($0.2) ($1.5) Pension Benefits 2023 2022 Six Months Ended 31 March U.S. Inter-national Total U.S. Inter-national Total Service cost $5.5 $6.3 $11.8 $9.2 $11.2 $20.4 Non-service cost (benefit): Interest cost 65.0 29.3 94.3 36.8 15.2 52.0 Expected return on plan assets (63.6) (24.0) (87.6) (84.2) (35.3) (119.5) Prior service cost amortization 0.6 0.1 0.7 0.6 — 0.6 Actuarial loss amortization 29.8 6.0 35.8 33.3 7.7 41.0 Settlements 0.9 0.2 1.1 1.8 0.2 2.0 Curtailments — (1.9) (1.9) — — — Other — 0.5 0.5 — 1.0 1.0 Net Periodic Cost (Benefit) $38.2 $16.5 $54.7 ($2.5) $— ($2.5) Our service costs are primarily included within "Cost of sales" and "Selling and administrative expense" on our consolidated income statements. The amount of service costs capitalized in the first six months of fiscal years 2023 and 2022 were not material. The non-service related impacts, including pension settlement losses and curtailment gains, are presented outside operating income within " Other non-operating income (expense), net. For the six months ended 31 March 2023 and 2022, our cash contributions to funded pension plans and benefit payments under unfunded pension plans were $15.4 and $16.1, respectively. Total contributions for fiscal year 2023 are expected to be approximately $25 to $35. During fiscal year 2022, total contributions were $44.7. In December 2022, we amended an international defined benefit pension plan to move its participants to a defined contribution plan for future benefit accumulation. As a result of this amendment, we recognized a $1.9 curtailment gain for the write-off of prior service credits and remeasured the projected benefit obligations of the plan. This resulted in a net decrease to our projected benefit obligation and accumulated other comprehensive loss of $9.1 in the first quarter of fiscal year 2023. The impact of the remeasurement on fiscal year 2023 expense is not material.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Litigation We are involved in various legal proceedings, including commercial, competition, environmental, intellectual property, regulatory, product liability, and insurance matters. 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. 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 $35 at 31 March 2023) on Air Products Brasil Ltda. This fine was based on a recommendation by a unit of the Brazilian Ministry of Justice, following an investigation beginning in 2003, which alleged 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. In the event of an adverse final judgment, we estimate the maximum possible loss to be the full amount of the fine of R$179.2 million (approximately $35 at 31 March 2023) plus interest accrued thereon until final disposition of the proceedings. Additionally, in April 2023, we received a favorable ruling from a Texas court for disputed energy management services related to Winter Storm Uri, a severe winter weather storm that impacted the U.S. Gulf Coast in February 2021. The ruling is subject to appeal and had no impact on our consolidated financial statements for the three and six months ended 31 March 2023. 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 28 sites on which a final settlement or remediation has not been achieved where we, usually along with others, have been designated a potentially responsible party by environmental authorities 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 31 March 2023 and 30 September 2022 included an accrual of $68.9 and $71.3, 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 $68 to a reasonably possible upper exposure of $82 as of 31 March 2023. 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 31 March 2023, $37.7 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 recognized a before-tax expense of $42 in fiscal year 2006 in results from discontinued operations and recorded an environmental accrual of $42 in continuing operations on the consolidated balance sheets. During the second quarter of fiscal year 2020, we completed an updated cost review of the environmental remediation status at the Pace facility. The review was completed in conjunction with requirements to maintain financial assurance per the Consent Order issued by the FDEP discussed below. Based on our review, we expect ongoing activities to continue for 30 years. Additionally, we will require near-term spending to install new groundwater recovery wells and ancillary equipment, in addition to future capital to consider the extended time horizon for remediation at the site. As a result of these changes, we increased our environmental accrual for this site by $19 in continuing operations on the consolidated balance sheets and recognized a before-tax expense of $19 in results from discontinued operations in the second quarter of fiscal year 2020. There have been no significant changes to the estimated exposure range related to the Pace facility since the second quarter of fiscal year 2020. 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 corrective action management unit. Several groundwater recovery systems have been installed to contain and remove contamination from groundwater. We completed an extensive assessment of the site to determine the efficacy of existing measures, 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 remediate groundwater. 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 and have completed additional field work during 2021 to support the design of an improved groundwater recovery network with the objective of targeting areas of higher contaminant concentration and avoiding areas of high groundwater iron which has proven to be a significant operability issue for the project. The design of the optimized recovery system has been initiated in fiscal year 2023 with construction to begin thereafter. 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, along with the completion of a cost review every 5 years. Piedmont At 31 March 2023, $6.9 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 ("SCDHEC") to address both contaminated soil and groundwater. Numerous areas of soil contamination have been addressed, and contaminated groundwater is being recovered and treated. The SCDHEC issued its final approval to the site-wide feasibility study on 13 June 2017 and the Record of Decision for the site on 27 June 2018, after which we signed a Consent Agreement Amendment memorializing our obligations to complete the cleanup of the site. Remediation has started in accordance with the design, which includes in-situ chemical oxidation treatment, as well as soil vapor extraction to remove volatile organic compounds from the unsaturated soils beneath the impacted areas of the plant. We estimate that source area remediation and groundwater recovery and treatment will continue through 2029. Thereafter, we expect this site to go into a state of monitored natural attenuation through 2047. We recognized a before-tax expense of $24 in 2008 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 31 March 2023, $10.7 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 continue 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, continuing post closure care for two closed RCRA surface impoundment units, and maintaining engineering controls. Additionally, we have conducted an interim corrective action to treat impacted soils as recommended in the TCEQ 2019 Annual Report. In 2012, we estimated the total exposure at this site to be $13. There have been no significant changes to the estimated exposure.

Share-Based Compensation

Share-Based Compensation	6 Months Ended
	Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]
Share-Based Compensation	SHARE-BASED COMPENSATION Our outstanding share-based compensation programs include deferred stock units and stock options. During the six months ended 31 March 2023, we granted market-based and time-based deferred stock units. 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 and the exercise of stock options. As of 31 March 2023, there were 1.2 million shares available for future grant under our Long-Term Incentive Plan ("LTIP"). Share-based compensation cost recognized on the consolidated income statements is summarized below: Three Months Ended Six Months Ended 31 March 31 March 2023 2022 2023 2022 Before-tax share-based compensation cost $15.5 $10.5 $32.4 $27.3 Income tax benefit (3.9) (2.6) (7.9) (6.7) After-tax share-based compensation cost $11.6 $7.9 $24.5 $20.6 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 the first six months of fiscal years 2023 and 2022 was not material. Deferred Stock Units During the six months ended 31 March 2023, we granted 85,612 market-based deferred stock units. The market-based deferred stock units are earned over the performance period beginning 1 October 2022 and ending 30 September 2025, conditioned on the level of our total shareholder return in relation to a defined peer group over the three-year performance period. The market-based deferred stock units had an estimated grant-date fair value of $502.03 per unit, which was estimated using a Monte Carlo simulation model. 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: Expected volatility 32.5 % Risk-free interest rate 4.0 % Expected dividend yield 2.4 % In addition, during the six months ended 31 March 2023, we granted 113,134 time-based deferred stock units at a weighted average grant-date fair value of $309.75.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	6 Months Ended
	Mar. 31, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Loss	ACCUMULATED OTHER COMPREHENSIVE LOSS The tables below summarize changes in accumulated other comprehensive loss ("AOCL"), net of tax, attributable to Air Products for the three and six months ended 31 March 2023: Derivatives Foreign Pension and Total Balance at 31 December 2022 ($19.0) ($1,576.0) ($623.3) ($2,218.3) Other comprehensive (loss) income before reclassifications (14.6) 51.0 — 36.4 Amounts reclassified from AOCL 5.8 (0.3) 14.4 19.9 Net current period other comprehensive (loss) income (8.8) 50.7 14.4 56.3 Amount attributable to noncontrolling interests (1.3) 2.6 — 1.3 Balance at 31 March 2023 ($26.5) ($1,527.9) ($608.9) ($2,163.3) Derivatives Foreign Pension and Total Balance at 30 September 2022 ($71.9) ($2,072.4) ($641.8) ($2,786.1) Other comprehensive income before reclassifications 106.4 560.6 6.7 673.7 Amounts reclassified from AOCL (62.9) (0.3) 26.3 (36.9) Net current period other comprehensive income 43.5 560.3 33.0 636.8 Amount attributable to noncontrolling interests (1.9) 15.8 0.1 14.0 Balance at 31 March 2023 ($26.5) ($1,527.9) ($608.9) ($2,163.3) The table below summarizes the reclassifications out of AOCL and the affected line item on the consolidated income statements: Three Months Ended Six Months Ended 31 March 31 March 2023 2022 2023 2022 Loss (Gain) on Cash Flow Hedges, net of tax Sales $0.1 $0.2 $0.1 $0.5 Cost of sales 1.8 0.3 2.8 0.2 Interest expense 0.7 0.9 1.7 1.8 Other non-operating income (expense), net 3.2 24.6 (67.5) 42.2 Total Loss (Gain) on Cash Flow Hedges, net of tax $5.8 $26.0 ($62.9) $44.7 Currency Translation Adjustment Business and asset actions ($0.3) $— ($0.3) $— Pension and Postretirement Benefits, net of tax (A) $14.4 $15.9 $26.3 $31.9 (A) The components of net periodic benefit cost reclassified out of AOCL include items such as prior service cost amortization, actuarial loss amortization, settlements, and curtailments and are included in “Other non-operating income (expense), net” on the consolidated income statements. Refer to Note 12, Retirement Benefits , for additional information.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS PER SHARE The table below details the computation of basic and diluted earnings per share ("EPS"): Three Months Ended Six Months Ended 31 March 31 March 2023 2022 2023 2022 Numerator Net income attributable to Air Products $439.8 $530.5 $1,012.0 $1,090.9 Denominator (in millions) Weighted average common shares — Basic 222.3 222.0 222.3 222.0 Effect of dilutive securities Employee stock option and other award plans 0.4 0.5 0.4 0.5 Weighted average common shares — Diluted 222.7 222.5 222.7 222.5 Per Share Data (U.S. Dollars per share) Basic EPS attributable to Air Products $1.98 $2.39 $4.55 $4.91 Diluted EPS attributable to Air Products $1.97 $2.38 $4.54 $4.90 For the three and six months ended 31 March 2023 and 2022, there were no antidilutive outstanding share-based awards.

Income Taxes

Income Taxes	6 Months Ended
	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Effective Tax Rate Our effective tax rate was 21.2% and 19.9% for the three and six months ended 31 March 2023, respectively, and 18.6% and 17.8% for the three and six months ended 31 March 2022, respectively. During the second quarter of 2023, we recognized a charge of $185.6 ($153.7 attributable to Air Products after tax) related to various business and asset actions. Refer to Note 4, Business and Asset Actions , for additional information. This charge included certain losses for which we could not recognize an income tax benefit. Therefore, we recorded a valuation allowance of $31.7 against deferred tax assets resulting from the charge. Partially offsetting the valuation allowance cost was a $15.9 income tax benefit from a tax election related to a non-U.S. subsidiary. Cash Paid for Taxes (Net of Cash Refunds) Income tax payments, net of refunds, were $327.0 and $236.9 for the six months ended 31 March 2023 and 2022, respectively.

Supplemental Information

Supplemental Information	6 Months Ended
	Mar. 31, 2023
Disclosure Text Block Supplement [Abstract]
Supplemental Information	SUPPLEMENTAL INFORMATION Related Party Transactions We have related party sales to some of our equity affiliates and joint venture partners as well as other income primarily from fees charged for use of Air Products' patents and technology. Sales to and other income from related parties totaled approximately $105 and $185 for the three and six months ended 31 March 2023, respectively, and approximately $60 and $125 for the three and six months ended 31 March 2022, respectively. Sales agreements with related parties include terms that are consistent with those that we believe would have been negotiated at an arm’s length with an independent party. As of 31 March 2023 and 30 September 2022, our consolidated balance sheets included related party trade receivables of approximately $170 and $55, respectively. Refer to Note 11, Debt , for information concerning debt owed to related parties. Changes in Estimates Changes in estimates on projects accounted for under the cost incurred input method are recognized as a cumulative adjustment for the inception-to-date effect of such change. We recorded changes to project cost estimates that unfavorably impacted operating income by approximately $35 and $60 for the three and six months ended 31 March 2023. The impact of changes in estimates for the first half of fiscal year 2022 was not material. Lessee Accounting During the six months ended 31 March 2023, we recorded noncash right-of-use asset additions of approximately $79, primarily for operating leases that had not yet commenced as of 30 September 2022.

Business Segment Information

Business Segment Information	6 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Business Segment Information	BUSINESS SEGMENT INFORMATION Our reportable segments reflect the manner in which our chief operating decision maker assesses performance and allocates resources. Our reportable segments are as follows: • Americas; • Asia; • Europe; • Middle East and India; and • Corporate and other Except for the Corporate and other segment, each reportable segment meets the definition of an operating segment and does not include the aggregation of multiple operating segments. Our Corporate and other segment includes the aggregation of three operating segments that meet the aggregation criteria under GAAP. Summary by Business Segment Americas Asia Europe Middle East Corporate Total Three Months Ended 31 March 2023 Sales $1,373.1 $813.9 $752.9 $44.8 $215.4 $3,200.1 (A) Operating income (loss) 324.2 233.0 173.2 1.3 (86.3) 645.4 (B) Depreciation and amortization 161.7 110.0 48.3 6.6 13.0 339.6 Equity affiliates' income 28.1 7.3 29.5 98.9 2.1 165.9 Three Months Ended 31 March 2022 Sales $1,186.6 $751.2 $738.6 $28.9 $239.8 $2,945.1 (A) Operating income (loss) 275.5 203.6 116.4 4.8 (38.4) 561.9 (B) Depreciation and amortization 153.7 111.8 50.3 6.9 13.2 335.9 Equity affiliates' income 20.1 6.2 23.3 71.1 0.1 120.8 (A) Sales relate to external customers only. All intersegment sales are eliminated in consolidation. (B) Refer to the Reconciliation to Consolidated Results section below. Americas Asia Europe Middle East Corporate Total Six Months Ended 31 March 2023 Sales $2,757.3 $1,591.7 $1,544.8 $86.2 $394.8 $6,374.8 (A) Operating income (loss) 667.2 468.9 319.0 8.0 (165.7) 1,297.4 (B) Depreciation and amortization 317.7 211.9 92.6 13.2 25.7 661.1 Equity affiliates' income 44.5 14.7 47.2 163.0 6.5 275.9 Six Months Ended 31 March 2022 Sales $2,410.7 $1,531.6 $1,482.8 $52.6 $461.6 $5,939.3 (A) Operating income (loss) 542.7 424.7 215.6 9.6 (107.7) 1,084.9 (B) Depreciation and amortization 309.0 222.6 100.1 13.0 23.5 668.2 Equity affiliates' income 54.3 12.8 37.2 163.4 0.9 268.6 Total Assets 31 March 2023 $8,859.0 $7,422.7 $3,914.4 $4,451.8 $4,787.5 $29,435.4 30 September 2022 8,237.7 6,968.7 3,645.1 2,980.7 5,360.4 27,192.6 (A) Sales relate to external customers only. All intersegment sales are eliminated in consolidation. (B) Refer to the Reconciliation to Consolidated Results section below. Reconciliation to Consolidated Results The table below reconciles total operating income disclosed in the tables above to consolidated operating income as reflected on our consolidated income statements: Three Months Ended Six Months Ended 31 March 31 March Operating Income 2023 2022 2023 2022 Total $645.4 $561.9 $1,297.4 $1,084.9 Business and asset actions (185.6) — (185.6) — Consolidated Operating Income $459.8 $561.9 $1,111.8 $1,084.9

Basis of Presentation and Maj_2

Basis of Presentation and Major Accounting Policies (Policies)	6 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The interim consolidated financial statements of Air Products and Chemicals, Inc. and its subsidiaries (“we,” “our,” “us,” the “Company,” “Air Products,” or “registrant”) included herein have been prepared by us, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles ("GAAP") have been condensed or omitted pursuant to such rules and regulations. In our opinion, the accompanying statements reflect adjustments necessary to fairly present the financial position, results of operations, and cash flows for those periods indicated and contain adequate disclosures to make the information presented not misleading. Adjustments included herein are of a normal, recurring nature unless otherwise disclosed in the notes to the interim consolidated financial statements. To fully understand the basis of presentation, the interim consolidated financial statements and related notes included herein should be read in conjunction with the consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended 30 September 2022 (the " 2022 Form 10-K "), which was filed with the SEC on 22 November 2022. Results of operations for interim periods are not necessarily indicative of the results of operations for a full year.
Reclassifications	Reclassifications Beginning in the first quarter of fiscal year 2023, we present "Operating lease right-of-use assets, net" and "Noncurrent operating lease liabilities" in separate captions on our consolidated balance sheets. These balances were previously presented within "Other noncurrent assets" and "Other noncurrent liabilities," respectively. Our balance sheet as of 30 September 2022 has been reclassified to conform to the fiscal year 2023 presentation.

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	6 Months Ended
	Mar. 31, 2023
Consolidated Variable Interest Entities Disclosure [Abstract]
Schedule of Variable Interest Entities	The table below summarizes balances associated with NGHC as reflected on our consolidated balance sheets. For additional information on this joint venture, refer to the "NEOM Green Hydrogen Project" section that follows. 31 March 30 September 2023 2022 Assets Cash and cash items $129.2 $274.7 Trade receivables, net — 1.3 Prepaid expenses 3.3 0.1 Other receivables and current assets 52.3 23.3 Plant and equipment, net 613.3 218.8 Other noncurrent assets 11.1 1.5 Total Assets $809.2 $519.7 Liabilities Payables and accrued liabilities 73.6 58.1 Accrued income taxes 0.4 — Long-term debt – related party (A) 476.7 447.3 Other noncurrent liabilities 3.0 1.4 Total Liabilities $553.7 $506.8 Noncontrolling interests (A) $2.6 $30.0 (A) During the second quarter of fiscal year 2023, approximately $29 of investments attributable to the noncontrolling partner of NGHC were converted to shareholder loans. This noncash activity is presented within “Other equity transactions” related to noncontrolling interests on our consolidated statements of equity for the three and six months ended 31 March 2023.

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Schedule of Consolidated Sales Disaggregated by Supply Mode	Disaggregation of Revenue The tables below present our consolidated sales disaggregated by supply mode for each of our reportable segments for the second quarter and first six months of fiscal years 2023 and 2022. We believe this presentation best depicts the nature, timing, type of customer, and contract terms for our sales. Three Months Ended 31 March Americas Asia Europe Middle East Corporate Total % 2023 On-site $801.9 $490.3 $259.4 $22.8 $— $1,574.4 49 % Merchant 571.2 323.6 493.5 22.0 — 1,410.3 44 % Sale of equipment — — — — 215.4 215.4 7 % Total $1,373.1 $813.9 $752.9 $44.8 $215.4 $3,200.1 100 % 2022 On-site $716.5 $460.4 $292.0 $17.3 $— $1,486.2 51 % Merchant 470.1 290.8 446.6 11.6 — 1,219.1 41 % Sale of equipment — — — — 239.8 239.8 8 % Total $1,186.6 $751.2 $738.6 $28.9 $239.8 $2,945.1 100 % Six Months Ended 31 March Americas Asia Europe Middle East Corporate Total % 2023 On-site $1,647.7 $948.0 $587.5 $41.6 $— $3,224.8 51 % Merchant 1,109.6 643.7 957.3 44.6 — 2,755.2 43 % Sale of Equipment — — — — 394.8 394.8 6 % Total $2,757.3 $1,591.7 $1,544.8 $86.2 $394.8 $6,374.8 100 % 2022 On-site $1,514.1 $912.0 $617.6 $33.6 $— $3,077.3 52 % Merchant 896.6 619.6 865.2 19.0 — 2,400.4 40 % Sale of Equipment — — — — 461.6 461.6 8 % Total $2,410.7 $1,531.6 $1,482.8 $52.6 $461.6 $5,939.3 100 %
Schedule of Contract Assets and Liabilities	Contract Balances The table below details balances arising from contracts with customers: 31 March 30 September Balance Sheet Location 2023 2022 Assets Contract assets – current Other receivables and current assets $74.2 $69.0 Contract fulfillment costs – current Other receivables and current assets 105.6 84.1 Liabilities Contract liabilities – current Payables and accrued liabilities $396.0 $439.1 Contract liabilities – noncurrent Other noncurrent liabilities 97.7 67.2

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Mar. 31, 2023
Inventory Disclosure [Abstract]
Schedule of Inventory	The components of inventories are as follows: 31 March 30 September 2023 2022 Finished goods $239.1 $162.0 Work in process 27.2 22.0 Raw materials, supplies, and other 379.3 330.2 Inventories $645.6 $514.2

Goodwill (Tables)

Goodwill (Tables)	6 Months Ended
	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Changes to the carrying amount of consolidated goodwill by segment for the six months ended 31 March 2023 are as follows: Americas Asia Europe Middle East Corporate Total Goodwill, net at 30 September 2022 $143.2 $172.7 $457.5 $15.8 $33.8 $823.0 Currency translation and other 8.7 4.2 47.9 — 0.1 60.9 Goodwill, net at 31 March 2023 $151.9 $176.9 $505.4 $15.8 $33.9 $883.9 31 March 30 September 2023 2022 Goodwill, gross $1,218.0 $1,096.0 Accumulated impairment losses (A) (334.1) (273.0) Goodwill, net $883.9 $823.0 (A) Accumulated impairment losses are attributable to our Latin America reporting unit ("LASA") within the Americas segment and include the impact of currency translation.

Financial Instruments (Tables)

Financial Instruments (Tables)	6 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Instruments	The table below summarizes our outstanding currency price risk management instruments: 31 March 2023 30 September 2022 US$ Years US$ Years Forward Exchange Contracts: Cash flow hedges $4,628.7 0.6 $4,525.0 0.7 Net investment hedges 860.4 2.9 542.2 2.2 Not designated 842.2 0.3 534.3 0.3 Total Forward Exchange Contracts $6,331.3 0.9 $5,601.5 0.8 The table below summarizes our outstanding interest rate management contracts and cross currency interest rate swaps: 31 March 2023 30 September 2022 US$ Average Average Years US$ Average Average Years Interest rate swaps $800.0 Various 1.64 % 4.5 $800.0 Various 1.64 % 5.0 Cross currency interest rate swaps $150.1 3.89 % 3.01 % 1.0 $176.7 4.12 % 3.07 % 1.2 Cross currency interest rate swaps $630.3 4.75 % 3.05 % 2.4 $785.7 4.78 % 3.05 % 2.3 Cross currency interest rate swaps $20.3 5.39 % 3.54 % 0.7 $37.7 5.39 % 3.54 % 1.2
Schedule of Cumulative Basis Adjustments for Fair Value Hedges	The table below provides the amounts recorded on the consolidated balance sheet related to cumulative basis adjustments for fair value hedges: Carrying amounts of hedged item Cumulative hedging adjustment, included in carrying amount 31 March 30 September 31 March 30 September Balance Sheet Location 2023 2022 2023 2022 Long-term debt $2,031.0 $2,012.9 ($59.9) ($77.1)
Schedule of Fair Value and Balance Sheet Location of Derivative Instruments	The table below summarizes the fair value and balance sheet location of our outstanding derivatives: Balance Sheet 31 March 30 September Balance Sheet 31 March 30 September Location 2023 2022 Location 2023 2022 Derivatives Designated as Hedging Instruments: Forward exchange contracts Other receivables and current assets $82.1 $71.6 Payables and accrued liabilities $67.2 $226.2 Interest rate management contracts Other receivables and current assets 8.5 36.7 Payables and accrued liabilities 2.5 — Forward exchange contracts Other noncurrent assets 23.5 60.8 Other noncurrent liabilities 12.9 46.9 Interest rate management contracts Other noncurrent assets 6.9 12.5 Other noncurrent liabilities 82.5 91.2 Total Derivatives Designated as Hedging Instruments $121.0 $181.6 $165.1 $364.3 Derivatives Not Designated as Hedging Instruments: Forward exchange contracts Other receivables and current assets 4.4 6.1 Payables and accrued liabilities 4.6 2.1 Interest rate management contracts Other receivables and current assets 0.2 — Payables and accrued liabilities — — Forward exchange contracts Other noncurrent assets 0.2 0.1 Other noncurrent liabilities 0.1 0.1 Interest rate management contracts Other noncurrent assets — 1.3 Other noncurrent liabilities — — Total Derivatives Not Designated as Hedging Instruments $4.8 $7.5 $4.7 $2.2 Total Derivatives $125.8 $189.1 $169.8 $366.5
Schedule of Gains and Losses Recognized in Other Comprehensive Income Related Net Investment and Cash Flow Hedges	The tables below summarize gains (losses) recognized in other comprehensive income during the period related to our net investment and cash flow hedging relationships: Three Months Ended Six Months Ended 31 March 31 March 2023 2022 2023 2022 Net Investment Hedging Relationships Forward exchange contracts ($15.3) ($4.2) ($62.4) $10.3 Foreign currency debt (35.6) 39.4 (150.9) 67.0 Cross currency interest rate swaps (3.2) (7.4) (13.8) (9.7) Total Amount Recognized in OCI (54.1) 27.8 (227.1) 67.6 Tax effects 13.3 (6.9) 55.8 (16.7) Net Amount Recognized in OCI ($40.8) $20.9 ($171.3) $50.9 Three Months Ended Six Months Ended 31 March 31 March 2023 2022 2023 2022 Derivatives in Cash Flow Hedging Relationships Forward exchange contracts $5.3 ($40.1) $194.1 ($63.5) Forward exchange contracts, excluded components (5.9) 2.0 (11.5) (0.7) Other (A) (14.6) (16.6) (38.6) (2.1) Total Amount Recognized in OCI (15.2) (54.7) 144.0 (66.3) Tax effects 0.6 15.3 (37.6) 26.4 Net Amount Recognized in OCI ($14.6) ($39.4) $106.4 ($39.9)
Schedule of Amounts Recognized in Income Related to Cash Flow and Fair Value Hedges	The table below summarizes the location and amounts recognized in income related to our cash flow and fair value hedging relationships by contract type: Three Months Ended 31 March Sales Cost of Sales Interest Expense Other Non-Operating Income (Expense), Net 2023 2022 2023 2022 2023 2022 2023 2022 Total presented in consolidated income statements that includes effects of hedging below $3,200.1 $2,945.1 $2,282.8 $2,151.6 $40.9 $32.3 ($13.9) $9.1 (Gain) Loss Effects of Cash Flow Hedging: Forward Exchange Contracts: Amount reclassified from OCI into income $0.1 $0.3 $2.4 $0.4 $— $— ($6.1) $26.4 Amount excluded from effectiveness testing recognized in earnings based on amortization approach — — — — — — 3.3 1.1 Other: Amount reclassified from OCI into income — — — — 1.3 1.5 6.7 4.9 Total (Gain) Loss Reclassified from OCI to Income 0.1 0.3 2.4 0.4 1.3 1.5 3.9 32.4 Tax effects — (0.1) (0.6) (0.1) (0.6) (0.6) (0.7) (7.8) Net (Gain) Loss Reclassified from OCI to Income $0.1 $0.2 $1.8 $0.3 $0.7 $0.9 $3.2 $24.6 (Gain) Loss Effects of Fair Value Hedging: Other: Hedged items $— $— $— $— $12.8 ($22.0) $— $— Derivatives designated as hedging instruments — — — — (12.8) 22.0 — — Total (Gain) Loss Recognized in Income $— $— $— $— $— $— $— $— Six Months Ended 31 March Sales Cost of Sales Interest Expense Other Non-Operating Income (Expense), Net 2023 2022 2023 2022 2023 2022 2023 2022 Total presented in consolidated income statements that includes effects of hedging below $6,374.8 $5,939.3 $4,555.1 $4,375.2 $82.1 $62.8 ($14.5) $31.7 (Gain) Loss Effects of Cash Flow Hedging: Forward Exchange Contracts: Amount reclassified from OCI into income $0.1 $0.7 $3.6 $0.3 $— $— ($123.9) $40.9 Amount excluded from effectiveness testing recognized in earnings based on amortization approach — — — — — — 5.3 2.4 Other: Amount reclassified from OCI into income — — — — 2.8 2.9 29.4 12.2 Total (Gain) Loss Reclassified from OCI to Income 0.1 0.7 3.6 0.3 2.8 2.9 (89.2) 55.5 Tax effects — (0.2) (0.8) (0.1) (1.1) (1.1) 21.7 (13.3) Net (Gain) Loss Reclassified from OCI to Income $0.1 $0.5 $2.8 $0.2 $1.7 $1.8 ($67.5) $42.2 (Gain) Loss Effects of Fair Value Hedging: Other: Hedged items $— $— $— $— $17.2 ($24.5) $— $— Derivatives designated as hedging instruments — — — — (17.2) 24.5 — — Total (Gain) Loss Recognized in Income $— $— $— $— $— $— $— $—
Schedule of Effects of Derivatives Not Designated as a Hedging Instrument	The table below summarizes the location and amounts recognized in income related to our derivatives not designated as hedging instruments by contract type: Three Months Ended 31 March Other Income (Expense), Net Other Non-Operating Income (Expense), Net 2023 2022 2023 2022 The Effects of Derivatives Not Designated as Hedging Instruments: Forward Exchange Contracts $0.7 $0.3 ($1.1) ($0.7) Other — — 0.8 0.1 Total (Gain) Loss Recognized in Income $0.7 $0.3 ($0.3) ($0.6) Six Months Ended 31 March Other Income (Expense), Net Other Non-Operating Income (Expense), Net 2023 2022 2023 2022 The Effects of Derivatives Not Designated as Hedging Instruments: Forward Exchange Contracts $1.3 $1.4 ($2.7) ($1.3) Other — — 1.9 0.2 Total (Gain) Loss Recognized in Income $1.3 $1.4 ($0.8) ($1.1)

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Schedule of Carrying Value and Fair Value of Financial Instruments	The carrying values and fair values of financial instruments were as follows: 31 March 2023 30 September 2022 Carrying Value Fair Value Carrying Value Fair Value Assets Derivatives Forward exchange contracts $110.2 $110.2 $138.6 $138.6 Interest rate management contracts 15.6 15.6 50.5 50.5 Liabilities Derivatives Forward exchange contracts $84.8 $84.8 $275.3 $275.3 Interest rate management contracts 85.0 85.0 91.2 91.2 Long-term debt, including current portion and related party 9,133.9 8,409.1 7,634.1 6,721.2
Schedule of Fair Value Assets and Liabilities Measured On Recurring Basis	The table below summarizes assets and liabilities on the consolidated balance sheets that are measured at fair value on a recurring basis: 31 March 2023 30 September 2022 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets at Fair Value Derivatives Forward exchange contracts $110.2 $— $110.2 $— $138.6 $— $138.6 $— Interest rate management contracts 15.6 — 15.6 — 50.5 — 50.5 — Total Assets at Fair Value $125.8 $— $125.8 $— $189.1 $— $189.1 $— Liabilities at Fair Value Derivatives Forward exchange contracts $84.8 $— $84.8 $— $275.3 $— $275.3 $— Interest rate management contracts 85.0 — 85.0 — 91.2 — 91.2 — Total Liabilities at Fair Value $169.8 $— $169.8 $— $366.5 $— $366.5 $—

Debt (Tables)

Debt (Tables)	6 Months Ended
	Mar. 31, 2023
Debt Disclosure [Abstract]
Schedule of Interest Rate, Maturity, and Carrying Amount of Senior Notes	The interest rate, maturity, and carrying amount as of 31 March 2023 for each of the notes issued under our Green Finance Framework are summarized in the table below: Fiscal Year 31 March 2023 Payable in U.S. Dollars Note 4.800% 2033 $600.0 Payable in Euros Eurobonds 4.000% 2035 758.8 Total $1,358.8

Retirement Benefits (Tables)

Retirement Benefits (Tables)	6 Months Ended
	Mar. 31, 2023
Retirement Benefits [Abstract]
Schedule of Net Periodic (Benefit) Cost	The components of net periodic cost (benefit) for our defined benefit pension plans for the three and six months ended 31 March 2023 and 2022 were as follows: Pension Benefits 2023 2022 Three Months Ended 31 March U.S. Inter-national Total U.S. Inter-national Total Service cost $2.8 $3.0 $5.8 $4.6 $5.6 $10.2 Non-service cost (benefit): Interest cost 32.5 14.9 47.4 18.4 7.6 26.0 Expected return on plan assets (31.8) (12.2) (44.0) (42.1) (17.6) (59.7) Prior service cost amortization 0.3 0.1 0.4 0.3 — 0.3 Actuarial loss amortization 15.0 3.0 18.0 16.6 3.8 20.4 Settlements 0.9 0.2 1.1 0.9 0.2 1.1 Other — 0.2 0.2 — 0.2 0.2 Net Periodic Cost (Benefit) $19.7 $9.2 $28.9 ($1.3) ($0.2) ($1.5) Pension Benefits 2023 2022 Six Months Ended 31 March U.S. Inter-national Total U.S. Inter-national Total Service cost $5.5 $6.3 $11.8 $9.2 $11.2 $20.4 Non-service cost (benefit): Interest cost 65.0 29.3 94.3 36.8 15.2 52.0 Expected return on plan assets (63.6) (24.0) (87.6) (84.2) (35.3) (119.5) Prior service cost amortization 0.6 0.1 0.7 0.6 — 0.6 Actuarial loss amortization 29.8 6.0 35.8 33.3 7.7 41.0 Settlements 0.9 0.2 1.1 1.8 0.2 2.0 Curtailments — (1.9) (1.9) — — — Other — 0.5 0.5 — 1.0 1.0 Net Periodic Cost (Benefit) $38.2 $16.5 $54.7 ($2.5) $— ($2.5)

Share-Based Compensation (Table

Share-Based Compensation (Tables)	6 Months Ended
	Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]
Schedule of Recognized Share-Based Compensation Cost	Share-based compensation cost recognized on the consolidated income statements is summarized below: Three Months Ended Six Months Ended 31 March 31 March 2023 2022 2023 2022 Before-tax share-based compensation cost $15.5 $10.5 $32.4 $27.3 Income tax benefit (3.9) (2.6) (7.9) (6.7) After-tax share-based compensation cost $11.6 $7.9 $24.5 $20.6
Schedule of Assumptions for Fair Value of Market-Based Deferred Stock Units	The calculation of the fair value of market-based deferred stock units used the following assumptions: Expected volatility 32.5 % Risk-free interest rate 4.0 % Expected dividend yield 2.4 %

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Mar. 31, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The tables below summarize changes in accumulated other comprehensive loss ("AOCL"), net of tax, attributable to Air Products for the three and six months ended 31 March 2023: Derivatives Foreign Pension and Total Balance at 31 December 2022 ($19.0) ($1,576.0) ($623.3) ($2,218.3) Other comprehensive (loss) income before reclassifications (14.6) 51.0 — 36.4 Amounts reclassified from AOCL 5.8 (0.3) 14.4 19.9 Net current period other comprehensive (loss) income (8.8) 50.7 14.4 56.3 Amount attributable to noncontrolling interests (1.3) 2.6 — 1.3 Balance at 31 March 2023 ($26.5) ($1,527.9) ($608.9) ($2,163.3) Derivatives Foreign Pension and Total Balance at 30 September 2022 ($71.9) ($2,072.4) ($641.8) ($2,786.1) Other comprehensive income before reclassifications 106.4 560.6 6.7 673.7 Amounts reclassified from AOCL (62.9) (0.3) 26.3 (36.9) Net current period other comprehensive income 43.5 560.3 33.0 636.8 Amount attributable to noncontrolling interests (1.9) 15.8 0.1 14.0 Balance at 31 March 2023 ($26.5) ($1,527.9) ($608.9) ($2,163.3)
Schedule of Reclassification out of Accumulated Other Comprehensive Income (Loss)	The table below summarizes the reclassifications out of AOCL and the affected line item on the consolidated income statements: Three Months Ended Six Months Ended 31 March 31 March 2023 2022 2023 2022 Loss (Gain) on Cash Flow Hedges, net of tax Sales $0.1 $0.2 $0.1 $0.5 Cost of sales 1.8 0.3 2.8 0.2 Interest expense 0.7 0.9 1.7 1.8 Other non-operating income (expense), net 3.2 24.6 (67.5) 42.2 Total Loss (Gain) on Cash Flow Hedges, net of tax $5.8 $26.0 ($62.9) $44.7 Currency Translation Adjustment Business and asset actions ($0.3) $— ($0.3) $— Pension and Postretirement Benefits, net of tax (A) $14.4 $15.9 $26.3 $31.9 (A) The components of net periodic benefit cost reclassified out of AOCL include items such as prior service cost amortization, actuarial loss amortization, settlements, and curtailments and are included in “Other non-operating income (expense), net” on the consolidated income statements. Refer to Note 12, Retirement Benefits , for additional information.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Schedule of Computation of Basic and Diluted Earnings Per Share	The table below details the computation of basic and diluted earnings per share ("EPS"): Three Months Ended Six Months Ended 31 March 31 March 2023 2022 2023 2022 Numerator Net income attributable to Air Products $439.8 $530.5 $1,012.0 $1,090.9 Denominator (in millions) Weighted average common shares — Basic 222.3 222.0 222.3 222.0 Effect of dilutive securities Employee stock option and other award plans 0.4 0.5 0.4 0.5 Weighted average common shares — Diluted 222.7 222.5 222.7 222.5 Per Share Data (U.S. Dollars per share) Basic EPS attributable to Air Products $1.98 $2.39 $4.55 $4.91 Diluted EPS attributable to Air Products $1.97 $2.38 $4.54 $4.90

Business Segment Information (T

Business Segment Information (Tables)	6 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Summary by Business Segment Americas Asia Europe Middle East Corporate Total Three Months Ended 31 March 2023 Sales $1,373.1 $813.9 $752.9 $44.8 $215.4 $3,200.1 (A) Operating income (loss) 324.2 233.0 173.2 1.3 (86.3) 645.4 (B) Depreciation and amortization 161.7 110.0 48.3 6.6 13.0 339.6 Equity affiliates' income 28.1 7.3 29.5 98.9 2.1 165.9 Three Months Ended 31 March 2022 Sales $1,186.6 $751.2 $738.6 $28.9 $239.8 $2,945.1 (A) Operating income (loss) 275.5 203.6 116.4 4.8 (38.4) 561.9 (B) Depreciation and amortization 153.7 111.8 50.3 6.9 13.2 335.9 Equity affiliates' income 20.1 6.2 23.3 71.1 0.1 120.8 (A) Sales relate to external customers only. All intersegment sales are eliminated in consolidation. (B) Refer to the Reconciliation to Consolidated Results section below. Americas Asia Europe Middle East Corporate Total Six Months Ended 31 March 2023 Sales $2,757.3 $1,591.7 $1,544.8 $86.2 $394.8 $6,374.8 (A) Operating income (loss) 667.2 468.9 319.0 8.0 (165.7) 1,297.4 (B) Depreciation and amortization 317.7 211.9 92.6 13.2 25.7 661.1 Equity affiliates' income 44.5 14.7 47.2 163.0 6.5 275.9 Six Months Ended 31 March 2022 Sales $2,410.7 $1,531.6 $1,482.8 $52.6 $461.6 $5,939.3 (A) Operating income (loss) 542.7 424.7 215.6 9.6 (107.7) 1,084.9 (B) Depreciation and amortization 309.0 222.6 100.1 13.0 23.5 668.2 Equity affiliates' income 54.3 12.8 37.2 163.4 0.9 268.6 Total Assets 31 March 2023 $8,859.0 $7,422.7 $3,914.4 $4,451.8 $4,787.5 $29,435.4 30 September 2022 8,237.7 6,968.7 3,645.1 2,980.7 5,360.4 27,192.6 (A) Sales relate to external customers only. All intersegment sales are eliminated in consolidation. (B) Refer to the Reconciliation to Consolidated Results section below.
Reconciliation of Segments to Consolidated Operating Income	Reconciliation to Consolidated Results The table below reconciles total operating income disclosed in the tables above to consolidated operating income as reflected on our consolidated income statements: Three Months Ended Six Months Ended 31 March 31 March Operating Income 2023 2022 2023 2022 Total $645.4 $561.9 $1,297.4 $1,084.9 Business and asset actions (185.6) — (185.6) — Consolidated Operating Income $459.8 $561.9 $1,111.8 $1,084.9

Variable Interest Entities (By

Variable Interest Entities (By Balance Sheet Items) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Sep. 30, 2022
Variable Interest Entity [Line Items]
Cash and cash items	$ 2,242.4		$ 2,242.4		$ 2,711
Trade receivables, net	1,714.7		1,714.7		1,794.4
Prepaid expenses	224.7		224.7		156.8
Other receivables and current assets	622.9		622.9		515.8
Plant and equipment, net	15,698.4		15,698.4		14,160.5
Other noncurrent assets	1,015.5		1,015.5		947
Total Assets	29,435.4		29,435.4		27,192.6
Payables and accrued liabilities	2,489.3		2,489.3		2,771.6
Accrued income taxes	128.2		128.2		135.2
Long-term debt – related party	688.6		688.6		652
Other noncurrent liabilities	1,096.3		1,096.3		1,099.1
Total Liabilities	14,745.2		14,745.2		13,490.2
Noncontrolling Interests	631.9		631.9		558.4
Shareholder loans	30.3	$ (2.4)	31.6	$ (1.7)
Non- controlling Interests
Variable Interest Entity [Line Items]
Shareholder loans	29.2	$ (2.8)	29.4	$ (2.9)
NEOM Green Hydrogen Company | Non- controlling Interests
Variable Interest Entity [Line Items]
Shareholder loans	29
Variable Interest Entity, Primary Beneficiary | NEOM Green Hydrogen Company
Variable Interest Entity [Line Items]
Cash and cash items	129.2		129.2		274.7
Trade receivables, net	0		0		1.3
Prepaid expenses	3.3		3.3		0.1
Other receivables and current assets	52.3		52.3		23.3
Plant and equipment, net	613.3		613.3		218.8
Other noncurrent assets	11.1		11.1		1.5
Total Assets	809.2		809.2		519.7
Payables and accrued liabilities	73.6		73.6		58.1
Accrued income taxes	0.4		0.4		0
Long-term debt – related party	476.7		476.7		447.3
Other noncurrent liabilities	3		3		1.4
Total Liabilities	553.7		553.7		506.8
Noncontrolling Interests	$ 2.6		$ 2.6		$ 30

Variable Interest Entities (Nar

Variable Interest Entities (Narrative) (Details)	6 Months Ended
	Mar. 31, 2023
NEOM Green Hydrogen Company | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Variable Interest Entity, Ownership interest by Air Products (percent)	33.30%

Business and Asset Actions (Det

Business and Asset Actions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Restructuring and Related Activities [Abstract]
Business and asset actions	$ 185.6	$ 0	$ 185.6	$ 0
Business and asset actions attributable to Air Products after tax	$ 153.7

Revenue Recognition (Disaggrega

Revenue Recognition (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Sales	$ 3,200.1	$ 2,945.1	$ 6,374.8	$ 5,939.3
Segment Total
Disaggregation of Revenue [Line Items]
Sales	$ 3,200.1	$ 2,945.1	$ 6,374.8	$ 5,939.3
Percent sales by supply mode	100%	100%	100%	100%
Americas | Segment Total
Disaggregation of Revenue [Line Items]
Sales	$ 1,373.1	$ 1,186.6	$ 2,757.3	$ 2,410.7
Asia | Segment Total
Disaggregation of Revenue [Line Items]
Sales	813.9	751.2	1,591.7	1,531.6
Europe | Segment Total
Disaggregation of Revenue [Line Items]
Sales	752.9	738.6	1,544.8	1,482.8
Middle East and India | Segment Total
Disaggregation of Revenue [Line Items]
Sales	44.8	28.9	86.2	52.6
Corporate and other | Segment Total
Disaggregation of Revenue [Line Items]
Sales	215.4	239.8	394.8	461.6
On-site | Segment Total
Disaggregation of Revenue [Line Items]
Sales	$ 1,574.4	$ 1,486.2	$ 3,224.8	$ 3,077.3
Percent sales by supply mode	49%	51%	51%	52%
On-site | Americas | Segment Total
Disaggregation of Revenue [Line Items]
Sales	$ 801.9	$ 716.5	$ 1,647.7	$ 1,514.1
On-site | Asia | Segment Total
Disaggregation of Revenue [Line Items]
Sales	490.3	460.4	948	912
On-site | Europe | Segment Total
Disaggregation of Revenue [Line Items]
Sales	259.4	292	587.5	617.6
On-site | Middle East and India | Segment Total
Disaggregation of Revenue [Line Items]
Sales	22.8	17.3	41.6	33.6
On-site | Corporate and other | Segment Total
Disaggregation of Revenue [Line Items]
Sales	0	0	0	0
Merchant | Segment Total
Disaggregation of Revenue [Line Items]
Sales	$ 1,410.3	$ 1,219.1	$ 2,755.2	$ 2,400.4
Percent sales by supply mode	44%	41%	43%	40%
Merchant | Americas | Segment Total
Disaggregation of Revenue [Line Items]
Sales	$ 571.2	$ 470.1	$ 1,109.6	$ 896.6
Merchant | Asia | Segment Total
Disaggregation of Revenue [Line Items]
Sales	323.6	290.8	643.7	619.6
Merchant | Europe | Segment Total
Disaggregation of Revenue [Line Items]
Sales	493.5	446.6	957.3	865.2
Merchant | Middle East and India | Segment Total
Disaggregation of Revenue [Line Items]
Sales	22	11.6	44.6	19
Merchant | Corporate and other | Segment Total
Disaggregation of Revenue [Line Items]
Sales	0	0	0	0
Sale of Equipment | Segment Total
Disaggregation of Revenue [Line Items]
Sales	$ 215.4	$ 239.8	$ 394.8	$ 461.6
Percent sales by supply mode	7%	8%	6%	8%
Sale of Equipment | Americas | Segment Total
Disaggregation of Revenue [Line Items]
Sales	$ 0	$ 0	$ 0	$ 0
Sale of Equipment | Asia | Segment Total
Disaggregation of Revenue [Line Items]
Sales	0	0	0	0
Sale of Equipment | Europe | Segment Total
Disaggregation of Revenue [Line Items]
Sales	0	0	0	0
Sale of Equipment | Middle East and India | Segment Total
Disaggregation of Revenue [Line Items]
Sales	0	0	0	0
Sale of Equipment | Corporate and other | Segment Total
Disaggregation of Revenue [Line Items]
Sales	$ 215.4	$ 239.8	$ 394.8	$ 461.6

Revenue Recognition (Remaining

Revenue Recognition (Remaining Performance Obligations) (Details) $ in Billions	Mar. 31, 2023 USD ($)
Revenue from Contract with Customer [Abstract]
Transaction price allocated to remaining performance obligations	$ 24
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of remaining performance obligation	50%
Estimated timing of recognition of performance obligation	5 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of remaining performance obligation	50%
Estimated timing of recognition of performance obligation

Revenue Recognition (Contract A

Revenue Recognition (Contract Assets and Liabilities) (Details) - USD ($) $ in Millions	6 Months Ended
	Mar. 31, 2023	Sep. 30, 2022
Contract Assets and Liabilities
Contract assets - current	$ 74.2	$ 69
Contract fulfillment costs - current	105.6	84.1
Contract liabilities - current	396	439.1
Contract liabilities - noncurrent	97.7	$ 67.2
Revenue recognized that was previously included in current contract liabilities	$ 165

Inventories (Schedule of Invent

Inventories (Schedule of Inventory) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Sep. 30, 2022
Inventory Disclosure [Abstract]
Finished goods	$ 239.1	$ 162
Work in process	27.2	22
Raw materials, supplies, and other	379.3	330.2
Inventories	$ 645.6	$ 514.2

Equity Affiliates (Details)

Equity Affiliates (Details) - USD ($) $ in Millions				11 Months Ended	12 Months Ended
	Jan. 19, 2023	Oct. 27, 2021	Sep. 27, 2021	Dec. 31, 2023	Dec. 31, 2023	Sep. 30, 2015	Mar. 31, 2023
JIGPC
Schedule of Equity Method Investments [Line Items]
Payments for equity investment	$ 908	$ 1,600
Ownership interest percentage		55%					55%
Ownership percentage attributable to noncontrolling partner		4%					4%
Investment balance							$ 2,724
JIGPC | Non- controlling Interests
Schedule of Equity Method Investments [Line Items]
Payments for equity investment	73	$ 130
JIGPC | Forecast
Schedule of Equity Method Investments [Line Items]
Payments for equity investment					$ 115
JIGPC | Aramco
Schedule of Equity Method Investments [Line Items]
Definitive agreement for acquisition of assets, value			$ 12,000
Acquisition of assets	$ 4,150	$ 7,390
Term of agreement to commission, operate, and maintain the project assets			25 years
JIGPC | Aramco | Forecast | Subsequent event
Schedule of Equity Method Investments [Line Items]
Acquisition of assets				$ 525
JGPC | Aramco
Schedule of Equity Method Investments [Line Items]
Term of oxygen and nitrogen supply agreement						20 years

Goodwill (Schedule of Goodwill

Goodwill (Schedule of Goodwill by Segment) (Details) $ in Millions	6 Months Ended
	Mar. 31, 2023 USD ($)
Goodwill [Roll Forward]
Goodwill, net, beginning balance	$ 823
Currency translation and other	60.9
Goodwill, net, ending balance	883.9
Americas
Goodwill [Roll Forward]
Goodwill, net, beginning balance	143.2
Currency translation and other	8.7
Goodwill, net, ending balance	151.9
Asia
Goodwill [Roll Forward]
Goodwill, net, beginning balance	172.7
Currency translation and other	4.2
Goodwill, net, ending balance	176.9
Europe
Goodwill [Roll Forward]
Goodwill, net, beginning balance	457.5
Currency translation and other	47.9
Goodwill, net, ending balance	505.4
Middle East and India
Goodwill [Roll Forward]
Goodwill, net, beginning balance	15.8
Currency translation and other	0
Goodwill, net, ending balance	15.8
Corporate and other
Goodwill [Roll Forward]
Goodwill, net, beginning balance	33.8
Currency translation and other	0.1
Goodwill, net, ending balance	$ 33.9

Goodwill (Schedule of Accumulat

Goodwill (Schedule of Accumulated Impairment Losses) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Sep. 30, 2022
Goodwill [Line Items]
Goodwill, gross	$ 1,218	$ 1,096
Goodwill, net	883.9	823
Americas
Goodwill [Line Items]
Goodwill, accumulated impairment losses	(334.1)	(273)
Goodwill, net	$ 151.9	$ 143.2

Financial Instruments (Narrativ

Financial Instruments (Narrative) (Details) € in Millions	6 Months Ended		9 Months Ended	12 Months Ended
	Mar. 31, 2023 EUR (€)	Mar. 31, 2023 USD ($)	Jun. 30, 2022 EUR (€)	Sep. 30, 2022 USD ($)
Derivative [Line Items]
Net liability position of derivatives with credit risk-related contingent features		$ 111,500,000		$ 114,800,000
Collateral posted on liability positions with credit risk-related contingent features		0
Collateral amount that counterparties would be required to post		$ 37,300,000		62,800,000
Forward exchange contracts | Cash flow hedges
Derivative [Line Items]
Maximum remaining maturity of foreign currency derivatives	3 years 2 months 12 days	3 years 2 months 12 days
Foreign currency debt | Euro Denominated
Derivative [Line Items]
Notional amount included in designated foreign currency denominated debt	€ 1,979.9	$ 2,146,100,000	€ 1,265.4	$ 1,240,400,000

Financial Instruments (Currency

Financial Instruments (Currency Price Risk Management Instruments) (Details) - Forward exchange contracts - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Mar. 31, 2023	Sep. 30, 2022
Derivative [Line Items]
US$ Notional	$ 6,331.3	$ 5,601.5
Years Average Maturity	10 months 24 days	9 months 18 days
Designated as hedging instrument | Cash flow hedges
Derivative [Line Items]
US$ Notional	$ 4,628.7	$ 4,525
Years Average Maturity	7 months 6 days	8 months 12 days
Designated as hedging instrument | Net investment hedges
Derivative [Line Items]
US$ Notional	$ 860.4	$ 542.2
Years Average Maturity	2 years 10 months 24 days	2 years 2 months 12 days
Not designated as hedging instrument
Derivative [Line Items]
US$ Notional	$ 842.2	$ 534.3
Years Average Maturity	3 months 18 days	3 months 18 days

Financial Instruments (Interest

Financial Instruments (Interest Rate Management Contracts and Cross Currency Interest Rate Swaps) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Mar. 31, 2023	Sep. 30, 2022
Interest Rate Swaps Contracts | Designated as hedging instrument | Fair Value Hedges
Derivative [Line Items]
US$ Notional	$ 800	$ 800
Average Pay %	Various	Various
Average Receive %	1.64%	1.64%
Years Average Maturity	4 years 6 months	5 years
Cross currency interest rate swaps | Designated as hedging instrument | Net investment hedges
Derivative [Line Items]
US$ Notional	$ 150.1	$ 176.7
Average Pay %	3.89%	4.12%
Average Receive %	3.01%	3.07%
Years Average Maturity	1 year	1 year 2 months 12 days
Cross currency interest rate swaps | Designated as hedging instrument | Cash flow hedges
Derivative [Line Items]
US$ Notional	$ 630.3	$ 785.7
Average Pay %	4.75%	4.78%
Average Receive %	3.05%	3.05%
Years Average Maturity	2 years 4 months 24 days	2 years 3 months 18 days
Cross currency interest rate swaps | Not designated as hedging instrument
Derivative [Line Items]
US$ Notional	$ 20.3	$ 37.7
Average Pay %	5.39%	5.39%
Average Receive %	3.54%	3.54%
Years Average Maturity	8 months 12 days	1 year 2 months 12 days

Financial Instruments (Carrying

Financial Instruments (Carrying Amount and Cumulative Hedging Adjustment) (Details) - Long-term debt - USD ($) $ in Millions	Mar. 31, 2023	Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying amounts of hedged item	$ 2,031	$ 2,012.9
Cumulative hedging adjustment, included in carrying amount	$ (59.9)	$ (77.1)

Financial Instruments (Fair Val

Financial Instruments (Fair Value and Balance Sheet Location of Derivatives) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Sep. 30, 2022
Derivative [Line Items]
Total Derivatives, Assets	$ 125.8	$ 189.1
Total Derivatives, Liabilities	169.8	366.5
Designated as hedging instrument
Derivative [Line Items]
Total Derivatives, Assets	121	181.6
Total Derivatives, Liabilities	165.1	364.3
Designated as hedging instrument | Other Receivables and Current Assets | Forward exchange contracts
Derivative [Line Items]
Total Derivatives, Assets	82.1	71.6
Designated as hedging instrument | Other Receivables and Current Assets | Interest Rate Management Contracts
Derivative [Line Items]
Total Derivatives, Assets	8.5	36.7
Designated as hedging instrument | Other Noncurrent Assets | Forward exchange contracts
Derivative [Line Items]
Total Derivatives, Assets	23.5	60.8
Designated as hedging instrument | Other Noncurrent Assets | Interest Rate Management Contracts
Derivative [Line Items]
Total Derivatives, Assets	6.9	12.5
Designated as hedging instrument | Payables and Accrued Liabilities | Forward exchange contracts
Derivative [Line Items]
Total Derivatives, Liabilities	67.2	226.2
Designated as hedging instrument | Payables and Accrued Liabilities | Interest Rate Management Contracts
Derivative [Line Items]
Total Derivatives, Liabilities	2.5	0
Designated as hedging instrument | Other Noncurrent Liabilities | Forward exchange contracts
Derivative [Line Items]
Total Derivatives, Liabilities	12.9	46.9
Designated as hedging instrument | Other Noncurrent Liabilities | Interest Rate Management Contracts
Derivative [Line Items]
Total Derivatives, Liabilities	82.5	91.2
Not designated as hedging instrument
Derivative [Line Items]
Total Derivatives, Assets	4.8	7.5
Total Derivatives, Liabilities	4.7	2.2
Not designated as hedging instrument | Other Receivables and Current Assets | Forward exchange contracts
Derivative [Line Items]
Total Derivatives, Assets	4.4	6.1
Not designated as hedging instrument | Other Receivables and Current Assets | Interest Rate Management Contracts
Derivative [Line Items]
Total Derivatives, Assets	0.2	0
Not designated as hedging instrument | Other Noncurrent Assets | Forward exchange contracts
Derivative [Line Items]
Total Derivatives, Assets	0.2	0.1
Not designated as hedging instrument | Other Noncurrent Assets | Interest Rate Management Contracts
Derivative [Line Items]
Total Derivatives, Assets	0	1.3
Not designated as hedging instrument | Payables and Accrued Liabilities | Forward exchange contracts
Derivative [Line Items]
Total Derivatives, Liabilities	4.6	2.1
Not designated as hedging instrument | Payables and Accrued Liabilities | Interest Rate Management Contracts
Derivative [Line Items]
Total Derivatives, Liabilities	0	0
Not designated as hedging instrument | Other Noncurrent Liabilities | Forward exchange contracts
Derivative [Line Items]
Total Derivatives, Liabilities	0.1	0.1
Not designated as hedging instrument | Other Noncurrent Liabilities | Interest Rate Management Contracts
Derivative [Line Items]
Total Derivatives, Liabilities	$ 0	$ 0

Financial Instruments (Gains an

Financial Instruments (Gains and Losses Recognized In Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Net Investment Hedging Relationships
Tax effects	$ 10.6	$ (9.2)	$ 48.6	$ (16.8)
Net Amount Recognized in OCI	51	(58.8)	560.6	(18.2)
Derivatives in Cash Flow Hedging Relationships
Tax effects	0.6	15.3	(37.6)	26.4
Net Amount Recognized in OCI	(14.6)	(39.4)	106.4	(39.9)
Net investment hedges
Net Investment Hedging Relationships
Total Amount Recognized in OCI	(54.1)	27.8	(227.1)	67.6
Tax effects	13.3	(6.9)	55.8	(16.7)
Net Amount Recognized in OCI	(40.8)	20.9	(171.3)	50.9
Net investment hedges | Forward exchange contracts
Net Investment Hedging Relationships
Total Amount Recognized in OCI	(15.3)	(4.2)	(62.4)	10.3
Net investment hedges | Foreign currency debt
Net Investment Hedging Relationships
Total Amount Recognized in OCI	(35.6)	39.4	(150.9)	67
Net investment hedges | Cross currency interest rate swaps
Net Investment Hedging Relationships
Total Amount Recognized in OCI	(3.2)	(7.4)	(13.8)	(9.7)
Cash flow hedges
Derivatives in Cash Flow Hedging Relationships
Total Amount Recognized in OCI	(15.2)	(54.7)	144	(66.3)
Tax effects	0.6	15.3	(37.6)	26.4
Net Amount Recognized in OCI	(14.6)	(39.4)	106.4	(39.9)
Cash flow hedges | Forward exchange contracts
Derivatives in Cash Flow Hedging Relationships
Total Amount Recognized in OCI	5.3	(40.1)	194.1	(63.5)
Cash flow hedges | Forward exchange contracts, excluded components
Derivatives in Cash Flow Hedging Relationships
Total Amount Recognized in OCI	(5.9)	2	(11.5)	(0.7)
Cash flow hedges | Other
Derivatives in Cash Flow Hedging Relationships
Total Amount Recognized in OCI	$ (14.6)	$ (16.6)	$ (38.6)	$ (2.1)

Financial Instruments (Cash Flo

Financial Instruments (Cash Flow and Fair Value Hedges Location and Amounts Recognized) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Total presented in consolidated income statements that includes effects of hedging below
Sales	$ 3,200.1	$ 2,945.1	$ 6,374.8	$ 5,939.3
Cost of sales	2,282.8	2,151.6	4,555.1	4,375.2
Interest expense	40.9	32.3	82.1	62.8
Other non-operating income (expense), net	(13.9)	9.1	(14.5)	31.7
(Gain) Loss Effects of Cash Flow Hedging:
Tax effects	(1.9)	(8.6)	19.8	(14.7)
Net (Gain) Loss Reclassified from OCI to Income	5.8	26	(62.9)	44.7
Cash flow hedges | Sales
(Gain) Loss Effects of Cash Flow Hedging:
Amount reclassified from OCI into income	0.1	0.3	0.1	0.7
Tax effects	0	(0.1)	0	(0.2)
Net (Gain) Loss Reclassified from OCI to Income	0.1	0.2	0.1	0.5
Cash flow hedges | Cost of Sales
(Gain) Loss Effects of Cash Flow Hedging:
Amount reclassified from OCI into income	2.4	0.4	3.6	0.3
Tax effects	(0.6)	(0.1)	(0.8)	(0.1)
Net (Gain) Loss Reclassified from OCI to Income	1.8	0.3	2.8	0.2
Cash flow hedges | Interest Expense
(Gain) Loss Effects of Cash Flow Hedging:
Amount reclassified from OCI into income	1.3	1.5	2.8	2.9
Tax effects	(0.6)	(0.6)	(1.1)	(1.1)
Net (Gain) Loss Reclassified from OCI to Income	0.7	0.9	1.7	1.8
Cash flow hedges | Other Non-Operating Income (Expense), Net
(Gain) Loss Effects of Cash Flow Hedging:
Amount reclassified from OCI into income	3.9	32.4	(89.2)	55.5
Tax effects	(0.7)	(7.8)	21.7	(13.3)
Net (Gain) Loss Reclassified from OCI to Income	3.2	24.6	(67.5)	42.2
Cash flow hedges | Forward exchange contracts | Sales
(Gain) Loss Effects of Cash Flow Hedging:
Amount reclassified from OCI into income	0.1	0.3	0.1	0.7
Cash flow hedges | Forward exchange contracts | Cost of Sales
(Gain) Loss Effects of Cash Flow Hedging:
Amount reclassified from OCI into income	2.4	0.4	3.6	0.3
Cash flow hedges | Forward exchange contracts | Interest Expense
(Gain) Loss Effects of Cash Flow Hedging:
Amount reclassified from OCI into income	0	0	0	0
Cash flow hedges | Forward exchange contracts | Other Non-Operating Income (Expense), Net
(Gain) Loss Effects of Cash Flow Hedging:
Amount reclassified from OCI into income	(6.1)	26.4	(123.9)	40.9
Cash flow hedges | Forward exchange contracts, excluded components | Sales
(Gain) Loss Effects of Cash Flow Hedging:
Amount excluded from effectiveness testing recognized in earnings based on amortization approach	0	0	0	0
Cash flow hedges | Forward exchange contracts, excluded components | Cost of Sales
(Gain) Loss Effects of Cash Flow Hedging:
Amount excluded from effectiveness testing recognized in earnings based on amortization approach	0	0	0	0
Cash flow hedges | Forward exchange contracts, excluded components | Interest Expense
(Gain) Loss Effects of Cash Flow Hedging:
Amount excluded from effectiveness testing recognized in earnings based on amortization approach	0	0	0	0
Cash flow hedges | Forward exchange contracts, excluded components | Other Non-Operating Income (Expense), Net
(Gain) Loss Effects of Cash Flow Hedging:
Amount excluded from effectiveness testing recognized in earnings based on amortization approach	3.3	1.1	5.3	2.4
Cash flow hedges | Other | Sales
(Gain) Loss Effects of Cash Flow Hedging:
Amount reclassified from OCI into income	0	0	0	0
Cash flow hedges | Other | Cost of Sales
(Gain) Loss Effects of Cash Flow Hedging:
Amount reclassified from OCI into income	0	0	0	0
Cash flow hedges | Other | Interest Expense
(Gain) Loss Effects of Cash Flow Hedging:
Amount reclassified from OCI into income	1.3	1.5	2.8	2.9
Cash flow hedges | Other | Other Non-Operating Income (Expense), Net
(Gain) Loss Effects of Cash Flow Hedging:
Amount reclassified from OCI into income	6.7	4.9	29.4	12.2
Fair Value Hedges | Sales
(Gain) Loss Effects of Fair Value Hedging:
Total (Gain) Loss Recognized in Income	0	0	0	0
Fair Value Hedges | Cost of Sales
(Gain) Loss Effects of Fair Value Hedging:
Total (Gain) Loss Recognized in Income	0	0	0	0
Fair Value Hedges | Interest Expense
(Gain) Loss Effects of Fair Value Hedging:
Total (Gain) Loss Recognized in Income	0	0	0	0
Fair Value Hedges | Other Non-Operating Income (Expense), Net
(Gain) Loss Effects of Fair Value Hedging:
Total (Gain) Loss Recognized in Income	0	0	0	0
Fair Value Hedges | Other | Sales
(Gain) Loss Effects of Fair Value Hedging:
Hedged items	0	0	0	0
Derivatives designated as hedging instruments	0	0	0	0
Fair Value Hedges | Other | Cost of Sales
(Gain) Loss Effects of Fair Value Hedging:
Hedged items	0	0	0	0
Derivatives designated as hedging instruments	0	0	0	0
Fair Value Hedges | Other | Interest Expense
(Gain) Loss Effects of Fair Value Hedging:
Hedged items	12.8	(22)	17.2	(24.5)
Derivatives designated as hedging instruments	(12.8)	22	(17.2)	24.5
Fair Value Hedges | Other | Other Non-Operating Income (Expense), Net
(Gain) Loss Effects of Fair Value Hedging:
Hedged items	0	0	0	0
Derivatives designated as hedging instruments	$ 0	$ 0	$ 0	$ 0

Financial Instruments (Effects

Financial Instruments (Effects of Derivatives Not Designated as a Hedging Instrument) (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Other Income (Expense), Net
Derivative Instruments, Gain (Loss) [Line Items]
Total (Gain) Loss Recognized in Income	$ 0.7	$ 0.3	$ 1.3	$ 1.4
Other Income (Expense), Net | Forward exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total (Gain) Loss Recognized in Income	0.7	0.3	1.3	1.4
Other Income (Expense), Net | Other
Derivative Instruments, Gain (Loss) [Line Items]
Total (Gain) Loss Recognized in Income	0	0	0	0
Other Non-Operating Income (Expense), Net
Derivative Instruments, Gain (Loss) [Line Items]
Total (Gain) Loss Recognized in Income	(0.3)	(0.6)	(0.8)	(1.1)
Other Non-Operating Income (Expense), Net | Forward exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total (Gain) Loss Recognized in Income	(1.1)	(0.7)	(2.7)	(1.3)
Other Non-Operating Income (Expense), Net | Other
Derivative Instruments, Gain (Loss) [Line Items]
Total (Gain) Loss Recognized in Income	$ 0.8	$ 0.1	$ 1.9	$ 0.2

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule of the Carrying Values and Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Sep. 30, 2022
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion and related party, carrying value	$ 9,133.9	$ 7,634.1
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion and related party, fair value	8,409.1	6,721.2
Forward exchange contracts | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	110.2	138.6
Derivative liabilities	84.8	275.3
Forward exchange contracts | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	110.2	138.6
Derivative liabilities	84.8	275.3
Interest Rate Management Contracts | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	15.6	50.5
Derivative liabilities	85	91.2
Interest Rate Management Contracts | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	15.6	50.5
Derivative liabilities	$ 85	$ 91.2

Fair Value Measurements (Sche_2

Fair Value Measurements (Schedule of Recurring Fair Value Measurements) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Mar. 31, 2023	Sep. 30, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets at Fair Value	$ 125.8	$ 189.1
Total Liabilities at Fair Value	169.8	366.5
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets at Fair Value	0	0
Total Liabilities at Fair Value	0	0
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets at Fair Value	125.8	189.1
Total Liabilities at Fair Value	169.8	366.5
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets at Fair Value	0	0
Total Liabilities at Fair Value	0	0
Forward exchange contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	110.2	138.6
Derivative liabilities	84.8	275.3
Forward exchange contracts | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Forward exchange contracts | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	110.2	138.6
Derivative liabilities	84.8	275.3
Forward exchange contracts | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Interest Rate Management Contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	15.6	50.5
Derivative liabilities	85	91.2
Interest Rate Management Contracts | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Interest Rate Management Contracts | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	15.6	50.5
Derivative liabilities	85	91.2
Interest Rate Management Contracts | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	$ 0	$ 0

Debt (Narrative) (Details)

Debt (Narrative) (Details) € in Millions, $ in Millions	6 Months Ended
	Mar. 31, 2023 USD ($)	Mar. 03, 2023 USD ($)	Mar. 03, 2023 EUR (€)	Sep. 30, 2022 USD ($)
Debt Instrument [Line Items]
Related party debt	$ 822.1			$ 781
Current portion of long-term debt due to related party	133.6			129
Credit facilities of foreign subsidiaries | Foreign credit facilities
Debt Instrument [Line Items]
Maximum borrowing capacity	1,324.4
Credit facility, amount borrowed and outstanding	$ 823.5			$ 457.5
Basis spread (in percent)	1.35%
Senior Notes | Green Bonds
Debt Instrument [Line Items]
Aggregate principal amount		$ 600	€ 700
Deferred financing charges and discounts	$ 15
Carrying amount	$ 1,358.8
Bonds | Saudi Riyal Loan Facility 4.10%
Debt Instrument [Line Items]
Interest rate (percent)				4.10%
Carrying amount				$ 195.6

Debt (Long-term Debt) (Details)

Debt (Long-term Debt) (Details) - Senior Notes $ in Millions	Mar. 31, 2023 USD ($)
Note 4.800%, Green Bonds
Debt Instrument [Line Items]
Interest rate (percent)	4.80%
Carrying amount	$ 600
Eurobonds 4.000%, Green Bonds
Debt Instrument [Line Items]
Interest rate (percent)	4%
Carrying amount	$ 758.8
Green Bonds
Debt Instrument [Line Items]
Carrying amount	$ 1,358.8

Retirement Benefits (Narrative)

Retirement Benefits (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended		12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Sep. 30, 2022
Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Company contributions				$ 15.4	$ 16.1	$ 44.7
Curtailment gain				1.9	0
Defined Benefit Pension Plan | International
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain		$ 1.9		1.9	0
Decrease in projected benefit obligation		9.1
Decrease in accumulated other comprehensive loss		$ 9.1
Defined Benefit Pension Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Total expected contributions for current fiscal year	$ 25			25
Defined Benefit Pension Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Total expected contributions for current fiscal year	35			35
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Amortization of actuarial gain	$ 0.4		$ 0.4	$ 1	$ 0.8

Retirement Benefits (Schedule o

Retirement Benefits (Schedule of Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]				Other non-operating income (expense), net	Other non-operating income (expense), net
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 5.8		$ 10.2	$ 11.8	$ 20.4
Interest Cost	47.4		26	94.3	52
Expected return on plan assets	(44)		(59.7)	(87.6)	(119.5)
Prior service cost amortization	0.4		0.3	0.7	0.6
Actuarial loss amortization	18		20.4	35.8	41
Settlements	1.1		1.1	1.1	2
Curtailments				(1.9)	0
Other	0.2		0.2	0.5	1
Net Periodic Cost (Benefit)	28.9		(1.5)	54.7	(2.5)
U.S. | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	2.8		4.6	5.5	9.2
Interest Cost	32.5		18.4	65	36.8
Expected return on plan assets	(31.8)		(42.1)	(63.6)	(84.2)
Prior service cost amortization	0.3		0.3	0.6	0.6
Actuarial loss amortization	15		16.6	29.8	33.3
Settlements	0.9		0.9	0.9	1.8
Curtailments				0	0
Other	0		0	0	0
Net Periodic Cost (Benefit)	19.7		(1.3)	38.2	(2.5)
International | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	3		5.6	6.3	11.2
Interest Cost	14.9		7.6	29.3	15.2
Expected return on plan assets	(12.2)		(17.6)	(24)	(35.3)
Prior service cost amortization	0.1		0	0.1	0
Actuarial loss amortization	3		3.8	6	7.7
Settlements	0.2		0.2	0.2	0.2
Curtailments		$ (1.9)		(1.9)	0
Other	0.2		0.2	0.5	1
Net Periodic Cost (Benefit)	$ 9.2		$ (0.2)	$ 16.5	$ 0

Commitments and Contingencies (

Commitments and Contingencies (Litigation and Environmental - Narrative) (Details) R$ in Millions	1 Months Ended	6 Months Ended
	Sep. 30, 2010 BRL (R$)	Mar. 31, 2023 USD ($)	Mar. 31, 2023 BRL (R$) site	Mar. 31, 2023 USD ($) site	Sep. 30, 2022 USD ($)
Alleged Anticompete Litigation
Loss Contingencies [Line Items]
Civil fines imposed	R$ 179.2	$ 35,000,000
Provision for litigation		$ 0
Maximum of loss contingency range subject to interest			R$ 179.2	$ 35,000,000
Environmental
Loss Contingencies [Line Items]
Approximate number of sites on which settlement has not been reached | site			28	28
Accrual for environmental loss contingencies				$ 68,900,000	$ 71,300,000
Accrual for environmental loss contingencies, maximum payout period		30 years
Environmental | Minimum
Loss Contingencies [Line Items]
Estimate of possible exposure from environmental loss contingencies				68,000,000
Environmental | Maximum
Loss Contingencies [Line Items]
Estimate of possible exposure from environmental loss contingencies				$ 82,000,000

Commitments and Contingencies_2

Commitments and Contingencies (Pace, Piedmont, Pasadena - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Sep. 30, 2012	Sep. 30, 2008	Sep. 30, 2006	Mar. 31, 2023
Pace, Florida
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies				$ 42	$ 37.7
Change in estimated exposure	$ 19
Pace, Florida | Discontinued operations
Loss Contingencies [Line Items]
Pretax environmental expense	$ 19			$ 42
Piedmont, South Carolina
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies			$ 24		6.9
Piedmont, South Carolina | Discontinued operations
Loss Contingencies [Line Items]
Pretax environmental expense			$ 24
Pasadena, Texas
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies					$ 10.7
Total anticipated exposure		$ 13

Share-Based Compensation (Narra

Share-Based Compensation (Narrative) (Details)	6 Months Ended
	Mar. 31, 2023 $ / shares shares
Market-Based Deferred Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units/shares granted	85,612
Performance period	3 years
Weighted average grant date fair value (in dollars per unit/share) | $ / shares	$ 502.03
Time-Based Deferred Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units/shares granted	113,134
Weighted average grant date fair value (in dollars per unit/share) | $ / shares	$ 309.75
LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grant	1,200,000

Share-Based Compensation (Compe

Share-Based Compensation (Compensation Cost Recognized in Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Share-based Payment Arrangement, Additional Disclosure [Abstract]
Before-tax share-based compensation cost	$ 15.5	$ 10.5	$ 32.4	$ 27.3
Income tax benefit	(3.9)	(2.6)	(7.9)	(6.7)
After-tax share-based compensation cost	$ 11.6	$ 7.9	$ 24.5	$ 20.6

Share-Based Compensation (Marke

Share-Based Compensation (Market-Based Deferred Stock Unit Valuation Assumptions) (Details) - Market-Based Deferred Stock Unit	6 Months Ended
	Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	32.50%
Risk-free interest rate	4%
Expected dividend yield	2.40%

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Rollforward) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 14,517.4	$ 14,375.6	$ 13,702.4	$ 14,088
Other comprehensive (loss) income before reclassifications	36.4		673.7
Amounts reclassified from AOCL	19.9		(36.9)
Total Other Comprehensive Income (Loss)	56.3	(56.3)	636.8	18.5
Amount attributable to noncontrolling interests	1.3	(3)	14	8.2
Ending balance	14,690.2	14,510.7	14,690.2	14,510.7
Derivatives qualifying as hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(19)		(71.9)
Other comprehensive (loss) income before reclassifications	(14.6)		106.4
Amounts reclassified from AOCL	5.8		(62.9)
Total Other Comprehensive Income (Loss)	(8.8)		43.5
Amount attributable to noncontrolling interests	(1.3)		(1.9)
Ending balance	(26.5)		(26.5)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(1,576)		(2,072.4)
Other comprehensive (loss) income before reclassifications	51		560.6
Amounts reclassified from AOCL	(0.3)		(0.3)
Total Other Comprehensive Income (Loss)	50.7		560.3
Amount attributable to noncontrolling interests	2.6		15.8
Ending balance	(1,527.9)		(1,527.9)
Pension and postretirement benefits
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(623.3)		(641.8)
Other comprehensive (loss) income before reclassifications	0		6.7
Amounts reclassified from AOCL	14.4		26.3
Total Other Comprehensive Income (Loss)	14.4		33
Amount attributable to noncontrolling interests	0		0.1
Ending balance	(608.9)		(608.9)
AOCL attributable to Air Products
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(2,218.3)	(1,452.3)	(2,786.1)	(1,515.9)
Total Other Comprehensive Income (Loss)	55	(53.3)	622.8	10.3
Ending balance	$ (2,163.3)	$ (1,505.6)	$ (2,163.3)	$ (1,505.6)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Loss (Reclassification) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Sales	$ (3,200.1)	$ (2,945.1)	$ (6,374.8)	$ (5,939.3)
Cost of sales	2,282.8	2,151.6	4,555.1	4,375.2
Interest expense	40.9	32.3	82.1	62.8
Other non-operating income (expense), net	13.9	(9.1)	14.5	(31.7)
Business and asset actions	185.6	0	185.6	0
Net Income Attributable to Air Products	(439.8)	(530.5)	(1,012)	(1,090.9)
Reclassification out of Accumulated Other Comprehensive Income | (Gain) Loss on Cash Flow Hedges, net of tax
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Sales	0.1	0.2	0.1	0.5
Cost of sales	1.8	0.3	2.8	0.2
Interest expense	0.7	0.9	1.7	1.8
Other non-operating income (expense), net	3.2	24.6	(67.5)	42.2
Net Income Attributable to Air Products	5.8	26	(62.9)	44.7
Reclassification out of Accumulated Other Comprehensive Income | Foreign currency translation adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Business and asset actions	(0.3)	0	(0.3)	0
Reclassification out of Accumulated Other Comprehensive Income | Pension and Postretirement Benefits, net of tax
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Income Attributable to Air Products	$ 14.4	$ 15.9	$ 26.3	$ 31.9

Earnings Per Share (Schedule of

Earnings Per Share (Schedule of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Net income attributable to Air Products	$ 439.8	$ 530.5	$ 1,012	$ 1,090.9
Weighted average common shares — Basic	222.3	222	222.3	222
Employee stock option and other award plans	0.4	0.5	0.4	0.5
Weighted average common shares — Diluted	222.7	222.5	222.7	222.5
Basic earnings per share attributable to Air Products	$ 1.98	$ 2.39	$ 4.55	$ 4.91
Basic earnings per share attributable to Air Products	$ 1.97	$ 2.38	$ 4.54	$ 4.90

Earnings Per Share (Narrative)

Earnings Per Share (Narrative) (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Antidilutive share-based awards excluded from computation of diluted earnings per share (in shares)	0	0	0	0

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Effective tax rate (percent)	21.20%	18.60%	19.90%	17.80%
Business and asset actions	$ 185.6	$ 0	$ 185.6	$ 0
Business and asset actions attributable to Air Products after tax	153.7
Valuation allowance against deferred tax assets	31.7		31.7
Tax expense (benefit) from tax election	$ (15.9)
Income tax payments, net of refunds			$ 327	$ 236.9

Supplemental Information (Relat

Supplemental Information (Related Party Transactions) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Sep. 30, 2022
Related Party Transaction [Line Items]
Sales to and other income from related parties	$ 105	$ 60	$ 185	$ 125
Trade receivables, net, from related parties	$ 170		$ 170		$ 55

Supplemental Information (Chang

Supplemental Information (Changes in Estimates) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Change in Accounting Estimate [Line Items]
Operating Income (Loss)	$ 459.8	$ 561.9	$ 1,111.8	$ 1,084.9
Contracts accounted for under percentage of completion
Change in Accounting Estimate [Line Items]
Operating Income (Loss)	$ (35)		$ (60)

Supplemental Information (Lesse

Supplemental Information (Lessee Accounting) (Details) $ in Millions	6 Months Ended
	Mar. 31, 2023 USD ($)
Disclosure Text Block Supplement [Abstract]
Noncash right-of-use asset additions	$ 79

Business Segment Information (S

Business Segment Information (Schedule of Segment Reporting Information) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Sep. 30, 2022
Segment Reporting Information [Line Items]
Sales	$ 3,200.1	$ 2,945.1	$ 6,374.8	$ 5,939.3
Operating Income (Loss)	459.8	561.9	1,111.8	1,084.9
Depreciation and amortization			661.1	668.2
Equity affiliates' income	165.9	120.8	275.9	268.6
Total assets	29,435.4		29,435.4		$ 27,192.6
Segment Total
Segment Reporting Information [Line Items]
Sales	3,200.1	2,945.1	6,374.8	5,939.3
Operating Income (Loss)	645.4	561.9	1,297.4	1,084.9
Depreciation and amortization	339.6	335.9	661.1	668.2
Equity affiliates' income	165.9	120.8	275.9	268.6
Total assets	29,435.4		29,435.4		27,192.6
Americas | Segment Total
Segment Reporting Information [Line Items]
Sales	1,373.1	1,186.6	2,757.3	2,410.7
Operating Income (Loss)	324.2	275.5	667.2	542.7
Depreciation and amortization	161.7	153.7	317.7	309
Equity affiliates' income	28.1	20.1	44.5	54.3
Total assets	8,859		8,859		8,237.7
Asia | Segment Total
Segment Reporting Information [Line Items]
Sales	813.9	751.2	1,591.7	1,531.6
Operating Income (Loss)	233	203.6	468.9	424.7
Depreciation and amortization	110	111.8	211.9	222.6
Equity affiliates' income	7.3	6.2	14.7	12.8
Total assets	7,422.7		7,422.7		6,968.7
Europe | Segment Total
Segment Reporting Information [Line Items]
Sales	752.9	738.6	1,544.8	1,482.8
Operating Income (Loss)	173.2	116.4	319	215.6
Depreciation and amortization	48.3	50.3	92.6	100.1
Equity affiliates' income	29.5	23.3	47.2	37.2
Total assets	3,914.4		3,914.4		3,645.1
Middle East and India | Segment Total
Segment Reporting Information [Line Items]
Sales	44.8	28.9	86.2	52.6
Operating Income (Loss)	1.3	4.8	8	9.6
Depreciation and amortization	6.6	6.9	13.2	13
Equity affiliates' income	98.9	71.1	163	163.4
Total assets	4,451.8		4,451.8		2,980.7
Corporate and other | Segment Total
Segment Reporting Information [Line Items]
Sales	215.4	239.8	394.8	461.6
Operating Income (Loss)	(86.3)	(38.4)	(165.7)	(107.7)
Depreciation and amortization	13	13.2	25.7	23.5
Equity affiliates' income	2.1	$ 0.1	6.5	$ 0.9
Total assets	$ 4,787.5		$ 4,787.5		$ 5,360.4

Business Segment Information (R

Business Segment Information (Reconciliation of Operating Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ 459.8	$ 561.9	$ 1,111.8	$ 1,084.9
Business and asset actions	(185.6)	0	(185.6)	0
Segment Reconciling Items
Segment Reporting Information [Line Items]
Business and asset actions	(185.6)	0	(185.6)	0
Segment Total
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ 645.4	$ 561.9	$ 1,297.4	$ 1,084.9