CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 160	$ 146	$ 481	$ 428
Less: Net income attributable to noncontrolling interest	12	12	35	35
Net income attributable to Masco Corporation	148	134	446	393
Other comprehensive income (loss), net of tax (Note J):
Cumulative translation adjustment	33	(1)	119	(10)
Interest rate swaps	0	0	2	1
Pension and other post-retirement benefits	4	3	11	9
Realized gain on available-for-sale securities	0	0	0	(1)
Other comprehensive income (loss)	37	2	132	(1)
Less: Other comprehensive income attributable to noncontrolling interest	6	2	24	4
Other comprehensive income (loss) attributable to Masco Corporation	31	0	108	(5)
Total comprehensive income	197	148	613	427
Less: Total comprehensive income attributable to the noncontrolling interest	18	14	59	39
Total comprehensive income attributable to Masco Corporation	$ 179	$ 134	$ 554	$ 388