CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 224	$ 176	$ 385	$ 324
Less: Net income attributable to noncontrolling interest	13	13	25	23
Net income attributable to Masco Corporation	211	163	360	301
Other comprehensive income (loss), net of tax (Note L):
Cumulative translation adjustment	(57)	65	(15)	86
Interest rate swaps	1	2	1	2
Pension and other post-retirement benefits	3	3	8	7
Other comprehensive (loss) income	(53)	70	(6)	95
Less: Other comprehensive (loss) income attributable to noncontrolling interest	(19)	14	(12)	18
Other comprehensive (loss) income attributable to Masco Corporation	(34)	56	6	77
Total comprehensive income	171	246	379	419
Less: Total comprehensive (loss) income attributable to the noncontrolling interest	(6)	27	13	41
Total comprehensive income attributable to Masco Corporation	$ 177	$ 219	$ 366	$ 378