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Derivative Instruments (Tables) | 3 Months Ended
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Mar. 31, 2013
Derivative Instruments [Abstract] |
Schedule Of Derivative Instruments In Statement Of Financial Position Fair Value |
|  |  |  |  | March 31, 2013 |  |  | December 31, 2012
|  |  |  |  |  | Notional |  | Carrying Value/Fair Value |  |  |  | Notional |  | Carrying Value/Fair Value
|  |  |  |  |  | Amount |  |  | Assets |  |  | Liabilities |  |  |  | Amount |  |  | Assets |  |  | Liabilities
Derivatives not designated as |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| hedging instruments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Interest rate swaps | $ | 1,566,403 |  | $ | 99,860 |  | $ | 15,642 |  |  | $ | 2,195,059 |  | $ | 123,085 |  | $ | 17,867
| Interest rate options |  | 240,000 |  |  | 16,054 |  |  | -- |  |  |  | -- |  |  | -- |  |  | --
| Financial futures |  | 113,046 |  |  | -- |  |  | -- |  |  |  | 127,877 |  |  | -- |  |  | --
| Foreign currency forwards |  | 70,000 |  |  | -- |  |  | 7,014 |  |  |  | 74,400 |  |  | 1,017 |  |  | 2,105
| Consumer price index swaps |  | 85,332 |  |  | 945 |  |  | -- |  |  |  | 85,135 |  |  | 1,446 |  |  | --
| Credit default swaps |  | 716,700 |  |  | 2,160 |  |  | 5,431 |  |  |  | 714,000 |  |  | 2,228 |  |  | 5,922
| Equity options |  | 812,494 |  |  | 54,791 |  |  | -- |  |  |  | 696,776 |  |  | 62,514 |  |  | --
| Synthetic guaranteed investment contracts |  | 3,185,035 |  |  | -- |  |  | -- |  |  |  | 2,018,073 |  |  | -- |  |  | --
| Embedded derivatives in: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Modified coinsurance or funds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  | withheld arrangements |  | -- |  |  | -- |  |  | 156,189 |  |  |  | -- |  |  | -- |  |  | 243,177
|  | Indexed annuity products |  | -- |  |  | -- |  |  | 769,685 |  |  |  | -- |  |  | -- |  |  | 740,256
|  | Variable annuity products |  | -- |  |  | -- |  |  | 120,791 |  |  |  | -- |  |  | -- |  |  | 172,105
| Total non-hedging derivatives |  | 6,789,010 |  |  | 173,810 |  |  | 1,074,752 |  |  |  | 5,911,320 |  |  | 190,290 |  |  | 1,181,432
Derivatives designated as |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| hedging instruments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Interest rate swaps |  | 55,098 |  |  | 254 |  |  | 2,273 |  |  |  | 57,275 |  |  | 344 |  |  | 786
| Foreign currency swaps |  | 632,921 |  |  | 1,172 |  |  | 11,719 |  |  |  | 629,512 |  |  | -- |  |  | 27,398
| Total hedging derivatives |  | 688,019 |  |  | 1,426 |  |  | 13,992 |  |  |  | 686,787 |  |  | 344 |  |  | 28,184
Total derivatives | $ | 7,477,029 |  | $ | 175,236 |  | $ | 1,088,744 |  |  | $ | 6,598,107 |  | $ | 190,634 |  | $ | 1,209,616
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
| Three months ended March 31,
| 2013 |  | 2012
Accumulated other comprehensive income (loss), balance beginning of period | $ | 403 |  | $ | (828)
Gains (losses) deferred in other comprehensive income (loss) on the effective portion of cash flow hedges |  | 1,863 |  |  | 323
Amounts reclassified to investment income |  | (305) |  |  | (357)
Accumulated other comprehensive income (loss), balance end of period | $ | 1,961 |  | $ | (862)
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] |
Derivatives in Cash Flow Hedging Relationships |  | Amount of Gains (Losses) Deferred in AOCI on Derivatives |  | Amount and Location of Gains (Losses) Reclassified from AOCI into Income (Loss) |  | Amount and Location of Gains (Losses) Recognized in Income (Loss) on Derivatives
|  | (Effective Portion) |  | (Effective Portion) |  | (Ineffective Portion and Amounts Excluded from Effectiveness Testing)
|  |  |  |  | Investment Related Gains (Losses) |  | Investment Income |  | Investment Related Gains (Losses) |  | Investment Income
For the three months ended March 31, 2013: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | 1,863 |  | $ | -- |  | $ | 305 |  | $ | (17) |  | $ | --
For the three months ended March 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | 323 |  | $ | -- |  | $ | 357 |  | $ | (24) |  | $ | --
Derivatives Hedging Instruments In Net Investment Hedging Relationships |
|  |  | Derivative Gains (Losses) Deferred in AOCI |  |  |
|  |  | For the three months ended March 31, |  |  |
Type of NIFO Hedge (1) (2) |  | 2013 |  | 2012 |  |  |
Foreign currency swaps |  | $ | 10,922 |  | $ | (10,645) |  |  |
(1) | There were no sales or substantial liquidations of net investments in foreign operations that would have required the reclassification of gains or losses from accumulated other comprehensive income (loss) into investment income during the periods presented.
(2) | There was no ineffectiveness recognized for the Company's hedges of net investments in foreign operations.
Derivative Instruments Gain Loss By Income Statement Location |
A summary of the effect of non-hedging derivatives, including embedded derivatives, on the Company’s income statement for the three months ended March 31, 2013 and 2012 is as follows (dollars in thousands):
|  |  |  |  |  |  | Gain (Loss) for the Three Months Ended
|  |  |  |  |  |  | March 31,
Type of Non-hedging Derivative |  | Income Statement Location of Gain (Loss) |  | 2013 |  | 2012
Interest rate swaps |  | Investment related gains (losses), net |  | $ | (22,265) |  | $ | (47,352)
Interest rate options |  | Investment related gains (losses), net |  |  | 1,982 |  |  | --
Financial futures |  | Investment related gains (losses), net |  |  | (6,881) |  |  | (17,409)
Foreign currency forwards |  | Investment related gains (losses), net |  |  | (5,659) |  |  | (1,608)
CPI swaps |  | Investment related gains (losses), net |  |  | (871) |  |  | (802)
Credit default swaps |  | Investment related gains (losses), net |  |  | 3,904 |  |  | 11,813
Equity options |  | Investment related gains (losses), net |  |  | (30,623) |  |  | (37,983)
Embedded derivatives in: |  |  |  |  |  |  |  |  |
| Modco or funds withheld arrangements | Investment related gains (losses), net |  |  | 90,257 |  |  | (9,428)
| Indexed annuity products |  | Policy acquisition costs and other insurance |  |  |  |  |  |
|  |  |  |  | expenses |  |  | -- |  |  | (998)
| Indexed annuity products |  | Interest credited |  |  | (32,996) |  |  | (18,741)
| Variable annuity products |  | Investment related gains (losses), net |  |  | 51,314 |  |  | 146,375
Total non-hedging derivatives |  |  |  |  | $ | 48,162 |  | $ | 23,867
Disclosure Of Credit Derivatives [Text Block] |
|  |  | March 31, 2013 |  |  | December 31, 2012
Rating Agency Designation of Referenced Credit Obligations(1) |  | Estimated Fair Value of Credit Default Swaps |  | Maximum Amount of Future Payments under Credit Default Swaps(2) |  | Weighted Average Years to Maturity(3) |  | Estimated Fair Value of Credit Default Swaps |  | Maximum Amount of Future Payments under Credit Default Swaps(2) |  | Weighted Average Years to Maturity(3)
AAA/AA-/A+/A/A- |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Single name credit default swaps |  | $ | (1,630) |  | $ | 124,500 |  | 5.7 |  | $ | (2,077) |  | $ | 124,500 |  | 5.9
Credit default swaps referencing indices |  |  | -- |  |  | -- |  | -- |  |  | -- |  |  | -- |  | --
| Subtotal |  |  | (1,630) |  |  | 124,500 |  | 5.7 |  |  | (2,077) |  |  | 124,500 |  | 5.9
BBB+/BBB/BBB- |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Single name credit default swaps |  |  | (2,030) |  |  | 138,200 |  | 5.7 |  |  | (2,345) |  |  | 135,500 |  | 5.5
Credit default swaps referencing indices |  |  | 565 |  |  | 430,000 |  | 4.7 |  |  | 937 |  |  | 430,000 |  | 5.0
| Subtotal |  |  | (1,465) |  |  | 568,200 |  | 5.0 |  |  | (1,408) |  |  | 565,500 |  | 5.1
BB+ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Single name credit default swaps |  |  | (110) |  |  | 6,000 |  | 4.2 |  |  | (222) |  |  | 6,000 |  | 4.5
Credit default swaps referencing indices |  |  | -- |  |  | -- |  | -- |  |  | -- |  |  | -- |  | --
| Subtotal |  |  | (110) |  |  | 6,000 |  | 4.2 |  |  | (222) |  |  | 6,000 |  | 4.5
Total |  | $ | (3,205) |  | $ | 698,700 |  | 5.1 |  | $ | (3,707) |  | $ | 696,000 |  | 5.2
(1) | The rating agency designations are based on ratings from Standard and Poor's ("S&P").
(2) | Assumes the value of the referenced credit obligations is zero.
(3) | The weighted average years to maturity of the credit default swaps is calculated based on weighted average notional amounts.
Changes In Estimated Fair Value Related To Embedded Derivatives |
|  | Three months ended
|  | March 31,
|  | 2013 |  | 2012
Embedded derivatives in modco or funds withheld arrangements included |  |  |  |  |
| in investment related gains | $ | 90,257 |  | $ | (9,428)
After the associated amortization of DAC and taxes, the related amounts included in net income |  | 21,624 |  |  | 1,933
Embedded derivatives in variable annuity contracts included in investment related gains |  | 51,314 |  |  | 146,375
After the associated amortization of DAC and taxes, the related amounts included in net income |  | 12,192 |  |  | 15,082
Amounts related to embedded derivatives in equity-indexed annuities included |  |  |  |  |
| in benefits and expenses |  | (32,996) |  |  | (19,739)
After the associated amortization of DAC and taxes, the related amounts included in net income |  | (29,550) |  |  | 13,870
Credit Risk |
|  |  | March 31, 2013 |  | December 31, 2012 |  |
Estimated fair value of derivatives in net asset position | $ | 133,157 |  | $ | 136,558 |  |
| Cash provided as collateral(1) |  | 6,250 |  |  | 27,867 |  |
| Securities pledged to counterparties as collateral(2) |  | 14,118 |  |  | 1,565 |  |
| Cash pledged from counterparties as collateral(3) |  | (126,329) |  |  | (136,414) |  |
| Securities pledged from counterparties as collateral(4) |  | (17,664) |  |  | (22,458) |  |
Net credit exposure | $ | 9,532 |  | $ | 7,118 |  |
Margin account related to exchange-traded futures(5) | $ | 3,529 |  | $ | 5,605 |  |
(1) | Consists of receivable from counterparty, included in other assets. |  |  |  |  |
(2) | Included in other invested assets, primarily consists of U.S. Treasury securities. |  |
(3) | Included in cash and cash equivalents, with obligation to return cash collateral recorded in other liabilities. |  |
(4) | Consists of U.S. Treasury securities. |  |  |  |  |
(5) | Included in cash and cash equivalents. |  |  |  |  |

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- Definition This table presents the entity's net position for over-the-counter derivatives after considering the effect of netting agreements and presents the collateral that the entity holds or has posted in relation to over-the-counter derivatives at the reporting date. + References No definition available. + Details
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- Definition Tabular disclosure of credit derivatives which includes information by sellers of credit derivatives, about each credit derivative, or each group of similar credit derivatives, including (a) the nature of the credit derivative - its term, how it arose, the events or circumstances that would require the seller to perform under the credit derivative, and the current status of the payment/performance risk of the credit derivative; (b) the maximum potential amount of future payments (undiscounted) the seller could be required to make under the credit derivative; (c) the current fair value of the credit derivative; and (d) the nature of any recourse provisions under the credit derivative, and any assets held either as collateral or by third parties. A credit derivative is a derivative instrument (1) in which one or more of its underlyings are related to the credit risk of a specified entity (or a group of entities) or an index based on the credit risk of a group of entities and (2) that exposes the seller to potential loss from credit-risk-related events specified in the contract. Examples of credit derivatives within the scope of this paragraph include, but are not limited to, credit default swaps, credit spread options, and credit index products; also includes a hybrid instrument that has an embedded credit derivative (for example, but not limited to, a credit-linked note). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4L -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5708777-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44DD -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 Accounting Standards Codification -Glossary Credit Derivative -URI http://asc.fasb.org/extlink&oid=6854095 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5708775-113959 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5708773-113959 + Details
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