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Other Intangible Assets (Summary of Other Intangible Assets) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Schedule of Other Intangible Assets [Abstract] |  |
Finite-lived intangible assets: | $ 18 | $ 18
Indefinite-lived intangible assets: | 63 | 64
Total other intangible assets | 81 | 82
Accumulated Amortization | 14 | 13
Syndicate capacity |  |
Schedule of Other Intangible Assets [Abstract] |  |
Indefinite-lived intangible assets: | 47 | 48
Agency force |  |
Schedule of Other Intangible Assets [Abstract] |  |
Indefinite-lived intangible assets: | $ 16 | 16
Trade name |  |
Schedule of Other Intangible Assets [Abstract] |  |
Economic Useful Life | 8 years |
Finite-lived intangible assets: | $ 7 | 7
Accumulated Amortization | $ 7 | 7
Distribution channel |  |
Schedule of Other Intangible Assets [Abstract] |  |
Economic Useful Life | 15 years |
Finite-lived intangible assets: | $ 11 | 11
Accumulated Amortization | $ 7 | $ 6

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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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