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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2011
Earnings Per Share [Abstract]  
Reconciliation Of Numerators And Denominators Of Basic And Diluted Earnings Per Share
    2011     2010     2009  
    Income
(Numerator)		     Weighted
Shares
(Denominator)		     Per-Share
Amount		     Income
(Numerator)		     Weighted
Shares
(Denominator)		     Per-Share
Amount		     Income
(Numerator)		     Weighted
Shares
(Denominator)		     Per-Share
Amount		  
    (Amounts in thousands, except per share data)  

Basic EPS

                  

Income available to common stockholders

   $ 191,164        54,825      $ 3.49      $ 152,198        54,792      $ 2.78      $ 403,072        54,770      $ 7.36   

Effect of dilutive securities:

                  

Options

     0        20          0        34          0        322     
 

 

 

    

 

 

      

 

 

    

 

 

      

 

 

    

 

 

    

Diluted EPS

                  

Income available to common stockholders after assumed conversions

   $ 191,164        54,845      $ 3.49      $ 152,198        54,826      $ 2.78      $ 403,072        55,092      $ 7.32