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Derivatives (Embedded Derivatives) (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Total | $ 90 | $ (9)
Funds withheld and guarantees on reinsurance | Other liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Total | (105) | (163)
Fixed annuities with equity indexed returns [Member] | Policyholder account balances |  |
Derivatives, Fair Value [Line Items] |  |
Total | $ (15) | $ (172)

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