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Long-Term Compensation (Tables)
6 Months Ended
Jun. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock option and other share based activity
                         
    Options Outstanding        
    Number of Options     Weighted Average
Exercise Price
    Options Exercisable  

Balance at December 31, 2011

    9,879,960     $ 34.93          

Exercised

    (1,050,158     22.28          

Forfeited

    (113,917     43.79          
   

 

 

   

 

 

   

 

 

 

Balance at June 30, 2012

    8,715,885     $ 36.34       8,122,335  
   

 

 

   

 

 

   

 

 

 
Restricted Stock [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Non-vested share options
                 
          Weighted Average  
    Number of     Grant Date Fair  
    Shares     Value  

Balance at December 31, 2011

    1,192,982          

Granted

    5,000          

Vested

    (500,168        

Forfeited

    (1,797        
   

 

 

         

Balance at June 30, 2012

    696,017     $ 34.03  
   

 

 

   

 

 

 
RSU and PSA [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock option and other share based activity
                         
    Number of     Weighted Average     Number of  
    Shares     Grant-Date Fair Value     Shares Vested  

Balance at December 31, 2011

    1,684,713                  

Granted

    1,606,377                  

Distributed

    (666,533                

Forfeited/Expired

    (42,041                
   

 

 

                 

Balance at June 30, 2012

    2,582,516     $ 31.98       48,735