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Fair Value Measurements (Fair Value Of Deferred Annuities, Structured Settlements And Other Items) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis |  |
Fair value of deferred annuities and structured settlements | $ 744 | $ 764
Deferred Annuities |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis |  |
Fair value of deferred annuities and structured settlements | 603 | 621
Structured Settlements |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis |  |
Fair value of deferred annuities and structured settlements | 141 | 143
Level 1 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis |  |
Fair value of deferred annuities and structured settlements | 0 | 0
Level 1 | Deferred Annuities |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis |  |
Fair value of deferred annuities and structured settlements | 0 | 0
Level 1 | Structured Settlements |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis |  |
Fair value of deferred annuities and structured settlements | 0 | 0
Level 2 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis |  |
Fair value of deferred annuities and structured settlements | 141 | 143
Level 2 | Deferred Annuities |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis |  |
Fair value of deferred annuities and structured settlements | 0 | 0
Level 2 | Structured Settlements |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis |  |
Fair value of deferred annuities and structured settlements | 141 | 143
Level 3 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis |  |
Fair value of deferred annuities and structured settlements | 603 | 621
Level 3 | Deferred Annuities |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis |  |
Fair value of deferred annuities and structured settlements | 603 | 621
Level 3 | Structured Settlements |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis |  |
Fair value of deferred annuities and structured settlements | $ 0 | $ 0

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