Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating Activities
Net Income	$ 1,033.7	$ 1,086.4
Less: Net income (loss) attributable to noncontrolling interests	21.7	(4.5)
Net income attributable to Air Products	1,012.0	1,090.9
Adjustments to reconcile income to cash provided by operating activities:
Depreciation and amortization	661.1	668.2
Deferred income taxes	29.0	51.3
Business and asset actions	185.6	0.0
Undistributed earnings of equity method investments	(78.1)	(200.8)
Gain on sale of assets and investments	(3.9)	(11.8)
Share-based compensation	31.2	26.5
Noncurrent lease receivables	39.5	43.9
Other adjustments	70.9	(101.0)
Working capital changes that provided (used) cash, excluding effects of acquisitions:
Trade receivables	162.0	(203.1)
Inventories	(112.3)	(57.3)
Other receivables	(63.0)	13.8
Payables and accrued liabilities	(451.3)	123.1
Other working capital	(124.7)	(138.7)
Cash Provided by Operating Activities	1,358.0	1,305.0
Investing Activities
Additions to plant and equipment, including long-term deposits	(1,841.1)	(1,433.6)
Acquisitions, less cash acquired	0.0	(65.1)
Investment in and advances to unconsolidated affiliates	(912.0)	(1,650.9)
Proceeds from sale of assets and investments	7.2	25.3
Purchases of investments	(290.5)	(909.4)
Proceeds from investments	611.6	1,391.4
Other investing activities	(51.2)	6.5
Cash Used for Investing Activities	(2,476.0)	(2,635.8)
Financing Activities
Long-term debt proceeds	1,891.6	87.5
Payments on long-term debt	(596.0)	(400.0)
Net (decrease) increase in commercial paper and short-term borrowings	(16.3)	210.9
Dividends paid to shareholders	(719.2)	(664.7)
Proceeds from stock option exercises	17.1	14.4
Investments by noncontrolling interests	72.8	3.6
Other financing activities	(46.6)	(37.3)
Cash Provided by (Used for) Financing Activities	603.4	(785.6)
Effect of Exchange Rate Changes on Cash	46.0	(3.8)
Decrease in cash and cash items	(468.6)	(2,120.2)
Cash and Cash items – Beginning of year	2,711.0	4,468.9
Cash and Cash Items – End of Period	$ 2,242.4	$ 2,348.7