GOODWILL AND OTHER INTANGIBLE ASSETS - Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Gross Goodwill	$ 926	$ 924	$ 926	$ 868
Accumulated Impairment Losses	(415)	(415)	(415)	(415)
Changes in the carrying amount of goodwill
Beginning balance		511	453
Goodwill, Acquired During Period		0	64
Other		(2)	(6)
Ending balance	511	509	511	453
Plumbing Products [Member]
Goodwill [Line Items]
Gross Goodwill	568	566	568	574
Accumulated Impairment Losses	(340)	(340)	(340)	(340)
Changes in the carrying amount of goodwill
Beginning balance		228	234
Goodwill, Acquired During Period	0		0	38
Other		(2)	(6)
Ending balance	228	226	228	234
Decorative Architectural Products [Member]
Goodwill [Line Items]
Gross Goodwill	358	358	358	294
Accumulated Impairment Losses	(75)	(75)	(75)	(75)
Changes in the carrying amount of goodwill
Beginning balance		283	219
Goodwill, Acquired During Period		0	64
Other		0	0
Ending balance	$ 283	$ 283	$ 283	$ 219