SEGMENT INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net Sales
Net sales	$ 2,041	$ 2,101	$ 2,297	$ 1,920	$ 1,853	$ 1,945	$ 2,066	$ 1,778	$ 8,359	$ 7,642	$ 7,361
Operating Profit (Loss)									1,211	1,194	1,087
Total other income (expense), net									(169)	(310)	(255)
Income before income taxes									1,042	884	832
Assets	5,393				5,534				5,393	5,534	5,164
Export sales from U.S. included in net sales									$ 259	$ 232	$ 226
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									$ 2,670	$ 2,535	$ 2,480
North America
Net Sales
Net sales									6,763	6,067	5,838
Foreign Locations [Member]
Net Sales
Net sales									1,596	1,575	1,523
UNITED STATES
Net Sales
Long-lived assets	1,928				492				1,928	492	1,582
UNITED STATES | Sales
Net Sales
Net sales									6,587	5,819	5,609
Europe
Net Sales
Long-lived assets	482				1,508				482	1,508	417
Plumbing Products
Net Sales
Net sales									3,998	3,732	3,529
Plumbing Products | North America
Net Sales
Net sales									2,552	2,362	2,238
Plumbing Products | Foreign Locations [Member]
Net Sales
Net sales									1,446	1,370	1,291
Decorative Architectural Products
Net Sales
Net sales									2,656	2,206	2,092
Decorative Architectural Products | North America
Net Sales
Net sales									2,656	2,206	2,092
Decorative Architectural Products | Foreign Locations [Member]
Net Sales
Net sales									0	0	0
Cabinetry Products
Net Sales
Net sales									950	934	970
Cabinetry Products | North America
Net Sales
Net sales									950	891	908
Cabinetry Products | Foreign Locations [Member]
Net Sales
Net sales									0	43	62
Windows and Other Specialty Products
Net Sales
Net sales									755	770	770
Windows and Other Specialty Products | North America
Net Sales
Net sales									605	608	600
Windows and Other Specialty Products | Foreign Locations [Member]
Net Sales
Net sales									150	162	170
Operating Segments
Net Sales
Net sales									8,359	7,642	7,361
Operating Profit (Loss)									1,291	1,286	1,181
Assets	4,984				4,466				4,984	4,466	4,213
Operating Segments | Plumbing Products
Net Sales
Net sales									3,998	3,732	3,529
Operating Profit (Loss)									715	702	654
Assets	2,253				2,298				2,253	2,298	2,028
Operating Segments | Decorative Architectural Products
Net Sales
Net sales									2,656	2,206	2,092
Operating Profit (Loss)									456	438	433
Assets	1,534				965				1,534	965	900
Operating Segments | Cabinetry Products
Net Sales
Net sales									950	934	970
Operating Profit (Loss)									86	92	97
Assets	537				526				537	526	539
Operating Segments | Windows and Other Specialty Products
Net Sales
Net sales									755	770	770
Operating Profit (Loss)									34	54	(3)
Assets	660				677				660	677	746
Reportable Geographical Components
Net Sales
Net sales									8,359	7,642	7,361
Operating Profit (Loss)									1,291	1,286	1,181
Assets	4,984				4,466				4,984	4,466	4,213
Reportable Geographical Components | North America
Net Sales
Net sales									6,763	6,067	5,838
Operating Profit (Loss)									1,094	1,080	973
Assets	3,832				3,236				3,832	3,236	3,029
Reportable Geographical Components | Foreign Locations [Member]
Net Sales
Net sales									1,596	1,575	1,523
Operating Profit (Loss)									197	206	208
Assets	1,152				1,230				1,152	1,230	1,184
Corporate, Non-Segment
Net Sales
General corporate expense, net									(80)	(92)	(94)
Assets	$ 409				$ 1,068				$ 409	$ 1,068	$ 951