Condensed Consolidated Statements of Earnings and Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net sales	$ 454.0	$ 457.1
Cost of products sold	260.9	263.6
Gross profit	193.1	193.5
Selling, general and administrative expense	95.0	87.3
Advertising and sales promotion expense	41.1	51.6
Research and development expense	13.8	12.6
Restructuring charges	6.1	17.1
Gain on sale of Infant and Pet Care business	(5.2)	0.0
Interest expense associated with debt	14.3	16.0
Other (income) expense, net	(1.6)	1.3
Earnings before income taxes	29.6	7.6
Income tax provision	7.2	8.0
Net earnings (loss)	$ 22.4	$ (0.4)
Basic net earnings (loss) per share	$ 0.41	$ (0.01)
Diluted net earnings (loss) per share	$ 0.41	$ (0.01)
Condensed Consolidated Statements of Comprehensive Income
Net earnings (loss)	$ 22.4	$ (0.4)
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	21.5	(10.8)
Pension and postretirement activity, net of tax	(1.5)	0.0
Deferred (loss) gain on hedging activity, net of tax	(1.3)	(1.3)
Total other comprehensive income (loss), net of tax	18.7	(12.1)
Total comprehensive income (loss)	$ 41.1	$ (12.5)