CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 161	$ 148
Less: Net income attributable to noncontrolling interest	12	10
Net income attributable to Masco Corporation	149	138
Other comprehensive income (loss), net of tax (Note K):
Cumulative translation adjustment	42	21
Pension and other post-retirement benefits	5	4
Other comprehensive income	47	25
Less: Other comprehensive income attributable to noncontrolling interest	7	4
Other comprehensive income attributable to Masco Corporation	40	21
Total comprehensive income	208	173
Less: Total comprehensive income attributable to the noncontrolling interest	19	14
Total comprehensive income attributable to Masco Corporation	$ 189	$ 159