Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Operating Activities
Net Income	$ 3,862.4	$ 2,338.6	$ 2,266.5
Less: Net income attributable to noncontrolling interests of continuing operations	34.2	38.4	10.4
Net Income Attributable to Air Products	3,828.2	2,300.2	2,256.1
Net loss (income) from discontinued operations	13.9	(7.4)	(12.6)
Net income from continuing operations attributable to Air Products	3,842.1	2,292.8	2,243.5
Adjustments to reconcile income to cash provided by operating activities:
Depreciation and amortization	1,451.1	1,358.3	1,338.2
Deferred income taxes	(69.3)	(24.7)	32.3
Gain on sale of business	(1,575.6)	0.0	0.0
Business and asset actions	57.0	244.6	73.7
Undistributed earnings to equity method investments	(206.0)	(261.2)	(214.7)
Gain on sale of assets and investments	(31.4)	(15.8)	(24.1)
Share-based compensation	61.8	59.9	48.4
Noncurrent lease receivables	116.2	79.6	94.0
Other adjustments	183.8	(103.0)	(304.9)
Working capital changes that provided (used) cash, excluding effects of acquisitions:
Trade receivables	(111.0)	130.7	(475.2)
Inventories	(137.8)	(129.4)	(94.3)
Other receivables	34.4	(93.8)	(1.8)
Payables and accrued liabilities	(338.7)	(213.3)	532.5
Other working capital	370.1	(119.0)	(77.0)
Cash Provided by Operating Activities	3,646.7	3,205.7	3,170.6
Investing Activities
Additions to plant and equipment, including long-term deposits	(6,796.7)	(4,626.4)	(2,926.5)
Acquisitions, less cash acquired	0.0	0.0	(65.1)
Investment in and advances to unconsolidated affiliates	0.0	(912.0)	(1,658.4)
Investment in financing receivables	(403.0)	(665.1)	0.0
Proceeds from sale of assets and investments	1,878.8	25.4	46.2
Purchases of investments	(141.4)	(640.1)	(1,637.8)
Proceeds from investments	470.7	897.0	2,377.4
Other investing activities	72.4	4.8	7.0
Cash Used for Investing Activities	(4,919.2)	(5,916.4)	(3,857.2)
Financing Activities
Long-term debt proceeds	4,678.3	3,516.2	766.2
Payments on long-term debt	(486.2)	(615.4)	(400.0)
(Decrease) Increase in commercial paper and short-term borrowings	(289.9)	268.2	17.9
Dividends paid to shareholders	(1,564.9)	(1,496.6)	(1,383.3)
Proceeds from stock option exercises	7.9	24.0	19.3
Investments by noncontrolling interests	428.5	234.9	21.0
Distributions to noncontrolling interests	(25.8)	(115.9)	(4.8)
Other financing activities	(132.5)	(205.8)	(36.9)
Cash Provided by (Used for) Financing Activities	2,615.4	1,609.6	(1,000.6)
Discontinued Operations
Cash provided by operating activities	0.0	0.6	59.6
Cash provided by investing activities	0.0	0.0	0.0
Cash provided by financing activities	0.0	0.0	0.0
Cash Provided by Discontinued Operations	0.0	0.6	59.6
Effect of Exchange Rate Changes on Cash	19.8	6.5	(130.3)
Increase (Decrease) in cash and cash items	1,362.7	(1,094.0)	(1,757.9)
Cash and cash items – Beginning of year	1,617.0	2,711.0	4,468.9
Cash and Cash Items – End of Period	$ 2,979.7	$ 1,617.0	$ 2,711.0