Consolidated Comprehensive Income Statements (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net Income	$ 587.1	$ 532.3	$ 1,673.5	$ 1,496.1
Other Comprehensive Income (Loss), net of tax
Translation adjustments, net of tax	(576.1)	128.7	(594.3)	399.8
Net gain (loss) on derivatives, net of tax	(16.0)	8.5	(55.9)	17.1
Reclassification adjustments:
Derivatives, net of tax	11.4	(12.0)	56.1	22.7
Pension and postretirement benefits, net of tax	17.5	18.7	49.4	55.3
Total Other Comprehensive Income (Loss)	(563.2)	143.9	(544.7)	494.9
Comprehensive Income	23.9	676.2	1,128.8	1,991.0
Net Income (Loss) Attributable to Noncontrolling Interest	5.0	(1.3)	0.5	7.4
Other Comprehensive Income (Loss) Attributable to Noncontrolling Interest	(18.2)	1.4	(10.0)	36.7
Comprehensive Income Attributable to Air Products	$ 37.1	$ 676.1	$ 1,138.3	$ 1,946.9