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Employee Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]  
Schedule of Non-Vested Stock Awards

A summary of the status of our non-vested stock awards is presented in the table below:

 

     Shares /
Units		      Weighted
Average Market
Value Per Share		  

Balance at December 31, 2013

      7,541,509      $ 20.76  

Granted

      2,118,637        30.78  

Vested

      (1,976,587 )       19.02  

Forfeited

      (141,463 )       20.15  
  

 

 

     

Balance at December 31, 2014

      7,542,096        22.53  

Granted

      2,195,638        36.80  

Vested

      (2,033,263 )       21.29  

Forfeited

      (237,406 )       26.10  
  

 

 

     

Balance at December 31, 2015

      7,467,065        29.08  

Granted

      1,496,408        29.24  

Vested

      (3,840,379 )       25.09  

Forfeited

      (279,821 )       28.62  
  

 

 

     

Balance at December 31, 2016

      4,843,273        31.66