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Goodwill and Other Intangibles (Tables)
12 Months Ended
Dec. 31, 2011
Goodwill and Other Intangibles [Abstract]  
Changes in the carrying value of goodwill by reporting segment
                         
    Property and     Annuity and        
    Casualty     Supplemental     Total  
Balance January 1, 2010
  $ 152     $ 56     $ 208  
Impairment charge
          (22 )     (22 )
 
                 
 
                       
Balance December 31, 2010 and 2011
  $ 152     $ 34     $ 186