Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Cash Flow from Operating Activities
Net earnings	$ 98.6	$ 114.7	$ 99.5
Depreciation, Depletion and Amortization	88.0	91.4	89.9
Share-based compensation expense	26.5	27.5	23.8
Deferred income taxes	(9.6)	(4.5)	(13.7)
Deferred compensation payments	(2.1)	(4.9)	(7.3)
Loss on sale of assets	0.7	2.5	1.5
Defined benefit settlement loss	0.0	(7.9)	0.0
Other, net	(18.7)	(23.5)	(9.6)
Accounts receivable, net	(7.3)	31.0	(6.6)
Inventories	19.7	(32.4)	(111.3)
Other current assets	4.7	20.8	(11.5)
Accounts payable	17.0	(30.2)	29.3
Other current liabilities	13.5	15.8	18.0
Net cash provided by operating activities	231.0	216.1	102.0
Cash flow from Investing Activities
Capital expenditures	(56.5)	(49.5)	(56.4)
Acquisitions, net of cash acquired	0.0	0.0	(309.4)
Proceeds from sale of Infant Care business	0.0	0.0	5.0
Collection of deferred purchase price from accounts receivable sold	0.7	2.7	6.9
Other, net	(6.6)	(3.7)	(1.5)
Net cash used by investing activities	(62.4)	(50.5)	(355.4)
Cash flow from Financing Activities
Cash proceeds from debt with original maturities greater than 90 days	813.0	841.0	707.0
Cash payments for debt with original maturities greater than 90 days	(901.0)	(874.0)	(552.0)
Net proceeds from (payments for) debt with original maturities of 90 days or less	4.2	0.0	(3.9)
Repurchase of shares	(58.5)	(75.2)	(125.3)
Dividends paid to common shareholders	(30.7)	(31.5)	(32.6)
Employee shares withheld for taxes	(7.3)	(9.0)	(10.7)
Proceeds from (Repayments of) Accounts Receivable Securitization	5.2	2.3	(0.8)
Other, net	(4.3)	(0.1)	0.7
Net cash used by financing activities	(179.4)	(146.5)	(17.6)
Effect of exchange rate changes on cash	3.5	8.6	(19.5)
Net (decrease) increase in cash and cash equivalents	(7.3)	27.7	(290.5)
Cash and cash equivalents, beginning	216.4	188.7	479.2
Cash and cash equivalents, ending	209.1	216.4	188.7
Supplemental Cash Flow Information [Abstract]
Cash paid for interest, net	62.8	74.3	68.4
Cash paid for income taxes, net	$ 33.5	$ 45.8	$ 23.8