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Earnings Per Share (Tables) (Unaudited)
 6 Months Ended
Jun. 30, 2011
EARNINGS PER SHARE [Abstract]  
Share Repurchases
 
                                             
                    Shares Repurchased
                    (in millions)
    Amount
       Total
       Six Months Ended
Repurchase Program
 		  Authorized
 		  Average Price
 		  Shares Retired
 		      June 30
Authorization Date   (in millions)   Per Share(2)   (in millions)   Date Completed   2011   2010
December 19, 2007
  $ 3,600     $ 59.82       60.2     August 2010             14.8  
June 16, 2010(1)
    4,245       63.33       19.7           15.7          
 
                                  15.7       14.8  
 
 
(1) On June 16, 2010, the company’s board of directors authorized a share repurchase program of up to $2 billion of the company’s common stock. On April 25, 2011, the company’s board of directors authorized an increase to the remaining share repurchase authorization to $4.0 billion, an increase of approximately $2.2 billion. As of June 30, 2011, the company had $3.0 billion remaining under this authorization for share repurchases.
 
(2) Includes commissions paid and calculated as the average price paid per share under the respective repurchase program.