Consolidated Income Statements (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Sales	$ 2,931.5	$ 2,997.4
Cost of sales	2,016.5	2,067.2
Selling and administrative expense	242.4	238.4
Research and development expense	22.0	25.7
Shareholder activism costs	29.9	0.0
Other income (expense), net	22.9	0.8
Operating Income	643.6	666.9
Equity affiliates' income	150.6	158.4
Interest expense	42.6	53.5
Other non-operating income (expense), net	38.9	(14.8)
Income Before Taxes	790.5	757.0
Income tax provision	140.7	135.4
Net Income	649.8	621.6
Net Income Attributable to Noncontrolling Interests	32.4	12.3
Net Income Attributable to Air Products	$ 617.4	$ 609.3
Per Share Data (U.S. Dollars per share)
Basic earnings per share attributable to Air Products (in dollars per share)	$ 2.77	$ 2.74
Diluted earnings per share attributable to Air Products (in dollars per share)	$ 2.77	$ 2.73
Weighted Average Common Shares (in millions)
Basic (in shares)	222.7	222.5
Diluted (in shares)	222.9	222.8