CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Net sales	$ 2,297	$ 2,066	$ 4,217	$ 3,844
Cost of sales	1,547	1,320	2,848	2,493
Gross profit	750	746	1,369	1,351
Selling, general and administrative expenses	392	374	767	722
Operating profit	358	372	602	629
Other income (expense), net:
Interest expense	(38)	(153)	(79)	(196)
Other, net	(8)	43	(11)	39
Total other income (expense), net	(46)	(110)	(90)	(157)
Income before income taxes	312	262	512	472
Income tax expense	88	86	127	148
Net income	224	176	385	324
Less: Net income attributable to noncontrolling interest	13	13	25	23
Net income attributable to Masco Corporation	$ 211	$ 163	$ 360	$ 301
Basic:
Net income (in dollars per share)	$ 0.69	$ 0.51	$ 1.16	$ 0.94
Diluted:
Net income (in dollars per share)	$ 0.68	$ 0.51	$ 1.15	$ 0.93