CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net sales	$ 2,275	$ 2,297	$ 4,183	$ 4,217
Cost of sales	1,493	1,547	2,802	2,848
Gross profit	782	750	1,381	1,369
Selling, general and administrative expenses	390	392	762	767
Impairment charges for goodwill and other intangible assets	0	0	16	0
Operating profit	392	358	603	602
Other income (expense), net:
Interest expense	(41)	(38)	(80)	(79)
Other, net	(4)	(8)	(8)	(11)
Total other income (expense), net	(45)	(46)	(88)	(90)
Income before income taxes	347	312	515	512
Income tax expense	95	88	136	127
Net income	252	224	379	385
Less: Net income attributable to noncontrolling interest	12	13	23	25
Net income attributable to Masco Corporation	$ 240	$ 211	$ 356	$ 360
Basic:
Net income (in dollars per share)	$ 0.82	$ 0.69	$ 1.22	$ 1.16
Diluted:
Net income (in dollars per share)	$ 0.82	$ 0.68	$ 1.21	$ 1.15