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Fair Value Disclosures (Tables)
 6 Months Ended
Jun. 30, 2012
Fair Value Of Financial Instruments [Abstract]  
Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis Table Text Block
June 30, 2012:    Fair Value Measurements Using:
  Total  Level 1  Level 2  Level 3
Assets:           
 Fixed maturity securities – available-for-sale:           
  Corporate securities$ 8,401,909 $ 69,954 $ 7,337,941 $ 994,014
  Canadian and Canadian provincial governments  3,929,374   --   3,929,374   --
  Residential mortgage-backed securities  1,078,562   --   1,028,971   49,591
  Asset-backed securities  441,051   --   312,693   128,358
  Commercial mortgage-backed securities  1,348,047   --   1,232,314   115,733
  U.S. government and agencies securities  249,914   182,787   67,127   --
  State and political subdivision securities  229,776   --   215,290   14,486
  Other foreign government supranational and foreign           
   government-sponsored enterprises  1,565,559   222,591   1,342,968   --
    Total fixed maturity securities – available-for-sale  17,244,192   475,332   15,466,678   1,302,182
 Funds withheld at interest – embedded derivatives  (375,337)   --   --   (375,337)
 Cash equivalents  378,595   378,595   --   --
 Short-term investments  3,704   110   3,594   --
 Other invested assets:           
  Non-redeemable preferred stock  75,970   62,131   13,839   --
  Other equity securities  3,227   --   --   3,227
  Derivatives:           
   Interest rate swaps  156,866   --   156,866   --
   Foreign currency forwards  3,275   --   3,275   --
   CPI swaps  388   --   388   --
   Credit default swaps  (4,369)   --   (4,369)   --
   Equity options  94,300   --   94,300   --
  Collateral  26,448   20,813   5,635   --
  Other  10,595   10,595   --   --
    Total other invested assets  366,700   93,539   269,934   3,227
 Reinsurance ceded receivable – embedded derivatives  4,416   --   --   4,416
  Total$ 17,622,270 $ 947,576 $ 15,740,206 $ 934,488
                
Liabilities:           
 Interest sensitive contract liabilities – embedded derivatives $ 938,927 $ -- $ -- $ 938,927
 Other liabilities:           
  Derivatives:           
   Interest rate swaps  132   --   132   --
   Credit default swaps  2,453   --   2,453   --
   Foreign currency swaps  23,154   --   23,154   --
    Total other liabilities  25,739   --   25,739   --
  Total$ 964,666 $ -- $ 25,739 $ 938,927

December 31, 2011:    Fair Value Measurements Using:
  Total  Level 1  Level 2  Level 3
Assets:           
 Fixed maturity securities – available-for-sale:           
  Corporate securities$ 7,461,106 $ 76,097 $ 6,410,840 $ 974,169
  Canadian and Canadian provincial governments  3,869,933   --   3,869,933   --
  Residential mortgage-backed securities  1,227,234   --   1,145,579   81,655
  Asset-backed securities  401,991   --   208,499   193,492
  Commercial mortgage-backed securities  1,242,219   --   1,126,243   115,976
  U.S. government and agencies securities  374,002   300,514   73,488   --
  State and political subdivision securities  205,386   12,894   182,119   10,373
  Other foreign government, supranational and foreign           
   government-sponsored enterprises  1,419,079   223,440   1,195,639   --
    Total fixed maturity securities – available-for-sale  16,200,950   612,945   14,212,340   1,375,665
 Funds withheld at interest – embedded derivatives  (361,456)   --   --   (361,456)
 Cash equivalents  504,522   504,522   --   --
 Short-term investments  46,671   37,155   9,516   --
 Other invested assets:           
  Non-redeemable preferred stock  78,183   58,906   19,277   --
  Other equity securities  35,717   5,308   18,920   11,489
  Derivatives:           
   Interest rate swaps  168,484   --   168,484   --
   Foreign currency forwards  4,560   --   4,560   --
   CPI swaps  766   --   766   --
   Credit default swaps  (4,003)   --   (4,003)   --
   Equity options  87,243   --   87,243   --
  Collateral  32,622   27,052   5,570   --
  Other   59,373   59,373   --   --
    Total other invested assets  462,945   150,639   300,817   11,489
 Reinsurance ceded receivable – embedded derivatives  4,945   --   --   4,945
  Total$ 16,858,577 $ 1,305,261 $ 14,522,673 $ 1,030,643
                
Liabilities:           
 Interest sensitive contract liabilities – embedded derivatives $ 1,028,241 $ -- $ -- $ 1,028,241
 Other liabilities:           
  Derivatives:           
   Interest rate swaps  3,171   --   3,171   --
   Credit default swaps  5,633   --   5,633   --
   Equity options  (2,864)   --   (2,864)   --
   Foreign currency swaps  23,710   --   23,710   --
    Total other liabilities  29,650   --   29,650   --
  Total$ 1,057,891 $ -- $ 29,650 $ 1,028,241
Fair Value Unobservable Input Measurements [Table Text Block]
June 30, 2012:   Valuation Unobservable  Range
    Fair Value Technique(s) Input (Weighted Average)
Assets:         
 State and political subdivision securities $ 14,486 Market comparable securities Liquidity premium 1%
            
 Corporate securities   11,614 Market comparable securities Liquidity premium 1-2% (2%)
            
 Private equity securities   516 Net asset value Fund financial statements Not Applicable
            
 Funds withheld at interest- embedded derivatives   (375,337) Total return swap Mortality 0-100% (1%)
         Lapse 0-35% (4%)
         Withdrawal 0-5% (4%)
         Own Credit 0-1% (0%)
         Crediting rate 2-4% (3%)
            
 Reinsurance ceded receivable- embedded derivatives   4,416 Discounted cash flow Mortality 0-100% (8%)
         Lapse 14-16% (15%)
            
Liabilities:         
 Interest sensitive contract liabilities- embedded derivatives- indexed annuities   733,655 Discounted cash flow Mortality 0-100% (1%)
         Lapse 0-35% (4%)
         Withdrawal 0-5% (4%)
         Option budget projection 2-4% (3%)
            
            
 Interest sensitive contract liabilities- embedded derivatives- variable annuities   205,272 Discounted cash flow Mortality 0-100% (1%)
         Lapse 0-25% (5%)
         Withdrawal 0-7% (4%)
         Own Credit 0-1% (1%)
         Long-term volatility 0-27% (16%)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Level Transfers [Table Text Block]
     Three months ended June 30,
     2012 2011
     Transfers from  Transfers from  Transfers from  Transfers from
     Level 1 to  Level 2 to  Level 1 to  Level 2 to
     Level 2 Level 1 Level 2 Level 1
 Fixed maturity securities - available-for-sale:           
  Corporate securities$ 2,996 $ -- $ -- $ --
  U.S. government and agencies securities  --   11,152   23,065   --
  State and political subdivision securities  12,794   --   --   --
  Other foreign government, supranational and foreign            
   government-sponsored enterprises  1,059   --   371   --
 Total fixed maturity securities  16,849   11,152   23,436   --
  Other equity securities  --   --   2,290   --
 Total $ 16,849 $ 11,152 $ 25,726 $ --

     Six months ended June 30,
     2012 2011
     Transfers from Transfers from Transfers from Transfers from
     Level 1 to Level 2 to Level 1 to Level 2 to
     Level 2 Level 1 Level 2 Level 1
 Fixed maturity securities - available-for-sale:           
  Corporate securities$ 2,996 $ 4 $ -- $ --
  U.S. government and agencies securities  --   11,152   23,065   --
  State and political subdivision securities  12,794   --   --   --
  Other foreign government, supranational and foreign            
   government-sponsored enterprises  1,059   --   371   --
 Total fixed maturity securities  16,849   11,156   23,436   --
  Other equity securities  --   --   2,290   --
 Total$ 16,849 $ 11,156 $ 25,726 $ --
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Text Block]
For the three months ended June 30, 2012:Fixed maturity securities - available-for-sale
        Residential      Commercial   State
        mortgage-     mortgage-  and political
    Corporate   backed   Asset-backed  backed  subdivision
    securities  securities  securities  securities  securities
Fair value, beginning of period$ 977,671 $ 54,435 $ 146,362 $ 118,678 $ 5,239
 Total gains/losses (realized/unrealized)              
  Included in earnings, net:              
   Investment income, net of related expenses  77   188   195   545   9
   Investment related gains (losses), net  (696)   (315)   164   393   (4)
   Claims & other policy benefits  --   --   --   --   --
   Interest credited  --   --   --   --   --
   Policy acquisition costs and other insurance expenses  --   --   --   --   --
  Included in other comprehensive income  10,341   (172)   1,782   (2,273)   827
 Purchases(1)  68,275   337   2,012   --   --
 Sales(1)  (17,876)   (8,219)   (7,902)   (1,552)   --
 Settlements(1)  (32,497)   (1,902)   (3,238)   (58)   (23)
 Transfers into Level 3  --   7,176   --   --   8,438
 Transfers out of Level 3  (11,281)   (1,937)   (11,017)   --   --
Fair value, end of period$ 994,014 $ 49,591 $ 128,358 $ 115,733 $ 14,486
                  
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period              
  Included in earnings, net:              
   Investment income, net of related expenses$ 84 $ 148 $ 151 $ 545 $ 9
   Investment related gains (losses), net  (380)   (161)   --   --   --
   Claims & other policy benefits  --   --   --   --   --
   Interest credited  --   --   --   --   --
   Policy acquisition costs and other insurance expenses  --   --   --   --   --

For the three months ended June 30, 2012 (continued):Funds withheld   Reinsurance  Interest sensitive
    at interest- Other invested ceded receivable-  contract liabilities
    embedded  assets- other embedded embedded
    derivative equity securities derivative derivative
Fair value, beginning of period$ (370,884) $ 11,827 $ 3,514 $ (903,282)
 Total gains/losses (realized/unrealized)           
  Included in earnings, net:           
   Investment income, net of related expenses  --   --   --   --
   Investment related gains (losses), net  (4,453)   1,098   --   (74,929)
   Claims & other policy benefits  --   --   --   (1,721)
   Interest credited  --   --   --   27,825
   Policy acquisition costs and other insurance expenses  --   --   1,003   --
  Included in other comprehensive income  --   505   --   --
 Purchases(1)  --   108   --   (16,107)
 Sales(1)  --   (3,788)   --   --
 Settlements(1)  --   --   (101)   29,287
 Transfers into Level 3  --   --   --   --
 Transfers out of Level 3  --   (6,523)   --   --
Fair value, end of period$ (375,337) $ 3,227 $ 4,416 $ (938,927)
               
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period           
  Included in earnings, net:           
   Investment income, net of related expenses$ -- $ -- $ -- $ --
   Investment related gains (losses), net  (4,452)   (183)   --   (76,737)
   Claims & other policy benefits  --   --   --   (1,959)
   Interest credited  --   --   --   (1,288)
   Policy acquisition costs and other insurance expenses  --   --   1,143   --
               
(1)The amount reported within purchases, sales and settlements is the purchase price (for purchases) and the sales/settlement proceeds (for sales and settlements) based upon the actual date purchased or sold/settled. Items purchased and sold/settled in the same period are excluded from the rollforward. The Company had no issuances during the period.
              
              

For the six months ended June 30, 2012:Fixed maturity securities - available-for-sale
        Residential      Commercial  State
        mortgage-     mortgage- and political
    Corporate   backed   Asset-backed  backed subdivision
    securities  securities  securities  securities securities
Fair value, beginning of period$ 974,169 $ 81,655 $ 193,492 $ 115,976 $ 10,373
 Total gains/losses (realized/unrealized)              
  Included in earnings, net:              
   Investment income, net of related expenses  107   298   444   1,133   4
   Investment related gains (losses), net  (1,280)   (36)   (506)   (11,682)   (8)
   Claims & other policy benefits  --   --   --   --   --
   Interest credited  --   --   --   --   --
   Policy acquisition costs and other insurance expenses  --   --   --   --   --
  Included in other comprehensive income  9,659   1,408   8,477   11,248   1,233
 Purchases(1)  89,435   582   2,012   --   --
 Sales(1)  (27,285)   (16,224)   (7,902)   (1,552)   --
 Settlements(1)  (53,371)   (3,702)   (7,103)   (58)   (46)
 Transfers into Level 3  17,445   7,176   1,080   10,846   8,438
 Transfers out of Level 3  (14,865)   (21,566)   (61,636)   (10,178)   (5,508)
Fair value, end of period$ 994,014 $ 49,591 $ 128,358 $ 115,733 $ 14,486
                  
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period              
  Included in earnings, net:              
   Investment income, net of related expenses$ 114 $ 255 $ 400 $ 1,133 $ 4
   Investment related gains (losses), net  (1,106)   (269)   (607)   (12,075)   --
   Claims & other policy benefits  --   --   --   --   --
   Interest credited  --   --   --   --   --
   Policy acquisition costs and other insurance expenses  --   --   --   --   --

For the six months ended June 30, 2012 (continued):Funds withheld   Reinsurance  Interest sensitive
    at interest - Other invested ceded receivable-  contract liabilities
    embedded assets- other embedded embedded
    deritvatives equity securities derivative derivative
Fair value, beginning of period$ (361,456) $ 11,489 $ 4,945 $ (1,028,241)
 Total gains/losses (realized/unrealized)           
  Included in earnings, net:           
   Investment income, net of related expenses  --   --   --   --
   Investment related gains (losses), net  (13,881)   1,098   --   71,446
   Claims & other policy benefits  --   --   --   557
   Interest credited  --   --   --   6,632
   Policy acquisition costs and other insurance expenses  --   --   (325)   --
  Included in other comprehensive income  --   843   --   --
 Purchases(1)  --   108   --   (39,697)
 Sales(1)  --   (3,788)   --   --
 Settlements(1)  --   --   (204)   50,376
 Transfers into Level 3  --   --   --   --
 Transfers out of Level 3  --   (6,523)   --   --
Fair value, end of period$ (375,337) $ 3,227 $ 4,416 $ (938,927)
               
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period           
  Included in earnings, net:           
   Investment income, net of related expenses$ -- $ -- $ -- $ --
   Investment related gains (losses), net  (13,881)   (183)   --   67,887
   Claims & other policy benefits  --   --   --   79
   Interest credited  --   --   --   (43,395)
   Policy acquisition costs and other insurance expenses  --   --   (46)   --
               
(1)The amount reported within purchases, sales and settlements is the purchase price (for purchases) and the sales/settlement proceeds (for sales and settlements) based upon the actual date purchased or sold/settled. Items purchased and sold/settled in the same period are excluded from the rollforward. The Company had no issuances during the period.

For the three months ended June 30, 2011:Fixed maturity securities - available-for-sale
        Residential      Commercial
        mortgage-     mortgage-
    Corporate   backed   Asset-backed  backed
    securities  securities  securities  securities
Fair value, beginning of period$ 940,470 $ 138,568 $ 202,246 $ 203,394
 Total gains/losses (realized/unrealized)           
  Included in earnings, net:           
   Investment income, net of related expenses  75   233   322   611
   Investment related gains (losses), net  321   (45)   (3,671)   (2,242)
   Claims & other policy benefits  --   --   --   --
   Interest credited  --   --   --   --
   Policy acquisition costs and other insurance expenses  --   --   --   --
  Included in other comprehensive income  9,228   (2,910)   3,182   (5,825)
 Purchases (1)  97,606   5,329   25,007   5,069
 Sales(1)  (19,563)   (6,635)   (3,998)   --
 Settlements(1)  (25,050)   (4,205)   (8,693)   (3,080)
 Transfers into Level 3  26,268   --   10,175   11,665
 Transfers out of Level 3  (51,795)   (26,905)   (35,797)   (58,827)
Fair value, end of period$ 977,560 $ 103,430 $ 188,773 $ 150,765
               
               
               
               
               
               
               
               
               
For the three months ended June 30, 2011 (continued):Fixed maturity securities - available-for-sale
        Residential      Commercial
        mortgage-     mortgage-
    Corporate   backed   Asset-backed  backed
    securities  securities  securities  securities
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period           
  Included in earnings, net:           
   Investment income, net of related expenses$ 56 $ 216 $ 331 $ 601
   Investment related gains (losses), net  --   (44)   (2,998)   (2,254)
   Claims & other policy benefits  --   --   --   --
   Interest credited  --   --   --   --
   Policy acquisition costs and other insurance expenses  --   --   --   --

For the three months ended June 30, 2011 (continued):Fixed maturity securities -    
    available-for-sale   
      Other foreign  
    State government, Funds withheld
    and political  supranational and  at interest-
    subdivision foreign government- embedded
    securities sponsored enterprises derivative
Fair value, beginning of period$ 45,081 $ 6,495 $ (183,685)
 Total gains/losses (realized/unrealized)        
  Included in earnings, net:        
   Investment income, net of related expenses  2   --   --
   Investment related gains (losses), net  (3)   --   10,525
   Claims & other policy benefits  --   --   --
   Interest credited  --   --   --
   Policy acquisition costs and other insurance expenses  --   --   --
  Included in other comprehensive income  939   110   --
 Purchases(1)  --   --   --
 Sales(1)  --   --   --
 Settlements(1)  (22)   --   --
 Transfers into Level 3  14,260   --   --
 Transfers out of Level 3  (37,325)   (2,531)   --
Fair value, end of period$ 22,932 $ 4,074 $ (173,160)
            
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period        
  Included in earnings, net:        
   Investment income, net of related expenses$ 2 $ -- $ --
   Investment related gains (losses), net  --   --   10,525
   Claims & other policy benefits  --   --   --
   Interest credited  --   --   --
   Policy acquisition costs and other insurance expenses  --   --   --

For the three months ended June 30, 2011 (continued):Other invested   Reinsurance  Interest sensitive
    assets- non- Other invested ceded receivable-  contract liabilities
    redeemable assets- other embedded embedded
    preferred stock equity securities derivative derivative
Fair value, beginning of period$ 420 $ 14,134 $ 82,482 $ (739,017)
 Total gains/losses (realized/unrealized)           
  Included in earnings, net:           
   Investment income, net of related expenses  --   --   --   --
   Investment related gains (losses), net  --   3,504   --   (25,860)
   Claims & other policy benefits  --   --   --   (603)
   Interest credited  --   --   --   (36,267)
   Policy acquisition costs and other insurance expenses  --   --   4,473   --
  Included in other comprehensive income  --   (2,704)   --   --
 Purchases(1)  --   --   1,831   (21,302)
 Sales(1)  (420)   (3,933)   --   --
 Settlements(1)  --   --   (2,757)   18,878
 Transfers into Level 3  --   --   --   --
 Transfers out of Level 3  --   --   --   --
Fair value, end of period$ -- $ 11,001 $ 86,029 $ (804,171)
               
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period           
  Included in earnings, net:           
   Investment income, net of related expenses$ -- $ -- $ -- $ --
   Investment related gains (losses), net  --   --   --   (25,861)
   Claims & other policy benefits  --   --   --   (1,370)
   Interest credited  --   --   --   (55,145)
   Policy acquisition costs and other insurance expenses  --   --   10,645   --
               
(1)The amount reported within purchases, sales and settlements is the purchase price (for purchases) and the sales/settlement proceeds (for sales and settlements) based upon the actual date purchased or sold/settled. Items purchased and sold/settled in the same period are excluded from the rollforward. The Company had no issuances during the period.
              
              

For the six months ended June 30, 2011:Fixed maturity securities - available-for-sale
        Residential      Commercial
        mortgage-     mortgage-
    Corporate   backed   Asset-backed  backed
    securities  securities  securities  securities
Fair value, beginning of period$ 872,179 $ 183,291 $ 228,558 $ 147,556
 Total gains/losses (realized/unrealized)           
  Included in earnings, net:           
   Investment income, net of related expenses  162   493   904   1,169
   Investment related gains (losses), net  741   (401)   (2,827)   (2,732)
   Claims & other policy benefits  --   --   --   --
   Interest credited  --   --   --   --
   Policy acquisition costs and other insurance expenses  --   --   --   --
  Included in other comprehensive income  9,450   4,484   7,413   27,316
 Purchases(1)  197,807   5,782   29,880   7,683
 Sales(1)  (21,071)   (20,701)   (22,298)   --
 Settlements(1)  (75,730)   (12,365)   (16,841)   (3,410)
 Transfers into Level 3  60,679   5,001   21,501   66,854
 Transfers out of Level 3  (66,657)   (62,154)   (57,517)   (93,671)
Fair value, end of period$ 977,560 $ 103,430 $ 188,773 $ 150,765
               
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period           
  Included in earnings, net:           
   Investment income, net of related expenses$ 130 $ 474 $ 838 $ 1,155
   Investment related gains (losses), net  (514)   (44)   (3,551)   (2,743)
   Claims & other policy benefits  --   --   --   --
   Interest credited  --   --   --   --
   Policy acquisition costs and other insurance expenses  --   --   --   --

For the six months ended June 30, 2011 (continued):Fixed maturity securities -       
    available-for-sale      
    State   Funds withheld   
    and political  Other foreign at interest-   
    subdivision government embedded  
    securities securities derivative  
Fair value, beginning of period$ 6,983 $ 6,736 $ (274,220)   
 Total gains/losses (realized/unrealized)           
  Included in earnings, net:           
   Investment income, net of related expenses  370   1   --   
   Investment related gains (losses), net  (8)   --   101,060   
   Claims & other policy benefits  --   --   --   
   Interest credited  --   --   --   
   Policy acquisition costs and other insurance expenses  --   --   --   
  Included in other comprehensive income  3,615   8   --   
 Purchases(1)  871   --   --   
 Sales(1)  --   (161)   --   
 Settlements(1)  (43)   --   --   
 Transfers into Level 3  48,469   21   --   
 Transfers out of Level 3  (37,325)   (2,531)   --   
Fair value, end of period$ 22,932 $ 4,074 $ (173,160)   
               
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period           
  Included in earnings, net:           
   Investment income, net of related expenses$ 370 $ (36) $ --   
   Investment related gains (losses), net  --   --   101,060   
   Claims & other policy benefits  --   --   --   
   Interest credited  --   --   --   
   Policy acquisition costs and other insurance expenses  --   --   --   

For the six months ended June 30, 2011 (continued):Other invested   Reinsurance  Interest sensitive
    assets- non- Other invested ceded receivable-  contract liabilities
    redeemable assets- other embedded embedded
    preferred stock equity securities derivative derivative
Fair value, beginning of period$ 420 $ 16,416 $ 75,431 $ (721,485)
 Total gains/losses (realized/unrealized)           
  Included in earnings, net:           
   Investment income, net of related expenses  --   --   --   --
   Investment related gains (losses), net  --   3,504   --   6,794
   Claims & other policy benefits  --   --   --   317
   Interest credited  --   --   --   (86,116)
   Policy acquisition costs and other insurance expenses  --   --   12,312   --
  Included in other comprehensive income  --   (4,987)   --   --
 Purchases(1)  --   --   4,264   (41,220)
 Sales(1)  (420)   (3,932)   --   --
 Settlements(1)  --   --   (5,978)   37,539
 Transfers into Level 3  --   --   --   --
 Transfers out of Level 3  --   --   --   --
Fair value, end of period$ -- $ 11,001 $ 86,029 $ (804,171)
               
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period           
  Included in earnings, net:           
   Investment income, net of related expenses$ -- $ -- $ -- $ --
   Investment related gains (losses), net  --   --   --   6,794
   Claims & other policy benefits  --   --   --   (16)
   Interest credited  --   --   --   (123,655)
   Policy acquisition costs and other insurance expenses  --   --   18,485   --
               
(1)The amount reported within purchases, sales and settlements is the purchase price (for purchases) and the sales/settlement proceeds (for sales and settlements) based upon the actual date purchased or sold/settled. Items purchased and sold/settled in the same period are excluded from the rollforward. The Company had no issuances during the period.
              
              
Financial Instruments Carrying Amounts And Estimated Fair Value [Text Block]
June 30, 2012    Estimated Fair Fair Value Measurement Using:
    Carrying Value  Value  Level 1 Level 2 Level 3
Assets:              
 Mortgage loans on real estate$ 1,157,049 $ 1,254,696 $ -- $ -- $ 1,254,696
 Policy loans  1,250,238   1,250,238   --   1,250,238   --
 Funds withheld at interest(1)  5,457,888   6,229,065   --   --   6,229,065
 Cash and cash equivalents(2)  578,746   578,746   578,746   --   --
 Short-term investments(2)  46,277   46,277   46,277   --   --
 Investment receivable  5,406,898   5,457,290   753,221   3,172,107   1,531,962
 Other invested assets(2)  497,238   508,730   --   18,900   489,830
 Accrued investment income  182,586   182,586   --   182,586   --
Liabilities:              
 Interest-sensitive contract liabilities(1)$ 11,486,794 $ 11,553,027 $ -- $ -- $ 11,553,027
 Long-term debt  1,414,969   1,481,569   --   --   1,481,569
 Collateral finance facility  651,936   423,475   --   --   423,475

December 31, 2011:    Estimated Fair         
    Carrying Value Value         
Assets:              
 Mortgage loans on real estate$ 991,731 $ 1,081,924         
 Policy loans  1,260,400   1,260,400         
 Funds withheld at interest(1)  5,410,424   6,041,984         
 Cash and cash equivalents(2)  458,348   458,348         
 Short-term investments(2)  41,895   41,895         
 Other invested assets(2)  500,681   503,293         
 Accrued investment income  144,334   144,334         
Liabilities:              
 Interest-sensitive contract liabilities(1)$ 6,203,001 $ 6,307,779         
 Long-term debt  1,414,688   1,462,329         
 Collateral finance facility  652,032   390,900         
                 
(1)Carrying values presented herein differ from those presented in the condensed consolidated balance sheets because certain items within the respective financial statement caption are embedded derivatives and are measured at fair value on a recurring basis.
                
(2)Carrying values presented herein differ from those presented in the condensed consolidated balance sheets because certain items within the respective financial statement caption are measured at fair value on a recurring basis.