Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Operating Activities
Net Income	$ 1,931.1	$ 1,809.4	$ 1,532.9
Less: Net income attributable to noncontrolling interests of continuing operations	44.4	49.4	35.1
Net Income Attributable to Air Products	1,886.7	1,760.0	1,497.8
Loss (Income) from discontinued operations	14.3	0.0	(42.2)
Income from continuing operations attributable to Air Products	1,901.0	1,760.0	1,455.6
Adjustments to reconcile income to cash provided by operating activities:
Depreciation and amortization	1,185.0	1,082.8	970.7
Deferred income taxes	165.0	57.6	(55.4)
Tax reform repatriation	0.0	49.4	240.6
Facility closure	0.0	29.0	0.0
Undistributed (earnings) losses of unconsolidated affiliates	(161.9)	(75.8)	(59.8)
Gain on sale of assets and investments	(45.8)	(24.2)	(6.9)
Share-based compensation	53.5	41.2	38.8
Noncurrent lease receivables	91.6	94.6	97.4
Other adjustments	116.4	(19.4)	131.6
Working capital changes that provided (used) cash, excluding effects of acquisitions:
Trade receivables	43.2	(69.0)	(42.8)
Inventories	(5.2)	(3.0)	(64.2)
Other receivables	84.4	79.8	128.3
Payables and accrued liabilities	(31.9)	(41.8)	(277.7)
Other working capital	(130.6)	8.7	(9.0)
Cash Provided by Operating Activities	3,264.7	2,969.9	2,547.2
Investing Activities
Additions to plant and equipment, including long-term deposits	(2,509.0)	(1,989.7)	(1,568.4)
Acquisitions, less cash acquired	(183.3)	(123.2)	(345.4)
Investment in and advances to unconsolidated affiliates	(24.4)	(15.7)	0.0
Proceeds from sale of assets and investments	80.3	11.1	48.8
Purchases of investments	(2,865.5)	(172.1)	(530.3)
Proceeds from investments	1,938.0	190.5	748.2
Other investing activities	3.9	(14.3)	5.5
Cash Used for Investing Activities	(3,560.0)	(2,113.4)	(1,641.6)
Financing Activities
Long-term debt proceeds	4,895.8	0.0	0.5
Payments on long-term debt	(406.6)	(428.6)	(418.7)
Net increase (decrease) in commercial paper and short-term borrowings	(54.9)	3.9	(78.5)
Dividends paid to shareholders	(1,103.6)	(994.0)	(897.8)
Proceeds from stock option exercises	34.1	68.1	76.2
Other financing activities	(80.1)	(19.9)	(41.5)
Cash Provided by (Used for) Financing Activities	3,284.7	(1,370.5)	(1,359.8)
Discontinued Operations
Cash used for operating activities	0.0	0.0	(12.8)
Cash provided by investing activities	0.0	0.0	18.6
Cash provided by financing activities	0.0	0.0	0.0
Cash Provided by Discontinued Operations	0.0	0.0	5.8
Effect of Exchange Rate Changes on Cash	14.9	(28.6)	(33.9)
Increase (Decrease) in cash and cash items	3,004.3	(542.6)	(482.3)
Cash and Cash items – Beginning of Year	2,248.7	2,791.3	3,273.6
Cash and Cash Items – End of Period	$ 5,253.0	$ 2,248.7	$ 2,791.3