Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Beginning balance	$ 2,079.5	$ 1,992.9
Other		(1.3)
Ending balance	2,229.6	2,079.5
PERL WEISS Toothpaste
Goodwill [Line Items]
PERL WEISS divestiture	(1.3)
Flawless Acquisition
Goodwill [Line Items]
Goodwill acquired during the period		87.9
Zicam Acquisition
Goodwill [Line Items]
Goodwill acquired during the period	151.4
Consumer Domestic
Goodwill [Line Items]
Beginning balance	1,707.9	1,633.2
Other		0.0
Ending balance	1,859.3	1,707.9
Consumer Domestic | PERL WEISS Toothpaste
Goodwill [Line Items]
PERL WEISS divestiture	(0.0)
Consumer Domestic | Flawless Acquisition
Goodwill [Line Items]
Goodwill acquired during the period		74.7
Consumer Domestic | Zicam Acquisition
Goodwill [Line Items]
Goodwill acquired during the period	151.4
Consumer International
Goodwill [Line Items]
Beginning balance	235.6	223.7
Other		(1.3)
Ending balance	234.3	235.6
Consumer International | PERL WEISS Toothpaste
Goodwill [Line Items]
PERL WEISS divestiture	(1.3)
Consumer International | Flawless Acquisition
Goodwill [Line Items]
Goodwill acquired during the period		13.2
Consumer International | Zicam Acquisition
Goodwill [Line Items]
Goodwill acquired during the period	0.0
Specialty Products
Goodwill [Line Items]
Beginning balance	136.0	136.0
Other		0.0
Ending balance	136.0	136.0
Specialty Products | PERL WEISS Toothpaste
Goodwill [Line Items]
PERL WEISS divestiture	(0.0)
Specialty Products | Flawless Acquisition
Goodwill [Line Items]
Goodwill acquired during the period		$ 0.0
Specialty Products | Zicam Acquisition
Goodwill [Line Items]
Goodwill acquired during the period	$ 0.0