Carrying Amount of Goodwill (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020 USD ($)
Goodwill [Line Items]
Beginning balance	$ 2,079.5
Ending balance	2,078.2
PERL WEISS Toothpaste
Goodwill [Line Items]
PERL WEISS divestiture	(1.3)
Consumer Domestic
Goodwill [Line Items]
Beginning balance	1,707.9
Ending balance	1,707.9
Consumer Domestic | PERL WEISS Toothpaste
Goodwill [Line Items]
PERL WEISS divestiture	(0.0)
Consumer International
Goodwill [Line Items]
Beginning balance	235.6
Ending balance	234.3
Consumer International | PERL WEISS Toothpaste
Goodwill [Line Items]
PERL WEISS divestiture	(1.3)
Specialty Products
Goodwill [Line Items]
Beginning balance	136.0
Ending balance	136.0
Specialty Products | PERL WEISS Toothpaste
Goodwill [Line Items]
PERL WEISS divestiture	$ (0.0)