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	227.0	485.6	459.8
Research and development expense	27.2	23.7	51.6	47.0
Business and asset actions	185.6	0.0	185.6	0.0
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	121.0	122.7	257.4	236.0
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	$ 1,012.0	$ 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	222.0	222.3	222.0
Diluted (in shares)	222.7	222.5	222.7	222.5