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Shareholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2011
Shareholders' Equity (Tables) [Abstract]  
Accumulated other comprehensive income attributable to Masco Corporation
                 
    At December 31  
    2011     2010  

Cumulative translation adjustments

   $ 482     $ 505  

Unrealized (loss) gain on marketable securities, net

     (12 )      26  

Unrealized (loss) on interest rate swaps

     (23 )      —  

Unrecognized prior service cost and net loss, net

     (371 )      (258 ) 
   

 

 

    

 

 

  

Accumulated other comprehensive income

   $ 76     $ 273