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STOCK-BASED COMPENSATION. (Tables)
6 Months Ended
Jun. 30, 2011
Stock-Based Compensation [Abstract]  
Rollforward of Stock Options [Table Text Block]
                 
            Weighted-
            average
            exercise
    Options   price
Outstanding at beginning of year
    37,759,580     $ 41.34  
Semiannual grants
    2,894,480     $ 70.33  
Reload grants
    27,278     $ 67.11  
New hire grants
    23,850     $ 63.93  
Non-employee director grants
    8,000     $ 64.94  
Exercised
    (2,200,462 )   $ 32.85  
Forfeited
    (260,560 )   $ 48.12  
 
               
Outstanding at end of period
    38,252,166     $ 44.01  
 
               
Exercisable at end of period
    19,638,524     $ 38.09  
 
               
Rollforward of Restricted Shares and Restricted Stock Units [Table Text Block]
                         
            Restricted    
    Restricted   stock   Weighted-average
    shares   units   fair value
Nonvested at beginning of year
    638,532       368,201     $ 46.92  
Granted to employees and directors
    128,975       73,550     $ 69.95  
Vested
    (8,675 )     (11,032 )   $ 53.42  
Forfeited
    (13,490 )     (38,103 )   $ 47.81  
 
                       
Nonvested at end of period
    745,342       392,616     $ 50.87  
 
                       
Future Stock-Based Compensation [Table Text Block]
         
Third quarter 2011
  $ 24.5  
Fourth quarter 2011
    19.5  
2012
    60.1  
2013 through 2016
    58.9  
Total
  $ 163.0