CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Net sales	$ 1,983	$ 1,716	$ 5,328	$ 5,068
Cost of sales	1,231	1,105	3,401	3,262
Gross profit	752	611	1,927	1,806
Selling, general and administrative expenses	328	322	939	964
Impairment charge for other intangible assets	0	0	0	9
Operating profit	424	289	988	833
Other income (expense), net:
Interest expense	(40)	(39)	(110)	(119)
Other, net	(4)	(9)	(22)	(17)
Total other income (expense), net	(44)	(48)	(132)	(136)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	380	241	856	697
Income tax expense	87	66	202	181
Income from continuing operations	293	175	654	516
(Loss) income from discontinued operations, net	0	(37)	411	1
Net income	293	138	1,065	517
Less: Net income attributable to noncontrolling interest	18	12	36	35
Net income attributable to Masco Corporation	$ 275	$ 126	$ 1,029	$ 482
Basic:
Income from continuing operations (in dollars per share)	$ 1.05	$ 0.57	$ 2.31	$ 1.66
(Loss) income from discontinued operations, net (in dollars per share)	0	(0.13)	1.54	0
Net income (in dollars per share)	1.05	0.44	3.85	1.66
Diluted:
Income from continuing operations (in dollars per share)	1.05	0.56	2.31	1.65
(Loss) income from discontinued operations, net (in dollars per share)	0	(0.12)	1.54	0
Net income (in dollars per share)	$ 1.05	$ 0.44	$ 3.85	$ 1.65
Amounts attributable to Masco Corporation:
Income from continuing operations	$ 275	$ 163	$ 618	$ 481
(Loss) income from discontinued operations, net	$ 0	$ (37)	$ 411	$ 1