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Other Intangible Assets (Summary of Other Intangible Assets) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
Schedule of Other Intangible Assets [Abstract] |  |
Finite-lived intangible assets: | $ 16 | $ 18
Indefinite-lived intangible assets: | 68 | 63
Total other intangible assets | 84 | 81
Accumulated Amortization | 13 | 14
Syndicate capacity |  |
Schedule of Other Intangible Assets [Abstract] |  |
Indefinite-lived intangible assets: | 42 | 47
Agency force |  |
Schedule of Other Intangible Assets [Abstract] |  |
Indefinite-lived intangible assets: | 16 | 16
Insurance licenses |  |
Schedule of Other Intangible Assets [Abstract] |  |
Indefinite-lived intangible assets: | $ 10 | 0
Trade name |  |
Schedule of Other Intangible Assets [Abstract] |  |
Economic Useful Life | 8 years |
Finite-lived intangible assets: | $ 6 | 7
Accumulated Amortization | $ 6 | 7
Distribution channel |  |
Schedule of Other Intangible Assets [Abstract] |  |
Economic Useful Life | 15 years |
Finite-lived intangible assets: | $ 10 | 11
Accumulated Amortization | $ 7 | $ 7

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