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	[1]	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)		$ (1,984.1)	$ 1,637.2
Stockholders' Equity [Roll Forward]
Net income	649.8	617.4			617.4				32.4
Other comprehensive income	(455.4)	(558.5)				(558.5)			103.1
Dividends on common stock	(393.8)	(393.8)			(393.8)
Distributions to noncontrolling interests	(1.4)								(1.4)
Share-based compensation	14.3	14.3		14.3
Issuance of treasury shares for award plans	(21.8)	(21.8)		(6.8)				(15.0)
Investments by noncontrolling interests	281.0								281.0
Purchase of noncontrolling interests	(5.9)								(5.9)
Other equity transactions	(1.8)	(1.8)		0.2	(2.0)
Ending balance at Dec. 31, 2024	18,738.7	16,692.3	249.4	1,260.9	19,767.3	(2,586.2)		(1,999.1)	2,046.4
Beginning balance at Sep. 30, 2025	17,349.8	15,024.9	249.4	1,306.5	17,558.6	(2,087.8)		(2,001.8)	2,324.9
Stockholders' Equity [Roll Forward]
Net income	691.4	678.2			678.2				13.2
Other comprehensive income	134.9	110.7				110.7			24.2
Dividends on common stock	(398.6)	(398.6)			(398.6)
Distributions to noncontrolling interests	(0.4)								(0.4)
Share-based compensation	10.5	10.5		10.5
Issuance of treasury shares for award plans	(10.9)	(10.9)		(8.1)				(2.8)
Investments by noncontrolling interests	60.6								60.6
Purchase of noncontrolling interests	0.0	(3.3)		(3.3)					3.3
Other equity transactions	(0.2)	(0.2)			(0.2)
Ending balance at Dec. 31, 2025	$ 17,837.1	$ 15,411.3	$ 249.4	$ 1,305.6	$ 17,838.0	$ (1,977.1)		$ (2,004.6)	$ 2,425.8

[1] (A)Accumulated other comprehensive loss.