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Discontinued Operations (Tables)
12 Months Ended
Dec. 31, 2012
Summary of Financial Information for Discontinued Operations

Summary of financial information for discontinued operations is as follows (in millions):

 

     Year Ended December 31,  
     2012      2011      2010  

Income Statement Data

        

Gain (loss) on disposition, net of tax

   $ 92       $ (13    $ 168   

Income (loss) from operations, net of tax

   $ -       $ -       $ (1