Consolidated Income Statements (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Sales	$ 2,997.4	$ 3,174.7
Cost of sales	2,067.2	2,272.3
Selling and administrative expense	238.4	234.4
Research and development expense	25.7	24.4
Other income (expense), net	0.8	8.4
Operating Income	666.9	652.0
Equity affiliates' income	158.4	110.0
Interest expense	53.5	41.2
Other non-operating income (expense), net	(14.8)	(0.6)
Income Before Taxes	757.0	720.2
Income tax provision	135.4	136.4
Net Income	621.6	583.8
Less: Net income attributable to noncontrolling interests	12.3	11.6
Net Income Attributable to Air Products	$ 609.3	$ 572.2
Per Share Data
Basic earnings per share attributable to Air Products (in dollars per share)	$ 2.74	$ 2.58
Diluted earnings per share attributable to Air Products (in dollars per share)	$ 2.73	$ 2.57
Weighted Average Common Shares (in millions)
Basic (in shares)	222.5	222.2
Diluted (in shares)	222.8	222.6