Condensed Consolidated Statements of Earnings and Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Net sales	$ 598.4	$ 547.7	$ 1,067.5	$ 1,011.0
Cost of products sold	356.7	317.6	636.8	591.0
Gross profit	241.7	230.1	430.7	420.0
Selling, general and administrative expense	105.2	101.3	200.9	198.2
Advertising and sales promotion expense	62.9	69.9	108.8	116.1
Research and development expense	14.4	13.7	27.8	26.5
Restructuring charges	3.0	3.5	5.8	5.7
Operating income	56.2	41.7	87.5	73.5
Interest expense associated with debt	20.7	18.0	40.6	35.3
Other expense (income), net	9.5	(3.4)	4.5	(5.1)
Earnings before income taxes	26.0	27.1	42.4	43.3
Income tax provision	7.0	3.9	11.5	8.9
Net earnings	$ 19.0	$ 23.2	$ 30.9	34.4
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax				$ (15.9)
Basic net earnings per share	$ 0.37	$ 0.43	$ 0.60	$ 0.64
Diluted net earnings per share	$ 0.37	$ 0.43	$ 0.60	$ 0.63
Condensed Consolidated Statements of Comprehensive Income
Net earnings	$ 19.0	$ 23.2	$ 30.9	$ 34.4
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	12.1	(9.0)	60.1
Pension and postretirement activity, net of tax	4.5		4.3	0.1
Deferred gain (loss) on hedging activity, net of tax	0.2	1.0	(8.0)	1.4
Total other comprehensive income (loss), net of tax	16.8	(7.9)	56.4	(14.4)
Total comprehensive income	$ 35.8	$ 15.3	87.3	$ 20.0
Restructuring and related costs			$ 5.7