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Fair Value Measurements - (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and Cash Equivalents, Fair Value Disclosure	$ 1,010	$ 983
Outstanding principle and interest for life policy loans	36	36
Life policy and investment contract reserves	2,968	2,960
Investment contract reserves:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Life policy and investment contract reserves	1,393	1,406
Investment contract reserves: | Deferred Fixed Annuity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Life policy and investment contract reserves	582	595
Investment contract reserves: | Structured Settlement Annuity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Life policy and investment contract reserves	$ 116	$ 116

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Amount, before effect of reinsurance, of present value of future benefit to be paid to or on behalf of policyholder and related expense less present value of future net premium receivable under insurance contract.

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