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Policyholder Liabilities (Significant Inputs and Assumptions) (Details) $ in Thousands | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
--- | --- | ---
Market Risk Benefit [Line Items] |  |
Market risk benefits | $ 2,666,860 | $ 2,225,621
Ceded market risk benefits | $ 659,217 | $ 604,615
Minimum | Utilization | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0004 | 0.0004
Minimum | Option Budget | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0185 | 0.0165
Minimum | Risk-Free Interest Rate | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0298 | 0.0251
Minimum | Nonperformance Risk | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0053 | 0.0006
Minimum | Mortality | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0001 | 0.0001
Minimum | Lapse | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0025 | 0.0025
Maximum | Utilization | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.4737 | 0.7875
Maximum | Option Budget | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0275 | 0.0250
Maximum | Risk-Free Interest Rate | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0476 | 0.0490
Maximum | Nonperformance Risk | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0266 | 0.0327
Maximum | Mortality | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.4600 | 0.4400
Maximum | Lapse | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.4000 | 0.4000
Weighted Average | Utilization | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0655 | 0.0424
Weighted Average | Option Budget | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0229 | 0.0231
Weighted Average | Risk-Free Interest Rate | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0335 | 0.0331
Weighted Average | Nonperformance Risk | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0198 | 0.0259
Weighted Average | Mortality | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0397 | 0.0344
Weighted Average | Lapse | Discounted cash flow |  |
Market Risk Benefit [Line Items] |  |
Market risk benefit, measurement input | 0.0370 | 0.0365

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- Definition Market Risk Benefit, Reinsurance Recoverable, after Increase (Decrease) from Instrument-Specific Credit Risk + References No definition available. + Details
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- Definition Amount, before effect of reinsurance and after accumulated increase (decrease) in instrument-specific credit risk, of contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29G -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29G Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7B Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480112/944-40-45-3 + Details
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