Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Cash Flow from Operating Activities
Net earnings	$ 98.6	$ 117.0	$ 67.6
Depreciation and amortization	89.9	87.1	88.8
Share-based compensation expense	23.8	27.3	19.2
Deferred income taxes	(13.7)	9.6	(2.9)
Deferred compensation payments	(7.3)	(9.3)	(8.7)
Loss on sale of assets	1.5	0.9	2.3
Gain on sale of Infant and Pet Care business	0.0	0.0	4.1
Cost of early retirement of long-term debt	0.0	(26.1)	(26.2)
Other, net	(9.8)	(2.8)	1.0
Accounts receivable, net	(6.6)	3.7	66.3
Inventories	(111.3)	(28.8)	37.1
Other current assets	(11.5)	(13.8)	3.0
Accounts payable	30.4	25.4	(42.9)
Other current liabilities	18.0	(13.4)	(20.3)
Net cash from operating activities	102.0	229.0	232.6
Cash flow from Investing Activities
Capital expenditures	(56.4)	(56.8)	(47.7)
Acquisitions, net of cash acquired	(309.4)	(0.3)	(233.6)
Proceeds from sale of Infant Care business	5.0	7.5	95.8
Investment in equity securities	0.0	0.0	(13.8)
Collection of deferred purchase price from accounts receivable sold	6.9	2.6	4.3
Other, net	(1.5)	(1.7)	(1.4)
Net cash used by investing activities	(355.4)	(48.7)	(196.4)
Cash flow from Financing Activities
Cash proceeds from debt with original maturities greater than 90 days	707.0	0.0	50.0
Cash payments on debt with original maturities greater than 90 days	(552.0)	0.0	(167.0)
Cash proceeds from the issuance of Senior Notes due 2029	0.0	500.0	0.0
Cash payments on Senior Notes due 2022	0.0	500.0	0.0
Cash proceeds from the issuance of Senior Notes due 2028	0.0	0.0	750.0
Cash payments on Senior Notes due 2021	0.0	0.0	(600.0)
Net (decrease) increase in debt with original maturities of 90 days or less	(3.9)	4.2	3.0
Cost of early retirement of long-term debt	0.0	(26.1)	(26.2)
Debt issuance costs for Senior Notes due 2029	0.0	(6.5)	0.0
Debt issuance costs for Senior Notes due 2028	0.0	0.0	(11.7)
Debt issuance costs for the Revolving Credit Facility	0.0	0.0	(3.6)
Repurchase of shares	(125.3)	(9.2)	0.0
Dividends paid	(32.6)	(25.6)	0.0
Employee shares withheld for taxes	(10.7)	(4.2)	(2.0)
Net financing (outflow) inflow from the Accounts Receivable Facility	(0.8)	2.4	(11.2)
Other, net	0.7	(0.4)	0.0
Net cash used by financing activities	(17.6)	(65.4)	(18.7)
Effect of exchange rate changes on cash	(19.5)	(0.4)	5.6
Net (decrease) increase in cash and cash equivalents	(290.5)	114.5	23.1
Cash and cash equivalents, beginning	479.2	364.7	341.6
Cash and cash equivalents, ending	188.7	479.2	364.7
Supplemental Cash Flow Information [Abstract]
Cash paid for interest, net	68.4	61.0	56.1
Cash paid for income taxes, net	$ 23.8	$ 25.4	$ 24.6