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Fair Value Measurements - (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and Cash Equivalents, Fair Value Disclosure	$ 1,460	$ 983
Outstanding principle and interest for life policy loans	37	36
Life policy and investment contract reserves	3,003	2,960
Investment contract reserves:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Life policy and investment contract reserves	1,375	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	565	595
Investment contract reserves: | Structured Settlement Annuity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Life policy and investment contract reserves	$ 112	$ 116

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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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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