Condensed Consolidated Statements of Earnings and Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Net sales	$ 478.4	$ 488.9
Cost of products sold	286.8	291.2
Gross profit	191.6	197.7
Selling, general and administrative expense	102.9	103.3
Advertising and sales promotion expense	50.3	48.2
Research and development expense	13.9	13.3
Restructuring charges	4.2	6.8
Operating income	20.3	26.1
Interest expense associated with debt	18.8	19.8
Other expense, net	3.2	0.3
(Loss) earnings before income taxes	(1.7)	6.0
Income tax provision	0.4	1.2
Net (loss) earnings	(2.1)	4.8
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(48.3)	27.0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	0.4	(0.1)
Deferred gain (loss) on hedging activity, net of tax	$ 5.0	$ (3.4)
Basic net (loss) earnings per share	$ (0.04)	$ 0.10
Diluted net (loss) earnings per share	$ (0.04)	$ 0.09
Condensed Consolidated Statements of Comprehensive Income
Net (loss) earnings	$ (2.1)	$ 4.8
Other comprehensive (loss) income, net of tax
Total other comprehensive (loss) income, net of tax	(42.9)	23.5
Total comprehensive (loss) income	$ (45.0)	$ 28.3
Basic weighted-average shares outstanding (in shares)	48.7	50.1
Weighted Average Number of Shares Outstanding, Diluted	48.7	50.5