CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 784	$ 580	$ 536
Less: Net income attributable to noncontrolling interest	50	47	43
Net income attributable to Masco Corporation	734	533	493
Other comprehensive (loss) income, net of tax (Note O):
Cumulative translation adjustment	(31)	133	(78)
Interest rate swaps	2	3	1
Pension and other post-retirement benefits	9	63	(15)
Realized loss on available-for-sale securities	0	0	12
Other comprehensive (loss) income, net of tax	(20)	199	(80)
Less: Other comprehensive (loss) income attributable to the noncontrolling interest:
Cumulative translation adjustment	(15)	28	(10)
Pension and other post-retirement benefits	(2)	1	0
Less: Other comprehensive (loss) income attributable to noncontrolling interest	(17)	29	(10)
Other comprehensive (loss) income attributable to Masco Corporation	(3)	170	(70)
Total comprehensive income	764	779	456
Less: Total comprehensive income attributable to noncontrolling interest	33	76	33
Total comprehensive income attributable to Masco Corporation	$ 731	$ 703	$ 423