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Derivatives (Embedded Derivatives) (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Derivatives, Fair Value [Line Items]
Total	$ (132)	$ (9)
Funds withheld and guarantees on reinsurance | Other liabilities
Derivatives, Fair Value [Line Items]
Total	116	(163)
Fixed annuities with equity indexed returns [Member] | Policyholder account balances
Derivatives, Fair Value [Line Items]
Total	(16)	$ (172)
Funds withheld on ceded reinsurance Chariot Re.
Derivatives, Fair Value [Line Items]
Total	$ 198

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