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Federal Income Taxes (Tables)
9 Months Ended
Sep. 30, 2012
Notes to Financial Statements [Abstract]  
Reconciliation of effective tax rate differences
         For the Three For the Nine
         Months Ended Months Ended
         September 30, September 30,
         2012 2011 2012 2011
Tax rate times pre-tax income$ 146 $ 54 $ 409 $ 347
Effect of:           
 Tax-preferred investment income  (32)   (47)   (101)   (107)
 Tax credits  (17)   (14)   (38)   (35)
 Change in uncertain tax positions  (83)   -   (83)   -
 Other items  31   1   37   9
  Federal income tax expense (benefit)$ 45 $ (6) $ 224 $ 214
Effective tax rate 11%  -4%  19%  22%
Reconciliation of unrecognized tax benefits
         For the Nine 
         Months Ended 
         September 30, 
         2012 2011 
Balance as of beginning-of-year$ 316 $ 318 
 Decreases for prior year tax positions  (200)   (12) 
 Increases for current year tax positions  27   2 
 Decreases for lapse of statute of limitations  (74)   - 
  Balance as of end-of-period$ 69 $ 308