Selected Financial Information Relating To Company's Segments (Parenthetical) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Net Sales	[1]	$ 1,311.4	$ 1,241.0	$ 3,821.4	$ 3,600.5
Increase (decrease) in expenses				0.0	3.0
Selling General and Administrative Expenses
Segment Reporting Information [Line Items]
Increase (decrease) in expenses		(41.0)	51.0	(98.0)	(72.0)
Consumer International | Perl Weiss Toothpaste | Selling General and Administrative Expenses
Segment Reporting Information [Line Items]
Increase (decrease) in expenses					3.0
Flawless Acquisition | Consumer Domestic
Segment Reporting Information [Line Items]
Increase (decrease) in estimate of contingent consideration liability		34.8	43.3	83.2	61.2
Flawless Acquisition | Consumer International
Segment Reporting Information [Line Items]
Increase (decrease) in estimate of contingent consideration liability		6.2	7.7	14.8	10.8
Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales		$ 2.6	$ 3.3	$ 7.8	$ 9.1

[1] Intersegment sales from Consumer International to Consumer Domestic, which are not reflected in the table, were $2.6 and $3.3 for the three months ended September 30, 2021 and September 30, 2020, respectively, and were $7.8 and $9.1 for the nine months ended September 30, 2021 and September 30, 2020, respectively.