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Investments (Tables) | 9 Months Ended
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Sep. 30, 2012
Investments Abstract |
Investment Income |
Investment Income, Net of Related Expenses
Major categories of investment income, net of related expenses consist of the following (dollars in thousands):
| Three months ended |  |  | Nine months ended
| September 30, |  |  | September 30,
| 2012 |  | 2011 |  |  | 2012 |  | 2011
Fixed maturity securities available-for-sale | $ | 221,212 |  | $ | 190,990 |  |  | $ | 633,110 |  | $ | 566,581
Mortgage loans on real estate |  | 26,938 |  |  | 14,474 |  |  |  | 67,258 |  |  | 41,801
Policy loans |  | 16,519 |  |  | 16,454 |  |  |  | 49,637 |  |  | 49,549
Funds withheld at interest |  | 127,855 |  |  | 41,267 |  |  |  | 305,861 |  |  | 306,028
Short-term investments |  | 960 |  |  | 393 |  |  |  | 3,027 |  |  | 2,201
Other invested assets |  | 13,117 |  |  | 11,470 |  |  |  | 35,803 |  |  | 31,680
Investment revenue |  | 406,601 |  |  | 275,048 |  |  |  | 1,094,696 |  |  | 997,840
Investment expense |  | (9,820) |  |  | (6,838) |  |  |  | (28,641) |  |  | (21,154)
Investment income, net of related expenses | $ | 396,781 |  | $ | 268,210 |  |  | $ | 1,066,055 |  | $ | 976,686
Gain Loss On Investments |
Investment Related Gains (Losses), Net |  |  |  |  |  |  |  |  |  |
Investment related gains (losses), net, consist of the following (dollars in thousands): |  |  |  |  |  |  |
|  |  | Three months ended |  |  | Nine months ended
|  |  | September 30, |  |  | September 30,
|  |  | 2012 |  | 2011 |  |  | 2012 |  | 2011
Fixed maturity and equity securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |
| Other-than-temporary impairment losses on fixed maturities | $ | (1,996) |  | $ | (11,911) |  |  | $ | (11,562) |  | $ | (19,049)
| Portion of loss recognized in accumulated other |  |  |  |  |  |  |  |  |  |  |  |
|  | comprehensive income (before taxes) |  | (559) |  |  | 3,089 |  |  |  | (7,618) |  |  | 3,381
| Net other-than-temporary impairment losses on fixed |  |  |  |  |  |  |  |  |  |  |  |
|  | maturities recognized in earnings |  | (2,555) |  |  | (8,822) |  |  |  | (19,180) |  |  | (15,668)
| Impairment losses on equity securities |  | -- |  |  | -- |  |  |  | (3,025) |  |  | (3,680)
| Gain on investment activity |  | 53,173 |  |  | 34,840 |  |  |  | 102,078 |  |  | 92,423
| Loss on investment activity |  | (6,668) |  |  | (7,182) |  |  |  | (23,090) |  |  | (20,749)
Other impairment losses and change in mortgage loan provision |  | (10,301) |  |  | (2,370) |  |  |  | (14,382) |  |  | (4,980)
Derivatives and other, net |  | 42,404 |  |  | (156,066) |  |  |  | 100,973 |  |  | (35,938)
Total investment related gains (losses), net | $ | 76,053 |  | $ | (139,600) |  |  | $ | 143,374 |  | $ | 11,408
RollForward Of Cumulative Credit Loss Component Of OTTI Income Loss |
| Three months ended September 30,
| 2012 |  | 2011
Balance, beginning of period | $ | 45,903 |  | $ | 52,484
Initial impairments - credit loss OTTI recognized on securities not previously impaired |  | -- |  |  | 5,259
Additional impairments - credit loss OTTI recognized on securities previously impaired |  | 1,306 |  |  | 2,432
Credit loss OTTI previously recognized on securities impaired to fair value during the period |  | (2,622) |  |  | --
Credit loss OTTI previously recognized on securities which matured, paid down, prepaid or were sold during the period |  | (20,725) |  |  | (752)
Balance, end of period | $ | 23,862 |  | $ | 59,423
| Nine months ended September 30,
| 2012 |  | 2011
Balance, beginning of period | $ | 63,947 |  | $ | 47,291
Initial impairments - credit loss OTTI recognized on securities not previously impaired |  | 1,962 |  |  | 6,731
Additional impairments - credit loss OTTI recognized on securities previously impaired |  | 10,187 |  |  | 6,871
Credit loss OTTI previously recognized on securities impaired to fair value during the period |  | (22,291) |  |  | --
Credit loss OTTI previously recognized on securities which matured, paid down, prepaid or were sold during the period |  | (29,943) |  |  | (1,470)
Balance, end of period | $ | 23,862 |  | $ | 59,423
Available For Sale Securities |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Other-than-
|  |  |  |  |  |  |  |  |  |  |  | Estimated |  |  |  |  | temporary
September 30, 2012: | Amortized |  | Unrealized |  | Unrealized |  | Fair |  | % of |  | impairments
|  |  | Cost |  | Gains |  | Losses |  | Value |  | Total |  | in AOCI
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Corporate securities | $ | 10,885,071 |  | $ | 1,059,275 |  | $ | 44,624 |  | $ | 11,899,722 |  | 55.0 | % |  | $ | --
| Canadian and Canadian provincial |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | governments |  | 2,653,761 |  |  | 1,438,124 |  |  | 2 |  |  | 4,091,883 |  | 18.9 |  |  |  | --
| Residential mortgage-backed securities |  | 980,655 |  |  | 80,614 |  |  | 5,461 |  |  | 1,055,808 |  | 4.9 |  |  |  | (477)
| Asset-backed securities |  | 588,851 |  |  | 18,050 |  |  | 34,201 |  |  | 572,700 |  | 2.6 |  |  |  | (2,295)
| Commercial mortgage-backed securities |  | 1,663,493 |  |  | 137,153 |  |  | 60,255 |  |  | 1,740,391 |  | 8.0 |  |  |  | (6,111)
| U.S. government and agencies |  | 251,417 |  |  | 33,458 |  |  | 18 |  |  | 284,857 |  | 1.3 |  |  |  | --
| State and political subdivisions |  | 254,845 |  |  | 38,784 |  |  | 6,212 |  |  | 287,417 |  | 1.3 |  |  |  | --
| Other foreign government, supranational and |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | foreign government-sponsored enterprises |  | 1,627,190 |  |  | 100,539 |  |  | 2,093 |  |  | 1,725,636 |  | 8.0 |  |  |  | --
|  | Total fixed maturity securities | $ | 18,905,283 |  | $ | 2,905,997 |  | $ | 152,866 |  | $ | 21,658,414 |  | 100.0 | % |  | $ | (8,883)
Non-redeemable preferred stock | $ | 69,182 |  | $ | 6,332 |  | $ | 834 |  | $ | 74,680 |  | 35.7 | % |  |  |
Other equity securities |  | 133,037 |  |  | 1,555 |  |  | - |  |  | 134,592 |  | 64.3 |  |  |  |
|  | Total equity securities | $ | 202,219 |  | $ | 7,887 |  | $ | 834 |  | $ | 209,272 |  | 100.0 | % |  |  |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Other-than-
|  |  |  |  |  |  |  |  |  |  |  | Estimated |  |  |  |  | temporary
December 31, 2011: | Amortized |  | Unrealized |  | Unrealized |  | Fair |  | % of |  | impairments
|  |  | Cost |  | Gains |  | Losses |  | Value |  | Total |  | in AOCI
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Corporate securities | $ | 6,931,958 |  | $ | 654,519 |  | $ | 125,371 |  | $ | 7,461,106 |  | 46.0 | % |  | $ | --
| Canadian and Canadian provincial |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | governments |  | 2,507,802 |  |  | 1,362,160 |  |  | 29 |  |  | 3,869,933 |  | 23.9 |  |  |  | --
| Residential mortgage-backed securities |  | 1,167,265 |  |  | 76,393 |  |  | 16,424 |  |  | 1,227,234 |  | 7.6 |  |  |  | (1,042)
| Asset-backed securities |  | 443,974 |  |  | 11,692 |  |  | 53,675 |  |  | 401,991 |  | 2.5 |  |  |  | (5,256)
| Commercial mortgage-backed securities |  | 1,233,958 |  |  | 87,750 |  |  | 79,489 |  |  | 1,242,219 |  | 7.7 |  |  |  | (12,225)
| U.S. government and agencies |  | 341,087 |  |  | 32,976 |  |  | 61 |  |  | 374,002 |  | 2.3 |  |  |  | --
| State and political subdivisions |  | 184,308 |  |  | 24,419 |  |  | 3,341 |  |  | 205,386 |  | 1.3 |  |  |  | --
| Other foreign government, supranational and |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | foreign government-sponsored enterprises |  | 1,372,528 |  |  | 50,127 |  |  | 3,576 |  |  | 1,419,079 |  | 8.7 |  |  |  | --
|  | Total fixed maturity securities | $ | 14,182,880 |  | $ | 2,300,036 |  | $ | 281,966 |  | $ | 16,200,950 |  | 100.0 | % |  | $ | (18,523)
Non-redeemable preferred stock | $ | 82,488 |  | $ | 4,677 |  | $ | 8,982 |  | $ | 78,183 |  | 68.6 | % |  |  |
Other equity securities |  | 35,352 |  |  | 1,903 |  |  | 1,538 |  |  | 35,717 |  | 31.4 |  |  |  |
|  | Total equity securities | $ | 117,840 |  | $ | 6,580 |  | $ | 10,520 |  | $ | 113,900 |  | 100.0 | % |  |  |
Investments Classified By Contractual Maturity Date |
|  |  | Amortized |  | Fair |
|  |  | Cost |  | Value |
Available-for-sale: |  |  |  |  |  |
| Due in one year or less | $ | 247,507 |  | $ | 251,672 |
| Due after one year through five years |  | 3,767,244 |  |  | 3,950,306 |
| Due after five year through ten years |  | 6,172,841 |  |  | 6,757,674 |
| Due after ten years |  | 5,484,692 |  |  | 7,329,863 |
| Asset and mortgage-backed securities |  | 3,232,999 |  |  | 3,368,899 |
|  | Total | $ | 18,905,283 |  | $ | 21,658,414 |
Fixed Maturity Holdings Industry Types Weighted Average Credit Ratings |
September 30, 2012: |  |  |  |  | Estimated |  |  |  |  |  |
|  |  | Amortized Cost |  |  | Fair Value |  | % of Total |  |  |  |
Finance | $ | 3,551,382 |  | $ | 3,802,951 |  | 32.0 | % |  |  |
Industrial |  | 5,583,541 |  |  | 6,146,069 |  | 51.6 |  |  |  |
Utility |  | 1,715,512 |  |  | 1,914,809 |  | 16.1 |  |  |  |
Other |  | 34,636 |  |  | 35,893 |  | 0.3 |  |  |  |
| Total | $ | 10,885,071 |  | $ | 11,899,722 |  | 100.0 | % |  |  |
December 31, 2011: |  |  |  |  | Estimated |  |  |  |  |  |
|  |  | Amortized Cost |  |  | Fair Value |  | % of Total |  |  |  |
Finance | $ | 2,411,175 |  | $ | 2,442,149 |  | 32.7 | % |  |  |
Industrial |  | 3,402,099 |  |  | 3,760,187 |  | 50.4 |  |  |  |
Utility |  | 1,115,384 |  |  | 1,255,090 |  | 16.9 |  |  |  |
Other |  | 3,300 |  |  | 3,680 |  | - |  |  |  |
| Total | $ | 6,931,958 |  | $ | 7,461,106 |  | 100.0 | % |  |  |
Sovereign Fixed Maturity Holdings By Country [Table Text Block] |
September 30, 2012: |  |  |  |  | Estimated |  |  |  |
|  |  |  | Amortized Cost |  |  | Fair Value |  | % of Total |  |
Australia | $ | 454,131 |  | $ | 470,628 |  | 33.3 | % |
Japan |  | 221,977 |  |  | 228,478 |  | 16.2 |  |
United Kingdom |  | 129,960 |  |  | 140,478 |  | 10.0 |  |
Cayman Islands |  | 69,333 |  |  | 76,661 |  | 5.4 |  |
South Africa |  | 63,037 |  |  | 67,240 |  | 4.8 |  |
New Zealand |  | 54,077 |  |  | 54,716 |  | 3.9 |  |
Germany |  | 42,360 |  |  | 45,229 |  | 3.2 |  |
South Korea |  | 41,396 |  |  | 44,619 |  | 3.2 |  |
France |  | 38,694 |  |  | 41,945 |  | 3.0 |  |
Other |  | 215,586 |  |  | 240,896 |  | 17.0 |  |
|  | Total | $ | 1,330,551 |  | $ | 1,410,890 |  | 100.0 | % |
December 31, 2011: |  |  |  |  | Estimated |  |  |  |
|  |  |  | Amortized Cost |  |  | Fair Value |  | % of Total |  |
Australia | $ | 437,713 |  | $ | 446,694 |  | 39.1 | % |
Japan |  | 214,994 |  |  | 219,276 |  | 19.2 |  |
United Kingdom |  | 118,618 |  |  | 130,106 |  | 11.4 |  |
Germany |  | 72,926 |  |  | 75,741 |  | 6.6 |  |
New Zealand |  | 51,547 |  |  | 51,544 |  | 4.5 |  |
South Africa |  | 37,624 |  |  | 38,528 |  | 3.4 |  |
South Korea |  | 30,592 |  |  | 32,025 |  | 2.8 |  |
Other |  | 139,927 |  |  | 148,792 |  | 13.0 |  |
|  | Total | $ | 1,103,941 |  | $ | 1,142,706 |  | 100.0 | % |
Non Sovereign Fixed Maturity And Equity Securities In European Peripheral Region [Table Text Block] |
September 30, 2012: |  |  |  |  | Estimated |  |  |  |
|  |  |  |  | Amortized Cost |  |  | Fair Value |  | % of Total |  |
Financial institutions: |  |  |  |  |  |  |  |  |
| Ireland | $ | 3,592 |  | $ | 4,057 |  | 4.4 | % |
| Spain |  | 23,347 |  |  | 23,215 |  | 25.0 |  |
|  | Total financial institutions |  | 26,939 |  |  | 27,272 |  | 29.4 |  |
Other: |  |  |  |  |  |  |  |  |
| Ireland |  | 26,346 |  |  | 27,528 |  | 29.7 |  |
| Italy |  | 6,393 |  |  | 6,394 |  | 6.9 |  |
| Spain |  | 31,694 |  |  | 31,525 |  | 34.0 |  |
|  | Total other |  | 64,433 |  |  | 65,447 |  | 70.6 |  |
|  |  | Total | $ | 91,372 |  | $ | 92,719 |  | 100.0 | % |
December 31, 2011: |  |  |  |  | Estimated |  |  |  |
|  |  |  |  | Amortized Cost |  |  | Fair Value |  | % of Total |  |
Financial institutions: |  |  |  |  |  |  |  |  |
| Ireland | $ | 4,084 |  | $ | 4,397 |  | 5.9 | % |
| Spain |  | 25,565 |  |  | 20,378 |  | 27.6 |  |
|  | Total financial institutions |  | 29,649 |  |  | 24,775 |  | 33.5 |  |
Other: |  |  |  |  |  |  |  |  |
| Ireland |  | 12,474 |  |  | 13,149 |  | 17.8 |  |
| Italy |  | 2,898 |  |  | 2,808 |  | 3.8 |  |
| Spain |  | 34,459 |  |  | 33,137 |  | 44.9 |  |
|  | Total other |  | 49,831 |  |  | 49,094 |  | 66.5 |  |
|  |  | Total | $ | 79,480 |  | $ | 73,869 |  | 100.0 | % |
Investments In Debt And Equity Securities Gross Unrealized Losses Disclosures |
|  | September 30, 2012 |  | December 31, 2011
|  | Gross |  |  |  |  | Gross |  |  |
|  | Unrealized |  |  |  |  | Unrealized |  |  |
|  | Losses |  | % of Total |  | Losses |  | % of Total
Less than 20% | $ | 55,930 |  | 36.4 | % |  | $ | 131,155 |  | 44.8 | %
20% or more for less than six months |  | 509 |  | 0.3 |  |  |  | 51,503 |  | 17.6 |
20% or more for six months or greater |  | 97,261 |  | 63.3 |  |  |  | 109,828 |  | 37.6 |
| Total | $ | 153,700 |  | 100.0 | % |  | $ | 292,486 |  | 100.0 | %
Fair Value And Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosures |
|  |  | Less than 12 months |  | 12 months or greater |  | Total
|  |  |  |  |  | Gross |  |  |  |  | Gross |  |  |  |  | Gross
September 30, 2012: | Estimated |  | Unrealized |  | Estimated |  | Unrealized |  | Estimated |  | Unrealized
|  |  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses
Investment grade securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Corporate securities | $ | 436,908 |  | $ | 7,947 |  | $ | 168,366 |  | $ | 26,006 |  | $ | 605,274 |  | $ | 33,953
| Canadian and Canadian provincial |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | governments |  | 589 |  |  | 2 |  |  | -- |  |  | -- |  |  | 589 |  |  | 2
| Residential mortgage-backed securities |  | 21,365 |  |  | 113 |  |  | 21,236 |  |  | 4,763 |  |  | 42,601 |  |  | 4,876
| Asset-backed securities |  | 55,260 |  |  | 1,286 |  |  | 101,691 |  |  | 20,960 |  |  | 156,951 |  |  | 22,246
| Commercial mortgage-backed securities |  | 117,736 |  |  | 1,350 |  |  | 40,110 |  |  | 9,546 |  |  | 157,846 |  |  | 10,896
| U.S. government and agencies |  | 6,715 |  |  | 18 |  |  | -- |  |  | -- |  |  | 6,715 |  |  | 18
| State and political subdivisions |  | 2,885 |  |  | 1,272 |  |  | 18,409 |  |  | 4,940 |  |  | 21,294 |  |  | 6,212
| Other foreign government, supranational and |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | foreign government-sponsored enterprises |  | 53,671 |  |  | 1,068 |  |  | 16,589 |  |  | 1,025 |  |  | 70,260 |  |  | 2,093
|  | Total investment grade securities |  | 695,129 |  |  | 13,056 |  |  | 366,401 |  |  | 67,240 |  |  | 1,061,530 |  |  | 80,296
Non-investment grade securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Corporate securities |  | 133,893 |  |  | 4,330 |  |  | 63,817 |  |  | 6,341 |  |  | 197,710 |  |  | 10,671
| Residential mortgage-backed securities |  | 7,774 |  |  | 55 |  |  | 4,304 |  |  | 530 |  |  | 12,078 |  |  | 585
| Asset-backed securities |  | -- |  |  | -- |  |  | 18,244 |  |  | 11,955 |  |  | 18,244 |  |  | 11,955
| Commercial mortgage-backed securities |  | 12,157 |  |  | 492 |  |  | 60,373 |  |  | 48,867 |  |  | 72,530 |  |  | 49,359
|  | Total non-investment grade securities |  | 153,824 |  |  | 4,877 |  |  | 146,738 |  |  | 67,693 |  |  | 300,562 |  |  | 72,570
|  | Total fixed maturity securities | $ | 848,953 |  | $ | 17,933 |  | $ | 513,139 |  | $ | 134,933 |  | $ | 1,362,092 |  | $ | 152,866
| Non-redeemable preferred stock | $ | 734 |  | $ | 6 |  | $ | 6,744 |  | $ | 828 |  | $ | 7,478 |  | $ | 834
|  | Total equity securities | $ | 734 |  | $ | 6 |  | $ | 6,744 |  | $ | 828 |  | $ | 7,478 |  | $ | 834
|  |  | Less than 12 months |  | 12 months or greater |  | Total
|  |  |  |  |  | Gross |  |  |  |  | Gross |  |  |  |  | Gross
December 31, 2011: | Estimated |  | Unrealized |  | Estimated |  | Unrealized |  | Estimated |  | Unrealized
|  |  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses
Investment grade securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Corporate securities | $ | 790,758 |  | $ | 40,180 |  | $ | 286,244 |  | $ | 63,117 |  | $ | 1,077,002 |  | $ | 103,297
| Canadian and Canadian provincial |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | governments |  | 3,094 |  |  | 29 |  |  | -- |  |  | -- |  |  | 3,094 |  |  | 29
| Residential mortgage-backed securities |  | 128,622 |  |  | 3,549 |  |  | 58,388 |  |  | 10,382 |  |  | 187,010 |  |  | 13,931
| Asset-backed securities |  | 101,263 |  |  | 3,592 |  |  | 93,910 |  |  | 29,036 |  |  | 195,173 |  |  | 32,628
| Commercial mortgage-backed securities |  | 109,455 |  |  | 3,538 |  |  | 58,979 |  |  | 22,001 |  |  | 168,434 |  |  | 25,539
| U.S. government and agencies |  | 1,764 |  |  | 61 |  |  | -- |  |  | -- |  |  | 1,764 |  |  | 61
| State and political subdivisions |  | 21,045 |  |  | 1,845 |  |  | 12,273 |  |  | 1,268 |  |  | 33,318 |  |  | 3,113
| Other foreign government, supranational and |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | foreign government-sponsored enterprises |  | 148,416 |  |  | 1,085 |  |  | 16,588 |  |  | 2,491 |  |  | 165,004 |  |  | 3,576
|  | Total investment grade securities |  | 1,304,417 |  |  | 53,879 |  |  | 526,382 |  |  | 128,295 |  |  | 1,830,799 |  |  | 182,174
Non-investment grade securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Corporate securities |  | 212,795 |  |  | 10,852 |  |  | 47,310 |  |  | 11,222 |  |  | 260,105 |  |  | 22,074
| Residential mortgage-backed securities |  | 23,199 |  |  | 712 |  |  | 10,459 |  |  | 1,781 |  |  | 33,658 |  |  | 2,493
| Asset-backed securities |  | 2,363 |  |  | 940 |  |  | 21,275 |  |  | 20,107 |  |  | 23,638 |  |  | 21,047
| Commercial mortgage-backed securities |  | 34,918 |  |  | 7,220 |  |  | 62,357 |  |  | 46,730 |  |  | 97,275 |  |  | 53,950
| State and political subdivisions |  | 4,000 |  |  | 228 |  |  | -- |  |  | -- |  |  | 4,000 |  |  | 228
|  | Total non-investment grade securities |  | 277,275 |  |  | 19,952 |  |  | 141,401 |  |  | 79,840 |  |  | 418,676 |  |  | 99,792
|  | Total fixed maturity securities | $ | 1,581,692 |  | $ | 73,831 |  | $ | 667,783 |  | $ | 208,135 |  | $ | 2,249,475 |  | $ | 281,966
| Non-redeemable preferred stock | $ | 19,516 |  | $ | 4,478 |  | $ | 15,694 |  | $ | 4,504 |  | $ | 35,210 |  | $ | 8,982
| Other equity securities |  | 1,662 |  |  | 602 |  |  | 5,905 |  |  | 936 |  |  | 7,567 |  |  | 1,538
|  | Total equity securities | $ | 21,178 |  | $ | 5,080 |  | $ | 21,599 |  | $ | 5,440 |  | $ | 42,777 |  | $ | 10,520
Accounting for Certain Loans and Debt Securities Acquired in Transfer Disclosure [Text Block] |
|  | September 30, 2012 |  |  |
Outstanding principal and interest balance(1) | $ | 36,090 |  |  |
Carrying value, including accrued interest(2) | $ | 31,196 |  |  |
(1) | Represents the contractually required payments which is the sum of contractual principal, whether or not currently due, and accrued interest. |
(2) | Estimated fair value plus accrued interest. |
Schedule Of Certain Loans Acquired In Transfer Accounted For As Available For Sale Debt Securities At Acquisition Date [Table Text Block] |
|  | At Date of
|  | Acquisition
Contractually required payments (including interest) | $ | 50,268
Cash flows expected to be collected(1) | $ | 42,316
Fair value of investments acquired | $ | 30,853
(1) | Represents undiscounted principal and interest cash flow expectations at the date of acquisition.
Schedule Of Certain Loans Acquired In Transfer Accounted For As Available For Sale Debt Securities Accretable Yield [Table Text Block] |
| Nine months ended
| September 30, 2012
Balance, beginning of period | $ | --
Investments purchased |  | 11,463
Accretion |  | (6)
Balance, end of period | $ | 11,457
Disclosure Of Real Estate Holdings By Property Type [Table Text Block] |
|  |  | September 30, 2012 |  | December 31, 2011
|  |  | Recorded |  | Percentage |  | Recorded |  | Percentage
Property type: | Investment |  | of Total |  | Investment |  | of Total
| Apartment | $ | 238,365 |  | 10.5 | % |  | $ | 124,674 |  | 12.4 | %
| Retail |  | 618,896 |  | 27.3 |  |  |  | 335,745 |  | 33.5 |
| Office building |  | 803,889 |  | 35.4 |  |  |  | 264,584 |  | 26.4 |
| Industrial |  | 454,215 |  | 20.0 |  |  |  | 200,762 |  | 20.0 |
| Other commercial |  | 154,849 |  | 6.8 |  |  |  | 77,759 |  | 7.7 |
Total | $ | 2,270,214 |  | 100.0 | % |  | $ | 1,003,524 |  | 100.0 | %
Disclosure Of Real Estate Holdings By Geographical Region [Table Text Block] |
|  |  | September 30, 2012 |  | December 31, 2011
|  |  | Recorded |  | Percentage |  | Recorded |  | Percentage
| Investment |  | of Total |  | Investment |  | of Total
Pacific | $ | 613,425 |  | 27.0 | % |  | $ | 269,922 |  | 26.9 | %
South Atlantic |  | 470,722 |  | 20.7 |  |  |  | 233,534 |  | 23.3 |
Mountain |  | 198,443 |  | 8.7 |  |  |  | 116,224 |  | 11.6 |
Middle Atlantic |  | 311,192 |  | 13.7 |  |  |  | 86,590 |  | 8.6 |
West North Central |  | 155,745 |  | 6.9 |  |  |  | 69,789 |  | 7.0 |
East North Central |  | 221,085 |  | 9.7 |  |  |  | 92,861 |  | 9.2 |
West South Central |  | 147,177 |  | 6.5 |  |  |  | 58,506 |  | 5.8 |
East South Central |  | 60,121 |  | 2.7 |  |  |  | 40,767 |  | 4.1 |
New England |  | 92,304 |  | 4.1 |  |  |  | 35,331 |  | 3.5 |
| Total | $ | 2,270,214 |  | 100.0 | % |  | $ | 1,003,524 |  | 100.0 | %
Mortgage Loans Classified By Contractual Maturity Date [Table Text Block] |
The maturities of the mortgage loans, gross of valuation allowances, as of September 30, 2012 and December 31, 2011 are as follows (dollars in thousands):
|  |  | September 30, 2012 |  | December 31, 2011 |  |  |
Due one year through five years | $ | 1,234,191 |  | $ | 493,027 |  |  |
Due after five years |  | 731,618 |  |  | 299,252 |  |  |
Due after ten years |  | 304,405 |  |  | 211,245 |  |  |
|  | Total | $ | 2,270,214 |  | $ | 1,003,524 |  |  |
Mortgage Loan Internal Credit Risk Grade |
Internal credit risk grade: | September 30, 2012 |  | December 31, 2011 |  |  |
| High investment grade | $ | 1,153,162 |  | $ | 252,333 |  |  |
| Investment grade |  | 871,508 |  |  | 526,608 |  |  |
| Average |  | 134,205 |  |  | 105,177 |  |  |
| Watch list |  | 73,977 |  |  | 91,037 |  |  |
| In or near default |  | 37,362 |  |  | 28,369 |  |  |
|  | Total | $ | 2,270,214 |  | $ | 1,003,524 |  |  |
Schedule Of Analysis Of Past Due Financing Receivables |
|  |  | September 30, 2012 |  | December 31, 2011 |  |  |
31-60 days past due | $ | 16,627 |  | $ | 21,800 |  |  |
61-90 days past due |  | -- |  |  | -- |  |  |
Greater than 90 days |  | 16,298 |  |  | 20,316 |  |  |
| Total past due |  | 32,925 |  |  | 42,116 |  |  |
Current |  | 2,237,289 |  |  | 961,408 |  |  |
|  | Total | $ | 2,270,214 |  | $ | 1,003,524 |  |  |
Recorded Investment And Allowance For Credit Losses |
The following table presents the recorded investment in mortgage loans, by method of evaluation of credit loss, and the related valuation allowances, by type of credit loss, at (dollars in thousands):
|  |  | September 30, 2012 |  | December 31, 2011 |  |  |
Mortgage loans: |  |  |  |  |  |  |  |
| Evaluated individually for credit losses | $ | 44,394 |  | $ | 60,904 |  |  |
| Evaluated collectively for credit losses |  | 2,225,820 |  |  | 942,620 |  |  |
|  | Mortgage loans, gross of valuation allowances |  | 2,270,214 |  |  | 1,003,524 |  |  |
Valuation allowances: |  |  |  |  |  |  |  |
| Specific for credit losses |  | 8,343 |  |  | 8,188 |  |  |
| Non-specifically identified credit losses |  | 4,990 |  |  | 3,605 |  |  |
|  | Total valuation allowances |  | 13,333 |  |  | 11,793 |  |  |
|  | Mortgage loans, net of valuation allowances | $ | 2,256,881 |  | $ | 991,731 |  |  |
Allowance For Mortgage Loan And Lease Losses Provision For Loss Net |
|  |  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  |  | 2012 |  | 2011 |  | 2012 |  | 2011
Balance, beginning of period | $ | 11,011 |  | $ | 7,692 |  | $ | 11,793 |  | $ | 6,239
Charge-offs |  | (526) |  |  | -- |  |  | (4,595) |  |  | (1,157)
Provision |  | 2,848 |  |  | 2,370 |  |  | 6,135 |  |  | 4,980
Balance, end of period | $ | 13,333 |  | $ | 10,062 |  | $ | 13,333 |  | $ | 10,062
Impaired Financing Receivables Table |
|  | Unpaid Principal Balance |  | Recorded Investment |  | Related Allowance |  | Carrying Value
September 30, 2012: |  |  |  |  |  |  |  |  |  |  |
Impaired mortgage loans with no valuation allowance recorded | $ | 13,127 |  | $ | 12,585 |  | $ | -- |  | $ | 12,585
Impaired mortgage loans with valuation allowance recorded |  | 31,939 |  |  | 31,809 |  |  | 8,343 |  |  | 23,466
| Total impaired mortgage loans | $ | 45,066 |  | $ | 44,394 |  | $ | 8,343 |  | $ | 36,051
December 31, 2011: |  |  |  |  |  |  |  |  |  |  |
Impaired mortgage loans with no valuation allowance recorded | $ | 32,088 |  | $ | 31,496 |  | $ | -- |  | $ | 31,496
Impaired mortgage loans with valuation allowance recorded |  | 29,724 |  |  | 29,408 |  |  | 8,188 |  |  | 21,220
| Total impaired mortgage loans | $ | 61,812 |  | $ | 60,904 |  | $ | 8,188 |  | $ | 52,716
|  | Three Months Ended
|  | September 30, 2012 |  | September 30, 2011
|  | Average Investment(1) |  | Interest Income |  | Average Investment(1) |  | Interest Income
Impaired mortgage loans with no valuation allowance recorded | $ | 11,054 |  | $ | 109 |  | $ | 4,706 |  | $ | 32
Impaired mortgage loans with valuation allowance recorded |  | 35,047 |  |  | 461 |  |  | 31,351 |  |  | 202
| Total | $ | 46,101 |  | $ | 570 |  | $ | 36,057 |  | $ | 234
|  | Nine Months Ended
|  | September 30, 2012 |  | September 30, 2011
| Average Investment(1) |  | Interest Income |  | Average Investment(1) |  | Interest Income
Impaired mortgage loans with no valuation allowance recorded | $ | 16,312 |  | $ | 305 |  | $ | 11,228 |  | $ | 102
Impaired mortgage loans with valuation allowance recorded |  | 36,178 |  |  | 1,180 |  |  | 25,046 |  |  | 678
| Total | $ | 52,490 |  | $ | 1,485 |  | $ | 36,274 |  | $ | 780
(1) | Average recorded investment represents the average loan balances as of the beginning of period and all subsequent quarterly end of period balances.
Schedule Of Other Invested Assets [Table Text Block] |
|  |  | September 30, 2012 |  | December 31, 2011 |  |  |
Equity securities | $ | 209,272 |  | $ | 113,900 |  |  |
Limited partnerships and joint ventures |  | 350,643 |  |  | 251,315 |  |  |
Structured loans |  | 341,795 |  |  | 281,022 |  |  |
Derivatives |  | 212,322 |  |  | 257,050 |  |  |
Other |  | 122,584 |  |  | 109,254 |  |  |
| Total other invested assets | $ | 1,236,616 |  | $ | 1,012,541 |  |  |
Investment [Table Text Block] |
|  |  |  | Amortized Cost/ |  | Estimated |
|  |  |  | Recorded Investment |  | Fair Value |
Fixed maturity securities – available for sale: |  |  |  |  |  |
| Corporate securities | $ | 2,585,095 |  | $ | 2,606,816 |
| Asset-backed securities |  | 137,251 |  |  | 138,918 |
| Commercial mortgage-backed securities |  | 703,313 |  |  | 704,065 |
| U.S. Government and agencies securities |  | 240,952 |  |  | 256,168 |
| State and political subdivision securities |  | 27,297 |  |  | 27,555 |
| Other foreign government, supranational, and |  |  |  |  |  |
|  | foreign government-sponsored enterprises |  | 56,776 |  |  | 55,437 |
|  |  | Total fixed maturity securities – available for sale |  | 3,750,684 |  |  | 3,788,959 |
Mortgage loans on real estate |  | 1,009,454 |  |  | 1,021,661 |
Short-term investments |  | 101,428 |  |  | 101,338 |
Cash and cash equivalents |  | 501,593 |  |  | 501,593 |
Accrued interest |  | 43,739 |  |  | 43,739 |
|  |  | Total | $ | 5,406,898 |  | $ | 5,457,290 |

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- Definition Tabular disclosure of the realized and unrealized gains and losses reported in the statement of income which have resulted from the sale and holding of marketable securities, respectively, as well as the sale or disposal of cost method investments. Such amounts would include realized gains and losses on the sale or disposal of trading, available-for-sale, and held-to-maturity securities, unrealized gains and losses on trading securities, unrealized gains and losses on available-for-sale and held-to-maturity securities transferred to the trading securities category, realized gains and losses on the sale or disposal of cost method investments, and losses recognized for other than temporary impairments (OTTI) of such investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (c)-(e) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 12 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.M) -URI http://asc.fasb.org/extlink&oid=6784337&loc=d3e87990-122713 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 21 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27405-111563 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section M Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 7, 13, 16, 22 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6379932&loc=d3e22054-111558 + Details
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- Definition Tabular disclosure of investment income derived from investments in debt and equity securities consisting of interest income earned from investments in debt securities and on cash and cash equivalents, dividend income from investments in equity securities, and income or expense derived from the amortization of investment related discounts or premiums, respectively. This item does not include realized or unrealized gains or losses on the sale or holding of investments in debt and equity securities required to be included in earnings for the period or for other than temporary losses related to investments in debt and equity securities which are included in realized losses in the period recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(a),(b)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 13, 14, 15, 16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 14, 16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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