Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Operating Activities
Net Income (Loss)	$ (354.4)	$ 3,862.4	$ 2,338.6
Less: Net income attributable to noncontrolling interests of continuing operations	40.1	34.2	38.4
Net income (loss) attributable to Air Products	(394.5)	3,828.2	2,300.2
Net (income) loss from discontinued operations	8.0	13.9	(7.4)
Net income (loss) from continuing operations attributable to Air Products	(386.5)	3,842.1	2,292.8
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation and amortization	1,564.2	1,451.1	1,358.3
Deferred income taxes	(554.8)	(69.3)	(24.7)
Tax reform repatriation	(34.9)	0.0	0.0
Business and asset actions	3,747.0	57.0	244.6
Gain on sale of business	(67.3)	(1,575.6)	0.0
Undistributed earnings of equity method investments	(269.8)	(206.0)	(261.2)
Gain on sale of assets and investments	(66.4)	(31.4)	(15.8)
Share-based compensation	76.4	61.8	59.9
Noncurrent lease receivables	52.5	116.2	79.6
Other adjustments	48.0	183.8	(103.0)
Working capital changes that provided (used) cash, excluding effects of acquisitions:
Trade receivables	(36.3)	(111.0)	130.7
Inventories	(35.8)	(137.8)	(129.4)
Other receivables	7.1	34.4	(93.8)
Payables and accrued liabilities	(224.0)	(338.7)	(213.3)
Other working capital	(562.6)	370.1	(119.0)
Cash Provided by Operating Activities	3,256.8	3,646.7	3,205.7
Investing Activities
Additions to plant and equipment, including long-term deposits	(7,022.6)	(6,796.7)	(4,626.4)
Acquisitions, less cash acquired	(59.9)	0.0	0.0
Investment in and advances to unconsolidated affiliates	(390.4)	0.0	(912.0)
Investment in financing receivables	(61.9)	(403.0)	(665.1)
Proceeds from sale of assets and investments	245.8	1,878.8	25.4
Purchases of short-term investments	(117.6)	(141.4)	(640.1)
Proceeds from short-term investments	122.5	470.7	897.0
Proceeds from other investing activities	115.4	72.4	4.8
Cash Used for Investing Activities	(7,168.7)	(4,919.2)	(5,916.4)
Financing Activities
Long-term debt proceeds	4,386.7	4,678.3	3,516.2
Payments on long-term debt	(429.9)	(486.2)	(615.4)
Net (decrease) increase in commercial paper and short-term borrowings	(74.7)	(289.9)	268.2
Dividends paid to shareholders	(1,584.1)	(1,564.9)	(1,496.6)
Proceeds from stock option exercises	1.1	7.9	24.0
Investments by noncontrolling interests	594.6	428.5	234.9
Distributions to noncontrolling interests	(7.2)	(25.8)	(115.9)
Other financing activities	(91.3)	(132.5)	(205.8)
Cash Provided by Financing Activities	2,795.2	2,615.4	1,609.6
Discontinued Operations
Cash provided by operating activities	0.0	0.0	0.6
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	0.0	0.6
Effect of Exchange Rate Changes on Cash	(7.0)	19.8	6.5
(Decrease) Increase in cash and cash items	(1,123.7)	1,362.7	(1,094.0)
Cash and cash items – Beginning of year	2,979.7	1,617.0	2,711.0
Cash and Cash Items – End of Period	$ 1,856.0	$ 2,979.7	$ 1,617.0