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Other Debt - Additional Information (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023
Debt Instrument [Line Items] |  |
Federal Home Loan Bank of Des Moines Advances | $ 550,000,000 |
Federal Reserve Bank Advances |  |
Debt Instrument [Line Items] |  |
Undrawn line of credit with the FHLB or FRB | 7,400,000,000 |
Federal Home Loan Bank Advance |  |
Debt Instrument [Line Items] |  |
Undrawn line of credit with the FHLB or FRB | 1,700,000,000 |
Federal Home Loan Bank of Des Moines Advances | $ 550,000,000 | $ 550,000,000
Weighted average interest rate | 4.13% |
Federal Home Loan Bank Advance | Maturity Start Year |  |
Debt Instrument [Line Items] |  |
Maturity year | 2026 |
Federal Home Loan Bank Advance | Maturity End Year |  |
Debt Instrument [Line Items] |  |
Maturity year | 2028 |
Finance Lease Obligations |  |
Debt Instrument [Line Items] |  |
Lease term (in years) | 60 years |

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