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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2012
Schedule Of Basic And Diluted Earnings Per Share
     Years Ended December 31,  

$ in millions except share and per share amounts

    2012      2011      2010  

Net income (loss)

    $ 1,234      $ (1,319)       $ 53  

Basic weighted average shares (1)

      193,842,435        197,019,968        202,421,433  

Effect of common stock equivalents:

         

Stock options

      1,062,395        —        599,701  
  

 

 

     

 

 

     

 

 

  

Diluted weighted average shares

      194,904,830        197,019,968        203,021,134  
  

 

 

     

 

 

     

 

 

  

Net income (loss) per common share:

         

Basic

    $ 6.36      $ (6.69)       $ 0.26  
  

 

 

     

 

 

     

 

 

  

Diluted

    $ 6.33      $ (6.69)       $ 0.26  
  

 

 

     

 

 

     

 

 

  

 

(1)—Includes 5,514,523, 5,080,742 and 5,325,428 of unvested restricted stock and units that receive nonforfeitable dividends or dividend equivalents for the years ended December 31, 2012, 2011 and 2010, respectively.