Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Gross goodwill		$ 933,000,000	$ 924,000,000
Accumulated Impairment Losses		(415,000,000)	(415,000,000)
Net goodwill	$ 518,000,000	518,000,000	509,000,000
Goodwill [Roll Forward]
Gross goodwill		933,000,000	924,000,000
Accumulated Impairment Losses		(415,000,000)	(415,000,000)
Net Goodwill, December 31, 2019	509,000,000
Acquisitions	12,000,000
Goodwill, other	(3,000,000)
Net Goodwill, March 31, 2020	518,000,000
Plumbing Products
Goodwill [Line Items]
Gross goodwill		575,000,000	566,000,000
Accumulated Impairment Losses		(340,000,000)	(340,000,000)
Net goodwill	226,000,000	235,000,000	226,000,000
Goodwill [Roll Forward]
Gross goodwill		575,000,000	566,000,000
Accumulated Impairment Losses		(340,000,000)	(340,000,000)
Net Goodwill, December 31, 2019	226,000,000
Acquisitions	12,000,000
Goodwill, other	(3,000,000)
Net Goodwill, March 31, 2020	235,000,000
Decorative Architectural Products
Goodwill [Line Items]
Gross goodwill		358,000,000	358,000,000
Accumulated Impairment Losses		(75,000,000)	(75,000,000)
Net goodwill	283,000,000	283,000,000	283,000,000
Goodwill [Roll Forward]
Gross goodwill		358,000,000	358,000,000
Accumulated Impairment Losses		$ (75,000,000)	$ (75,000,000)
Net Goodwill, December 31, 2019	283,000,000
Acquisitions	0
Goodwill, other	0
Net Goodwill, March 31, 2020	$ 283,000,000