Condensed Consolidated Statements of Earnings and Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Net sales	$ 599.4	$ 598.4	$ 1,088.3	$ 1,067.5
Cost of products sold	341.3	356.1	632.5	635.6
Gross profit	258.1	242.3	455.8	431.9
Selling, general and administrative expense	107.5	105.2	210.8	200.9
Advertising and sales promotion expense	63.1	62.9	111.3	108.8
Research and development expense	14.2	14.4	27.5	27.8
Restructuring charges	3.2	3.0	10.0	5.7
Operating income	70.1	56.8	96.2	88.7
Interest expense associated with debt	20.4	20.7	40.2	40.6
Other expense, net	2.7	9.5	3.0	4.5
Earnings before income taxes	47.0	26.6	53.0	43.6
Income tax provision	11.0	7.2	12.2	11.8
Net earnings	$ 36.0	$ 19.4	$ 40.8	$ 31.8
Basic net earnings per share	$ 0.72	$ 0.38	$ 0.82	$ 0.62
Diluted net earnings per share	$ 0.72	$ 0.37	$ 0.81	$ 0.61
Condensed Consolidated Statements of Comprehensive Income
Net earnings	$ 36.0	$ 19.4	$ 40.8	$ 31.8
Other comprehensive (loss) income, net of tax
Foreign currency translation adjustments	(16.0)	12.1	11.0	60.1
Pension and postretirement activity, net of tax	(0.5)	4.5	(0.6)	4.3
Deferred gain (loss) on hedging activity, net of tax	2.7	0.2	(0.7)	(8.0)
Total other comprehensive (loss) income, net of tax	(13.8)	16.8	9.7	56.4
Total comprehensive income	$ 22.2	$ 36.2	$ 50.5	$ 88.2