CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Net sales	$ 8,359	$ 7,642	$ 7,361
Cost of sales	5,670	5,030	4,899
Gross profit	2,689	2,612	2,462
Selling, general and administrative expenses	1,478	1,418	1,375
Operating profit	1,211	1,194	1,087
Other income (expense), net:
Interest expense	(156)	(278)	(229)
Other, net	(13)	(32)	(26)
Total other income (expense), net	(169)	(310)	(255)
Income before income taxes	1,042	884	832
Income tax expense	258	304	296
Net income	784	580	536
Less: Net income attributable to noncontrolling interest	50	47	43
Net income attributable to Masco Corporation	$ 734	$ 533	$ 493
Basic:
Net income, basic (in dollars per share)	$ 2.38	$ 1.68	$ 1.49
Diluted:
Net income, diluted (in dollars per share)	$ 2.37	$ 1.66	$ 1.48