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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Statement of Comprehensive Income [Abstract]        
Net income $ 240 $ 200 $ 801 $ 682
Less: Net income attributable to noncontrolling interest 10 11 40 36
Net income attributable to Masco Corporation 230 189 761 645
Other comprehensive income (loss), net of tax        
Currency translation adjustment 6 2 (20) 114
Pension and other post-retirement benefits 0 0 1 1
Other comprehensive income (loss), net of tax 7 2 (19) 115
Less: Other comprehensive (loss) income attributable to noncontrolling interest (1) 1 (9) 25
Other comprehensive income (loss) attributable to Masco Corporation 8 2 (10) 89
Total comprehensive income 247 203 782 797
Less: Total comprehensive income attributable to noncontrolling interest 9 12 32 62
Total comprehensive income attributable to Masco Corporation $ 237 $ 191 $ 751 $ 735