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v3.25.2

Borrowings and Financing Activities - Additional Information (Details) | 3 Months Ended | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Apr. 30, 2025 USD ($) | Dec. 31, 2024 USD ($) | May 31, 2024 USD ($) | Apr. 30, 2024 USD ($) | Jan. 31, 2024 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Repayments in cash |  |  | $ 0 | $ 527,079,000 |  |  |  |  |
Loss on extinguishment of debt | $ 0 | $ 0 | 0 | $ 4,275,000 |  |  |  |  |
Collateral | 6,484,692,000 |  | 6,484,692,000 |  |  | $ 6,345,236,000 |  |  |
Residential mortgage loans held for sale | Asset Pledged as Collateral |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral | 691,000,000 |  | 691,000,000 |  |  | 515,000,000 |  |  |
Total fixed-maturities available for sale | Fixed maturities AFS and trading securities |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
FHLB, collateral pledged | 105,000,000 |  | 105,000,000 |  |  | 49,000,000 |  |  |
Senior Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Outstanding borrowings | 1,066,603,000 |  | $ 1,066,603,000 |  |  | 1,065,337,000 |  |  |
FHLB Advances | Minimum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
FHLB, ratio of market value of collateral to advances |  |  | 1.03 |  |  |  |  |  |
FHLB Advances | Maximum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
FHLB, ratio of market value of collateral to advances |  |  | 1.14 |  |  |  |  |  |
Mortgage Loan Financing Facilities | Goldman Sachs Master Repurchase Agreement |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 200,000,000 |  |
Mortgage Loan Financing Facilities | BMO Master Repurchase Agreement |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  | $ 400,000,000 |
Mortgage Loan Financing Facilities | JP Morgan Master Repurchase Agreement |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  | $ 400,000,000
Mortgage Loan Financing Facilities | Everbank Master Repurchase Agreement |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  | $ 125,000,000 |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Fair value of amount outstanding | 0 |  | $ 0 |  |  |  |  |  |
Borrowed debt | 50,000,000 |  |  |  |  |  |  |  |
Repayment of debt | 50,000,000 |  |  |  |  |  |  |  |
Revolving Credit Facility | Unsecured Revolving Credit Facility, Expiration Date 2026 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Current borrowing capacity | $ 275,000,000 |  | $ 275,000,000 |  |  |  |  |  |
Senior Notes due 2029 | Senior Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate on senior notes | 6.20% |  | 6.20% |  |  |  |  |  |
Outstanding borrowings | $ 618,592,000 |  | $ 618,592,000 |  |  | $ 617,876,000 |  |  |

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