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Derivative Instruments (Tables)
12 Months Ended
Dec. 31, 2011
Derivative Instruments [Abstract]  
Schedule Of Derivative Fair Values On Condensed Consolidated Balance Sheets
Schedule Of Unrealized And Realized Gains (Losses) On Derivatives Recorded In The Consolidated Income Statement
           For the year ended
December 31,
 
    

Location of Gain (Loss) Recognized in

the Consolidated Income Statements

   2011     2010     2009  

Derivatives not designated as hedging instruments

         

Relating to investment portfolio:

         

Put options

   Net realized investment losses    $ (4,125   $      $   

Foreign exchange contracts

   Net realized investment losses      (6,242              

Interest rate futures

   Net realized investment losses      (59,723              
     

 

 

   

 

 

   

 

 

 
      $ (70,090   $      $   

Relating to operating activities and capital management:

         

Foreign exchange contracts

   Foreign exchange (losses) gains    $ (6,005   $ 3,403      $ 6,904   

Treasury yield hedge

   Net realized investment losses             (3,958       
     

 

 

   

 

 

   

 

 

 

Total derivatives

      $ (76,095   $ (555   $ 6,904