SEGMENT INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net Sales
Net sales	$ 1,639	$ 1,716	$ 1,839	$ 1,513	$ 1,635	$ 1,665	$ 1,838	$ 1,516	$ 6,707	$ 6,654	$ 6,014
Operating Profit (Loss)									1,088	1,077	1,029
Total other income (expense), net									(174)	(170)	(311)
Income from continuing operations before income taxes									914	907	718
Assets	5,027				5,393				5,027	5,393	5,534
Assets classified as held for sale	528				1,195				528	1,195	1,202
Export sales from U.S. included in net sales									$ 244	$ 237	$ 207
Maximum
Net Sales
Intra-company sales between segments in percentage									1.00%	1.00%	1.00%
One customer | Customer concentration risk | Sales
Net Sales
Net sales									$ 2,481	$ 2,457	$ 2,341
North America [Member]
Net Sales
Net sales									5,328	5,208	4,568
Foreign Locations [Member]
Net Sales
Net sales									1,379	1,446	1,370
UNITED STATES
Net Sales
Long-lived assets	1,198				1,119				1,198	1,119	777
UNITED STATES | Sales
Net Sales
Net sales									5,127	5,034	4,352
Europe [Member]
Net Sales
Long-lived assets	470				446				470	446	431
Plumbing Products [Member]
Net Sales
Net sales									3,984	3,998	3,732
Plumbing Products [Member] | North America [Member]
Net Sales
Net sales									2,605	2,552	2,362
Plumbing Products [Member] | Foreign Locations [Member]
Net Sales
Net sales									1,379	1,446	1,370
Decorative Architectural Products [Member]
Net Sales
Net sales									2,723	2,656	2,206
Decorative Architectural Products [Member] | North America [Member]
Net Sales
Net sales									2,723	2,656	2,206
Decorative Architectural Products [Member] | Foreign Locations [Member]
Net Sales
Net sales									0	0	0
Operating Segments
Net Sales
Net sales									6,707	6,654	5,938
Operating Profit (Loss)									1,188	1,171	1,140
Assets	3,901				3,787				3,901	3,787	3,263
Operating Segments | North America [Member]
Net Sales
Net sales									5,328	5,208	4,568
Operating Profit (Loss)									987	954	924
Assets	2,785				2,729				2,785	2,729	2,131
Operating Segments | Foreign Locations [Member]
Net Sales
Net sales									1,379	1,446	1,370
Operating Profit (Loss)									201	217	216
Assets	1,116				1,058				1,116	1,058	1,132
Operating Segments | Plumbing Products [Member]
Net Sales
Net sales									3,984	3,998	3,732
Operating Profit (Loss)									708	715	702
Assets	2,375				2,253				2,375	2,253	2,298
Operating Segments | Decorative Architectural Products [Member]
Net Sales
Net sales									2,723	2,656	2,206
Operating Profit (Loss)									480	456	438
Assets	1,526				1,534				1,526	1,534	965
Corporate, Non-Segment
Net Sales
General corporate expense, net									(100)	(94)	(105)
Assets	$ 598				$ 411				$ 598	$ 411	1,069
Continuing Operations [Member]
Net Sales
Net sales											5,938
Continuing Operations [Member] | Operating Segments
Net Sales
Net sales											5,938
Operating Profit (Loss)											1,140
Discontinued Operations [Member]
Net Sales
Net sales											76
Operating Profit (Loss)											$ (6)