Consolidated Statements of Equity (Unaudited) - USD ($) $ in Millions	Total	Air Products Share-holders' Equity	Common Stock	Capital in Excess of Par Value	Retained Earnings	AOCL		Treasury Stock	Non-controlling Interests
Beginning balance at Sep. 30, 2024	$ 18,673.7	$ 17,036.5	$ 249.4	$ 1,253.2	$ 19,545.7	$ (2,027.7)	[1]	$ (1,984.1)	$ 1,637.2
Stockholders' Equity [Roll Forward]
Net income	(1,087.7)	(1,113.2)			(1,113.2)				25.5
Other comprehensive income	(391.6)	(450.0)				(450.0)	[1]		58.4
Dividends on common stock	(792.1)	(792.1)			(792.1)
Distributions to noncontrolling interests	(1.4)								(1.4)
Share-based compensation	51.0	51.0		51.0
Issuance of treasury shares for award plans	(25.7)	(25.7)		(12.8)				(12.9)
Investments by noncontrolling interests	362.4								362.4
Purchase of noncontrolling interests	(5.9)								(5.9)
Other equity transactions	(3.1)	(3.1)		0.0	(3.1)
Ending balance at Mar. 31, 2025	16,779.6	14,703.4	249.4	1,291.4	17,637.3	(2,477.7)	[1],[2]	(1,997.0)	2,076.2
Beginning balance at Dec. 31, 2024	18,738.7	16,692.3	249.4	1,260.9	19,767.3	(2,586.2)	[2]	(1,999.1)	2,046.4
Stockholders' Equity [Roll Forward]
Net income	(1,737.5)	(1,730.6)			(1,730.6)				(6.9)
Other comprehensive income	63.8	108.5				108.5	[2]		(44.7)
Dividends on common stock	(398.3)	(398.3)			(398.3)
Share-based compensation	36.7	36.7		36.7
Issuance of treasury shares for award plans	(3.9)	(3.9)		(6.0)				2.1
Investments by noncontrolling interests	81.4								81.4
Other equity transactions	(1.3)	(1.3)		(0.2)	(1.1)				0.0
Ending balance at Mar. 31, 2025	16,779.6	14,703.4	249.4	1,291.4	17,637.3	(2,477.7)	[1],[2]	(1,997.0)	2,076.2
Beginning balance at Sep. 30, 2025	17,349.8	15,024.9	249.4	1,306.5	17,558.6	(2,087.8)	[1]	(2,001.8)	2,324.9
Stockholders' Equity [Roll Forward]
Net income	1,416.2	1,388.6			1,388.6				27.6
Other comprehensive income	54.7	30.3				30.3	[1]		24.4
Dividends on common stock	(801.7)	(801.7)			(801.7)
Distributions to noncontrolling interests	(0.4)								(0.4)
Share-based compensation	24.2	24.2		24.2
Issuance of treasury shares for award plans	(11.8)	(11.8)		(10.2)				(1.6)
Investments by noncontrolling interests	120.1								120.1
Purchase of noncontrolling interests	0.0	(3.3)		(3.3)					3.3
Other equity transactions	(1.3)	(1.3)			(1.3)
Ending balance at Mar. 31, 2026	18,149.8	15,649.9	249.4	1,317.2	18,144.2	(2,057.5)	[1],[2]	(2,003.4)	2,499.9
Beginning balance at Dec. 31, 2025	17,837.1	15,411.3	249.4	1,305.6	17,838.0	(1,977.1)	[2]	(2,004.6)	2,425.8
Stockholders' Equity [Roll Forward]
Net income	724.8	710.4			710.4				14.4
Other comprehensive income	(80.2)	(80.4)				(80.4)	[2]		0.2
Dividends on common stock	(403.1)	(403.1)			(403.1)
Share-based compensation	13.7	13.7		13.7
Issuance of treasury shares for award plans	(0.9)	(0.9)		(2.1)				1.2
Investments by noncontrolling interests	59.5								59.5
Other equity transactions	(1.1)	(1.1)		0.0	(1.1)
Ending balance at Mar. 31, 2026	$ 18,149.8	$ 15,649.9	$ 249.4	$ 1,317.2	$ 18,144.2	$ (2,057.5)	[1],[2]	$ (2,003.4)	$ 2,499.9

[1] (A)Accumulated other comprehensive loss.

[2] Accumulated other comprehensive loss