GOODWILL AND OTHER INTANGIBLE ASSETS - Changes in the Carrying Amount of Goodwill (Details) - USD ($)	3 Months Ended			12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Gross Goodwill	$ 1,028,000,000	$ 978,000,000	$ 924,000,000	$ 1,028,000,000	$ 978,000,000
Accumulated Impairment Losses	(460,000,000)	(415,000,000)	(415,000,000)	(460,000,000)	(415,000,000)
Changes in the carrying amount of goodwill
Beginning balance				563,000,000	509,000,000
Acquisitions				64,000,000	41,000,000
Pre-tax Impairment Charge	0	0	0	(45,000,000)	0
Other				(14,000,000)	13,000,000
Ending balance	568,000,000	563,000,000	509,000,000	568,000,000	563,000,000
Plumbing Products
Goodwill [Line Items]
Gross Goodwill	662,000,000	613,000,000	566,000,000	662,000,000	613,000,000
Accumulated Impairment Losses	(340,000,000)	(340,000,000)	(340,000,000)	(340,000,000)	(340,000,000)
Changes in the carrying amount of goodwill
Beginning balance				273,000,000	226,000,000
Acquisitions				63,000,000	34,000,000
Pre-tax Impairment Charge				0	0
Other				(14,000,000)	13,000,000
Ending balance	322,000,000	273,000,000	226,000,000	322,000,000	273,000,000
Decorative Architectural Products
Goodwill [Line Items]
Gross Goodwill	366,000,000	365,000,000	358,000,000	366,000,000	365,000,000
Accumulated Impairment Losses	(120,000,000)	(75,000,000)	(75,000,000)	(120,000,000)	(75,000,000)
Changes in the carrying amount of goodwill
Beginning balance				290,000,000	283,000,000
Acquisitions				1,000,000	7,000,000
Pre-tax Impairment Charge	(45,000,000)			(45,000,000)	0
Other				0	0
Ending balance	$ 246,000,000	$ 290,000,000	$ 283,000,000	$ 246,000,000	$ 290,000,000