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Earnings Per Share
 3 Months Ended
Mar. 31, 2014
Earnings Per Share [Abstract]  
Earnings Per Share
6) Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share:

 

     Three Months Ended
March 31		  
     2014      2013  
     (in millions, except
for per share
amounts)		  

Basic earnings per share:

      

Net income

    $ 449       $ 656   
  

 

 

     

 

 

  

Weighted average shares outstanding

      248.6         263.3   
  

 

 

     

 

 

  

Basic earnings per share

    $ 1.81       $ 2.49   
  

 

 

     

 

 

  

Diluted earnings per share:

      

Net income

    $ 449       $ 656   
  

 

 

     

 

 

  

Weighted average shares outstanding

      248.6        263.3   

Additional shares from assumed issuance of shares under stock-based compensation awards

      .6         1.5   
  

 

 

     

 

 

  

Weighted average shares and potential shares assumed outstanding for computing diluted earnings per share

      249.2         264.8   
  

 

 

     

 

 

  

Diluted earnings per share

    $ 1.80       $ 2.48