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Fair Value Measurement - Narrative (Details) - security | Dec. 31, 2024 | Dec. 31, 2023
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Credit Default Swap |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Percentage of CDS contracts fair valued using minimum premium | 0.00% | 0.00%
Recurring | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Number of fixed maturity securities valued using model processes | 179 |

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