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SHAREHOLDERS' EQUITY (Tables)
12 Months Ended
Dec. 31, 2021
Equity [Abstract]  
Schedule of components of accumulated other comprehensive loss The components of accumulated other comprehensive income (loss) attributable to Masco Corporation were as follows, in millions:
 At December 31,
 20212020
Cumulative translation adjustments, net$312 $325 
Unrealized loss on interest rate swaps, net— (7)
Unrecognized net loss and prior service cost, net(80)(460)
Accumulated other comprehensive income (loss)$232 $(142)