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