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v3.25.3

Investments - Additional Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2025 USD ($) Issue issuer loan | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) Issue issuer loan security | Sep. 30, 2024 USD ($) security | Jun. 30, 2025 USD ($) | Dec. 31, 2024 USD ($) loan Issue issuer | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |  |  |
Unfunded commitments | $ 471,000 |  | $ 471,000 |  |  |  |  |
Fixed maturity, portfolio issues | Issue | 2,584 |  | 2,584 |  |  | 2,552 |  |
Fixed portfolio, number of issuers | issuer | 1,012 |  | 1,012 |  |  | 1,014 |  |
Non-accrual status with an amortized cost | $ 18,948,357 |  | $ 18,948,357 |  |  | $ 18,835,809 |  |
Debt securities allowance for credit loss | $ 10,415 | $ 7,132 | $ 10,415 | $ 7,132 | $ 10,355 | 10,395 | $ 7,132 | $ 7,115
Number of loans | loan | 36 |  | 36 |  |  |  |  |
Carrying value | $ 457,531 |  | $ 457,531 |  |  | 403,732 |  |
Provision (reversal) for credit losses | 404 | 1,376 | 266 | 3,530 |  |  |  |
Increase (decrease) in allowance for credit losses |  |  | (2,000) |  |  |  |  |
Allowance for credit losses | 5,633 | $ 7,202 | 5,633 | $ 7,202 | $ 6,629 | 7,644 | $ 5,826 | $ 3,672
Mortgage loans | $ 451,898 |  | $ 451,898 |  |  | $ 396,088 |  |
Commercial Portfolio Segment |  |  |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |  |  |
Number of loans removed form evaluation as a result of foreclosure | loan | 2 |  | 4 |  |  |  |  |
Outstanding principal value of loans removed form evaluation as a result of foreclosure | $ 40,600 |  | $ 45,800 |  |  |  |  |
Commercial Portfolio Segment | Unfunded Loan Commitment |  |  |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |  |  |
Mortgage loans | $ 23,000 |  | $ 23,000 |  |  |  |  |
Commercial Portfolio Segment | Loans In Process Of Foreclosure |  |  |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |  |  |
Number of loans | loan | 0 |  | 0 |  |  |  |  |
Senior Loans on Non Accrual Status |  |  |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |  |  |
Number of fixed maturities securities | security |  |  | 2 | 0 |  |  |  |
Non-accrual status with an amortized cost | $ 16,000 |  | $ 16,000 |  |  |  |  |
Debt securities allowance for credit loss | $ 10,000 |  | $ 10,000 |  |  |  |  |
Collaterally Dependent Loans | Commercial Portfolio Segment |  |  |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |  |  |
Number of loans | loan | 2 |  | 2 |  |  |  |  |
Carrying value | $ 8,200 |  | $ 8,200 |  |  |  |  |
Provision (reversal) for credit losses |  |  | $ 1,600 |  |  |  |  |
Nonaccrual Loans | Commercial Portfolio Segment |  |  |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |  |  |
Number of loans | loan | 1 |  | 1 |  |  | 5 |  |
Outstanding principal on nonaccrual loan | $ 7,000 |  | $ 7,000 |  |  | $ 53,000 |  |
Fixed maturities available for sale |  |  |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |  |  |
Unfunded commitments | 263,000 |  | 263,000 |  |  | $ 167,000 |  |
Investment in Limited Partnerships |  |  |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |  |  |
Unfunded commitments | $ 470,834 |  | 470,834 |  |  |  |  |
Capital called from investment funds |  |  | $ 127,000 |  |  |  |  |

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