CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 114	$ 538
Less: Net income attributable to noncontrolling interest	20	8
Net income attributable to Masco Corporation	94	530
Other comprehensive income (loss), net of tax (Note L):
Cumulative translation adjustment	(36)	(29)
Interest rate swaps	7	0
Pension and other post-retirement benefits	5	5
Other comprehensive (loss), net of tax	(24)	(24)
Less: Other comprehensive (loss) attributable to noncontrolling interest	(12)	(4)
Other comprehensive (loss) attributable to Masco Corporation	(12)	(20)
Total comprehensive income	90	514
Less: Total comprehensive income attributable to noncontrolling interest	8	4
Total comprehensive income attributable to Masco Corporation	$ 82	$ 510