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Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Mar. 31, 2019	Jun. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Goodwill [Line Items]
Gross goodwill at period start			$ 1,824	$ 1,824
Accumulated Impairment Losses			(933)	(926)
Goodwill	$ 898	$ 898	891	898
Goodwill [Roll Forward]
Beginning balance	898	898
Ending balance		891
Plumbing Products
Goodwill [Line Items]
Gross goodwill at period start			568	568
Accumulated Impairment Losses			(340)	(340)
Goodwill	228	228	228	228
Goodwill [Roll Forward]
Beginning balance	228	228
Pre-Tax Impairment Charges		0
Ending balance		228
Decorative Architectural Products
Goodwill [Line Items]
Gross goodwill at period start			358	358
Accumulated Impairment Losses			(75)	(75)
Goodwill	283	283	283	283
Goodwill [Roll Forward]
Beginning balance	283	283
Pre-Tax Impairment Charges		0
Ending balance		283
Cabinetry Products
Goodwill [Line Items]
Gross goodwill at period start			181	181
Accumulated Impairment Losses			0	0
Goodwill	181	181	181	181
Goodwill [Roll Forward]
Beginning balance	181	181
Pre-Tax Impairment Charges		0
Ending balance		181
Windows and Other Specialty Products
Goodwill [Line Items]
Gross goodwill at period start			717	717
Accumulated Impairment Losses			(518)	(511)
Goodwill	206	199	$ 199	$ 206
Goodwill [Roll Forward]
Beginning balance	206	206
Pre-Tax Impairment Charges	$ 7	(7)
Ending balance		$ 199