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Fair Values of Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2022
Fair Value Disclosures [Abstract] |
Carrying Amounts and Fair Values of Financial Instruments | The following sets forth a comparison of the carrying amounts and fair values of our financial instruments:
| December 31,
| 2022 |  | 2021
| Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
| (Dollars in thousands)
Assets |  |  |  |  |  |  |
Fixed maturity securities, available for sale | $ | 39,804,617 |  |  | $ | 39,804,617 |  |  | $ | 51,305,943 |  |  | $ | 51,305,943 |
Mortgage loans on real estate | 6,949,027 |  |  | 6,502,463 |  |  | 5,687,998 |  |  | 5,867,227 |
Real estate investments | 1,056,063 |  |  | 1,056,063 |  |  | 337,939 |  |  | 337,939 |
Limited partnerships and limited liability companies | 684,835 |  |  | 684,835 |  |  | 168,711 |  |  | 168,711 |
Derivative instruments | 431,727 |  |  | 431,727 |  |  | 1,277,480 |  |  | 1,277,480 |
Other investments | 1,817,085 |  |  | 1,817,085 |  |  | 1,247,024 |  |  | 1,247,024 |
Cash and cash equivalents | 1,919,669 |  |  | 1,919,669 |  |  | 4,508,982 |  |  | 4,508,982 |
Coinsurance deposits | 13,254,956 |  |  | 12,640,797 |  |  | 8,988,891 |  |  | 8,188,338 |
Market risk benefits | 229,871 |  |  | 229,871 |  |  | 526,373 |  |  | 526,373 |
Liabilities |  |  |  |  |  |  |
Policy benefit reserves | 58,419,911 |  |  | 55,572,896 |  |  | 62,169,441 |  |  | 56,375,076 |
Market risk benefits | 2,455,492 |  |  | 2,455,492 |  |  | 3,162,162 |  |  | 3,162,162 |
Single premium immediate annuity (SPIA) benefit reserves | 212,119 |  |  | 221,130 |  |  | 226,207 |  |  | 235,891 |
Other policy funds - FHLB | 300,000 |  |  | 300,000 |  |  | — |  |  | — |
Notes and loan payable | 792,073 |  |  | 774,220 |  |  | 496,250 |  |  | 569,485 |
Subordinated debentures | 78,753 |  |  | 87,293 |  |  | 78,421 |  |  | 93,721 |
Assets and Liabilities Measured on a Recurring Basis, By Fair Value Hierarchy Level | Our assets and liabilities which are measured at fair value on a recurring basis as of December 31, 2022 and 2021 are presented below based on the fair value hierarchy levels:
| Total Fair Value |  | NAV |  | Quoted Prices in Active Markets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
| (Dollars in thousands)
December 31, 2022 |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |
Fixed maturity securities, available for sale: |  |  |  |  |  |  |  |  |
U.S. Government and agencies | $ | 169,071 |  |  | $ | — |  |  | $ | 26,184 |  |  | $ | 142,887 |  |  | $ | — |
States, municipalities and territories | 3,822,982 |  |  | — |  |  | — |  |  | 3,822,982 |  |  | — |
Foreign corporate securities and foreign governments | 676,852 |  |  | — |  |  | — |  |  | 676,852 |  |  | — |
Corporate securities | 24,161,921 |  |  | — |  |  | — |  |  | 23,759,573 |  |  | 402,348 |
Residential mortgage backed securities | 1,377,611 |  |  | — |  |  | — |  |  | 1,377,611 |  |  | — |
Commercial mortgage backed securities | 3,687,478 |  |  | — |  |  | — |  |  | 3,687,478 |  |  | — |
Other asset backed securities | 5,908,702 |  |  | — |  |  | — |  |  | 5,465,784 |  |  | 442,918 |
Other investments | 1,013,297 |  |  | — |  |  | 398,280 |  |  | 615,017 |  |  | — |
Real estate investments | 940,559 |  |  | — |  |  | — |  |  | — |  |  | 940,559 |
Limited partnerships and limited liability companies | 684,835 |  |  | 620,626 |  |  | — |  |  | — |  |  | 64,209 |
Derivative instruments | 431,727 |  |  | — |  |  | — |  |  | 431,727 |  |  | — |
Cash and cash equivalents | 1,919,669 |  |  | — |  |  | 1,919,669 |  |  | — |  |  | — |
Market risk benefits (a) | 229,871 |  |  | — |  |  | — |  |  | — |  |  | 229,871 |
| $ | 45,024,575 |  |  | $ | 620,626 |  |  | $ | 2,344,133 |  |  | $ | 39,979,911 |  |  | $ | 2,079,905 |
Liabilities |  |  |  |  |  |  |  |  |
Funds withheld liability - embedded derivative | $ | (441,864) |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (441,864) |
Fixed index annuities - embedded derivatives | 4,820,845 |  |  | — |  |  | — |  |  | — |  |  | 4,820,845 |
Market risk benefits (a) | 2,455,492 |  |  | — |  |  | — |  |  | — |  |  | 2,455,492 |
| $ | 6,834,473 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 6,834,473 |
December 31, 2021 |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |
Fixed maturity securities, available for sale: |  |  |  |  |  |  |  |  |
U.S. Government and agencies | $ | 1,078,746 |  |  | $ | — |  |  | $ | 32,737 |  |  | $ | 1,046,009 |  |  | $ | — |
States, municipalities and territories | 3,927,201 |  |  | — |  |  | — |  |  | 3,927,201 |  |  | — |
Foreign corporate securities and foreign governments | 402,545 |  |  | — |  |  | — |  |  | 402,545 |  |  | — |
Corporate securities | 34,660,234 |  |  | — |  |  | 32,700 |  |  | 34,627,534 |  |  | — |
Residential mortgage backed securities | 1,125,049 |  |  | — |  |  | — |  |  | 1,125,049 |  |  | — |
Commercial mortgage backed securities | 4,840,311 |  |  | — |  |  | — |  |  | 4,840,311 |  |  | — |
Other asset backed securities | 5,271,857 |  |  | — |  |  | — |  |  | 5,271,857 |  |  | — |
Other investments | 12,226 |  |  | — |  |  | — |  |  | 5,877 |  |  | 6,349 |
Real estate investments | 337,939 |  |  | — |  |  | — |  |  | — |  |  | 337,939 |
Limited partnerships and limited liability companies | 168,711 |  |  | 168,711 |  |  | — |  |  | — |  |  | — |
Derivative instruments | 1,277,480 |  |  | — |  |  | — |  |  | 1,277,480 |  |  | — |
Cash and cash equivalents | 4,508,982 |  |  | — |  |  | 4,508,982 |  |  | — |  |  | — |
Market risk benefits (a) | 526,373 |  |  | — |  |  | — |  |  | — |  |  | 526,373 |
| $ | 58,137,654 |  |  | $ | 168,711 |  |  | $ | 4,574,419 |  |  | $ | 52,523,863 |  |  | $ | 870,661 |
Liabilities |  |  |  |  |  |  |  |  |
Funds withheld liability - embedded derivative | $ | (2,362) |  |  | $ | — |  |  | $ | — |  |  | $ | (2,362) |  |  | $ | — |
Fixed index annuities - embedded derivatives | 7,964,961 |  |  | — |  |  | — |  |  | — |  |  | 7,964,961 |
Market risk benefits (a) | 3,162,162 |  |  | — |  |  | — |  |  | — |  |  | 3,162,162 |
| $ | 11,124,761 |  |  | $ | — |  |  | $ | — |  |  | $ | (2,362) |  |  | $ | 11,127,123 |
(a)See Note 8 - Policyholder Liabilities for additional information related to market risk benefits, including the balances of and changes in market risk benefits as well as significant inputs and assumptions used in the fair value measurements of market risk benefits.
Schedule of Assumptions Used in Estimating Fair Value | The following table presents average lapse rate and partial withdrawal rate assumptions, by contract duration, used in estimating the fair value of the embedded derivative component of our fixed index annuity policy benefit reserves at each reporting date:
|  | Average Lapse Rates |  | Average Partial Withdrawal Rates
Contract Duration (Years) |  | December 31, 2022 |  | December 31, 2021 |  | December 31, 2022 |  | December 31, 2021
1 - 5 |  | 2.17% |  | 3.04% |  | 1.86% |  | 2.19%
6 - 10 |  | 3.28% |  | 2.84% |  | 1.97% |  | 2.26%
11 - 15 |  | 3.63% |  | 4.47% |  | 1.86% |  | 2.14%
16 - 20 |  | 8.55% |  | 8.93% |  | 2.96% |  | 1.33%
20+ |  | 4.90% |  | 4.93% |  | 1.81% |  | —%
Assets Measured at Fair Value on Recurring Basis, Level 3 Reconciliation | The following table provides a reconciliation of the beginning and ending balances for our Level 3 assets and liabilities, which are measured at fair value on a recurring basis using significant unobservable inputs for the years ended December 31, 2022 and 2021:
| Year Ended December 31,
| 2022 |  | 2021
| (Dollars in thousands)
Fixed maturity securities, available for sale - Corporate securities |  |  |
Beginning balance | $ | — |  |  | $ | — |
Purchases | 2,233 |  |  | — |
Transfers in | 391,702 |  |  | — |
Transfers out | — |  |  | — |
Total realized/unrealized gains (losses): |  |  |
Included in net income | — |  |  | — |
Included in other comprehensive income (loss) | 8,413 |  |  | — |
Ending balance | $ | 402,348 |  |  | $ | — |
Fixed maturity securities, available for sale - Other asset backed securities |  |  |
Beginning balance | $ | — |  |  | $ | — |
Purchases | 296,800 |  |  | — |
Transfers in | 153,669 |  |  | — |
Transfers out | — |  |  | — |
Total realized/unrealized gains (losses): |  |  |
Included in net income | — |  |  | — |
Included in other comprehensive income (loss) | (7,551) |  |  | — |
Ending balance | $ | 442,918 |  |  | $ | — |
Other investments |  |  |
Beginning balance | $ | 6,349 |  |  | $ | — |
Transfers in | — |  |  | 6,349 |
Transfers out | (3,867) |  |  | — |
Total realized/unrealized gains (losses): |  |  |
Included in net income | (2,482) |  |  | — |
Included in other comprehensive income (loss) | — |  |  | — |
Ending balance | $ | — |  |  | $ | 6,349 |
| Year Ended December 31,
| 2022 |  | 2021
| (Dollars in thousands)
Real estate investments |  |  |
Beginning balance | $ | 337,939 |  |  | $ | — |
Purchases and sales, net | 602,298 |  |  | 335,767 |
Change in fair value | 322 |  |  | 2,172 |
Ending balance | $ | 940,559 |  |  | $ | 337,939 |
Limited partnerships and limited liability companies |  |  |
Beginning balance | $ | — |  |  | $ | — |
Purchases and sales, net | 57,574 |  |  | — |
Change in fair value | 6,635 |  |  | — |
Ending balance | $ | 64,209 |  |  | $ | — |
Funds withheld liability - embedded derivative |  |  |
Beginning balance | $ | — |  |  | $ | — |
Transfers in | (441,864) |  |  | — |
Change in fair value | — |  |  | — |
Ending balance | $ | (441,864) |  |  | $ | — |
Fixed index annuities - embedded derivatives |  |  |
Beginning balance | $ | 7,964,961 |  |  | $ | 7,938,281 |
Premiums less benefits | (125,940) |  |  | 1,424,372 |
Change in fair value, net | (2,561,676) |  |  | (876,803) |
Reserve release related to in-force ceded reinsurance | (456,500) |  |  | (520,889) |
Ending balance | $ | 4,820,845 |  |  | $ | 7,964,961 |
Liabilities Measured at Fair Value on Recurring Basis, Level 3 Reconciliation | The following table provides a reconciliation of the beginning and ending balances for our Level 3 assets and liabilities, which are measured at fair value on a recurring basis using significant unobservable inputs for the years ended December 31, 2022 and 2021:
| Year Ended December 31,
| 2022 |  | 2021
| (Dollars in thousands)
Fixed maturity securities, available for sale - Corporate securities |  |  |
Beginning balance | $ | — |  |  | $ | — |
Purchases | 2,233 |  |  | — |
Transfers in | 391,702 |  |  | — |
Transfers out | — |  |  | — |
Total realized/unrealized gains (losses): |  |  |
Included in net income | — |  |  | — |
Included in other comprehensive income (loss) | 8,413 |  |  | — |
Ending balance | $ | 402,348 |  |  | $ | — |
Fixed maturity securities, available for sale - Other asset backed securities |  |  |
Beginning balance | $ | — |  |  | $ | — |
Purchases | 296,800 |  |  | — |
Transfers in | 153,669 |  |  | — |
Transfers out | — |  |  | — |
Total realized/unrealized gains (losses): |  |  |
Included in net income | — |  |  | — |
Included in other comprehensive income (loss) | (7,551) |  |  | — |
Ending balance | $ | 442,918 |  |  | $ | — |
Other investments |  |  |
Beginning balance | $ | 6,349 |  |  | $ | — |
Transfers in | — |  |  | 6,349 |
Transfers out | (3,867) |  |  | — |
Total realized/unrealized gains (losses): |  |  |
Included in net income | (2,482) |  |  | — |
Included in other comprehensive income (loss) | — |  |  | — |
Ending balance | $ | — |  |  | $ | 6,349 |
| Year Ended December 31,
| 2022 |  | 2021
| (Dollars in thousands)
Real estate investments |  |  |
Beginning balance | $ | 337,939 |  |  | $ | — |
Purchases and sales, net | 602,298 |  |  | 335,767 |
Change in fair value | 322 |  |  | 2,172 |
Ending balance | $ | 940,559 |  |  | $ | 337,939 |
Limited partnerships and limited liability companies |  |  |
Beginning balance | $ | — |  |  | $ | — |
Purchases and sales, net | 57,574 |  |  | — |
Change in fair value | 6,635 |  |  | — |
Ending balance | $ | 64,209 |  |  | $ | — |
Funds withheld liability - embedded derivative |  |  |
Beginning balance | $ | — |  |  | $ | — |
Transfers in | (441,864) |  |  | — |
Change in fair value | — |  |  | — |
Ending balance | $ | (441,864) |  |  | $ | — |
Fixed index annuities - embedded derivatives |  |  |
Beginning balance | $ | 7,964,961 |  |  | $ | 7,938,281 |
Premiums less benefits | (125,940) |  |  | 1,424,372 |
Change in fair value, net | (2,561,676) |  |  | (876,803) |
Reserve release related to in-force ceded reinsurance | (456,500) |  |  | (520,889) |
Ending balance | $ | 4,820,845 |  |  | $ | 7,964,961 |

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