CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Net sales	$ 7,644	$ 7,357	$ 7,142
Cost of sales	5,033	4,901	4,889
Gross profit	2,611	2,456	2,253
Selling, general and administrative expenses	1,442	1,403	1,339
Operating profit	1,169	1,053	914
Other income (expense), net:
Interest expense	(278)	(229)	(225)
Other, net	(6)	6	0
Total other income (expense), net	(284)	(223)	(225)
Income from continuing operations before income taxes	885	830	689
Income tax expense	305	296	293
Income from continuing operations	580	534	396
Loss from discontinued operations, net	0	0	(2)
Net income	580	534	394
Less: Net income attributable to noncontrolling interest	47	43	39
Net income attributable to Masco Corporation	$ 533	$ 491	$ 355
Basic:
Income from continuing operations (in dollars per share)	$ 1.68	$ 1.49	$ 1.04
Loss from discontinued operations, net (in dollars per share)	0.00	0.00	(0.01)
Net income (in dollars per share)	1.68	1.49	1.03
Diluted:
Income from continuing operations (in dollars per share)	1.66	1.47	1.03
Loss from discontinued operations, net (in dollars per share)	0.00	0.00	(0.01)
Net income (in dollars per share)	$ 1.66	$ 1.47	$ 1.02
Amounts attributable to Masco Corporation:
Income from continuing operations	$ 533	$ 491	$ 357
Loss from discontinued operations, net	0	0	(2)
Net income attributable to Masco Corporation	$ 533	$ 491	$ 355