Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Beginning balance	$ 1,444.1	$ 1,354.9
Other	0.2	(0.9)
Ending balance	1,958.9	1,444.1
Water Pik Inc
Goodwill [Line Items]
Goodwill acquired during the period	424.3
Ending balance	424.3
Agro Bio Sciences Inc
Goodwill [Line Items]
Goodwill acquired during the period	53.4
Ending balance	53.4
Spencer Forrest, Inc
Goodwill [Line Items]
Beginning balance	52.3
Goodwill acquired during the period		52.3
Ending balance		52.3
VIVISCAL
Goodwill [Line Items]
Goodwill acquired during the period	36.9
Ending balance	36.9
Anusol Acquisition
Goodwill [Line Items]
Beginning balance	37.8
Goodwill acquired during the period		37.8
Ending balance		37.8
Consumer Domestic
Goodwill [Line Items]
Beginning balance	1,280.1	1,242.2
Other	0.0	(0.8)
Ending balance	1,632.1	1,280.1
Consumer Domestic | Water Pik Inc
Goodwill [Line Items]
Goodwill acquired during the period	322.5
Consumer Domestic | Agro Bio Sciences Inc
Goodwill [Line Items]
Goodwill acquired during the period	0.0
Consumer Domestic | Spencer Forrest, Inc
Goodwill [Line Items]
Goodwill acquired during the period		38.7
Consumer Domestic | VIVISCAL
Goodwill [Line Items]
Goodwill acquired during the period	29.5
Consumer Domestic | Anusol Acquisition
Goodwill [Line Items]
Goodwill acquired during the period		0.0
Consumer International
Goodwill [Line Items]
Beginning balance	113.9	62.6
Other	0.2	(0.1)
Ending balance	223.3	113.9
Consumer International | Water Pik Inc
Goodwill [Line Items]
Goodwill acquired during the period	101.8
Consumer International | Agro Bio Sciences Inc
Goodwill [Line Items]
Goodwill acquired during the period	0.0
Consumer International | Spencer Forrest, Inc
Goodwill [Line Items]
Goodwill acquired during the period		13.6
Consumer International | VIVISCAL
Goodwill [Line Items]
Goodwill acquired during the period	7.4
Consumer International | Anusol Acquisition
Goodwill [Line Items]
Goodwill acquired during the period		37.8
Specialty Products
Goodwill [Line Items]
Beginning balance	50.1	50.1
Other	0.0	0.0
Ending balance	103.5	50.1
Specialty Products | Water Pik Inc
Goodwill [Line Items]
Goodwill acquired during the period	0.0
Specialty Products | Agro Bio Sciences Inc
Goodwill [Line Items]
Goodwill acquired during the period	53.4
Specialty Products | Spencer Forrest, Inc
Goodwill [Line Items]
Goodwill acquired during the period		0.0
Specialty Products | VIVISCAL
Goodwill [Line Items]
Goodwill acquired during the period	$ 0.0
Specialty Products | Anusol Acquisition
Goodwill [Line Items]
Goodwill acquired during the period		$ 0.0