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Earnings Per Common Share (Tables)
6 Months Ended
Jun. 30, 2011
Earnings Per Common Share (Tables) [Abstract]  
Earnings Per Common Share
                                     
 
    Three Months
    Six Months 
    Ended June     Ended June 
in millions, except per share amounts   2011     2010     2011     2010      
 
Numerator for basic and diluted EPS — net earnings applicable to common shareholders
  $ 1,052     $ 453     $ 1,960     $ 3,749      
Denominator for basic EPS — weighted average number of common shares
    531.9       539.8       536.2       542.9      
Effect of dilutive securities:
                                   
RSUs
    14.3       14.2       13.4       13.2      
Stock options and warrants
    23.3       26.4       26.8       29.1      
 
 
Dilutive potential common shares
    37.6       40.6       40.2       42.3      
 
 
Denominator for diluted EPS — weighted average number of common shares and dilutive potential common shares
    569.5       580.4       576.4       585.2      
Basic EPS
  $ 1.96     $ 0.82     $ 3.62     $ 6.87      
Diluted EPS
    1.85       0.78       3.40       6.41      
 
 
Effect of dilutive securities
                                     
 
    Three Months
    Six Months 
    Ended June     Ended June 
in millions   2011     2010     2011     2010      
 
Number of antidilutive RSUs and common shares underlying antidilutive stock options and warrants
    6.5       6.1       6.3       6.0