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Fair Value Measurements (Narrative) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Cash and cash equivalents $ 907 $ 1,264
Principal amount of debt 793 793
Recorded outstanding principal and interest for these life policy loans 108 92
Life policy and investment contract reserves 3,068 3,015
Investment contract reserves    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Life policy and investment contract reserves 1,471 1,552
Deferred Fixed Annuity | Investment contract reserves    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Life policy and investment contract reserves 656 734
Structured Settlement Annuity | Investment contract reserves    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Life policy and investment contract reserves 123 129
Life Policy Loans    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Recorded outstanding principal and interest for these life policy loans $ 33 $ 31