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Derivative Financial Instruments and Off-balance Sheet Financial Instruments - Schedule of CDS Notional Amounts by Credit Rating And Fair Value of Protection Sold (Details) - Credit default contracts $ in Millions | Dec. 31, 2025 USD ($)
--- | ---
Derivative [Line Items] |
Derivative, notional amount | $ 550
Total | 9
AAA |
Derivative [Line Items] |
Derivative, notional amount | 0
AA |
Derivative [Line Items] |
Derivative, notional amount | 0
NAIC 1 / A |
Derivative [Line Items] |
Derivative, notional amount | 0
BBB |
Derivative [Line Items] |
Derivative, notional amount | 550
BB and lower |
Derivative [Line Items] |
Derivative, notional amount | $ 0

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