CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 127	$ 161
Less: Net income attributable to noncontrolling interest	11	12
Net income attributable to Masco Corporation	116	149
Other comprehensive income (loss), net of tax (Note K):
Cumulative translation adjustment	(3)	42
Pension and other post-retirement benefits	4	5
Other comprehensive income, net of tax	1	47
Less: Other comprehensive (loss) income attributable to noncontrolling interest	(3)	7
Other comprehensive income attributable to Masco Corporation	4	40
Total comprehensive income	128	208
Less: Total comprehensive income attributable to noncontrolling interest	8	19
Total comprehensive income attributable to Masco Corporation	$ 120	$ 189