Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Information
Net sales	$ 2,179	$ 1,764	$ 4,149	$ 3,345
Operating Profit (Loss)	437	339	802	564
Other income (expense), net	(440)	(37)	(648)	(88)
(Loss) income from continuing operations before income taxes	(3)	302	154	476
North America
Segment Information
Net sales	1,717	1,480	3,246	2,738
International, principally Europe
Segment Information
Net sales	462	284	903	607
Plumbing Products (A)
Segment Information
Net sales	1,329	868	2,578	1,823
Plumbing Products (A) | North America
Segment Information
Net sales	867	584	1,675	1,216
Plumbing Products (A) | International, principally Europe
Segment Information
Net sales	462	284	903	607
Decorative Architectural Products
Segment Information
Net sales	850	896	1,571	1,522
Decorative Architectural Products | North America
Segment Information
Net sales	850	896	1,571	1,522
Decorative Architectural Products | International, principally Europe
Segment Information
Net sales	0	0	0	0
Operating Segments
Segment Information
Net sales	2,179	1,764	4,149	3,345
Operating Profit (Loss)	461	356	855	608
Operating Segments | Plumbing Products (A)
Segment Information
Net sales	1,329	868	2,578	1,823
Operating Profit (Loss)	273	155	525	312
Operating Segments | Decorative Architectural Products
Segment Information
Net sales	850	896	1,571	1,522
Operating Profit (Loss)	188	201	330	296
Geographic Areas
Segment Information
Net sales	2,179	1,764	4,149	3,345
Operating Profit (Loss)	461	356	855	608
Geographic Areas | North America
Segment Information
Net sales	1,717	1,480	3,246	2,738
Operating Profit (Loss)	370	321	678	531
Geographic Areas | International, principally Europe
Segment Information
Net sales	462	284	903	607
Operating Profit (Loss)	91	35	177	77
Corporate, Non-Segment
Segment Information
General corporate expense, net	$ (24)	$ (17)	$ (53)	$ (44)