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Divestitures (Tables)
12 Months Ended
Dec. 31, 2011
Divestitures [Abstract]  
Divestitures
     
(in millions) 2011  2010  2009 
Loss before income taxes and noncontrolling interest$ (8) $ (11) $ (125) 
Income tax benefit, including tax credits  3   5   47 
Loss from discontinued operations attributable to controlling interests$ (5) $ (6) $ (78)