Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Intangible assets, less accumulated amortization	$ 312		$ 312		$ 326
Amortization of Intangible Assets	7	$ 6	21	$ 34
Finite-Lived Intangible Assets, Net	298		298		312
PWIC
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	14		14		14
Insurance Intangible Asset [Member]
Intangible Assets, Gross (Excluding Goodwill)	1,249		1,249		1,247
Finite-Lived Intangible Assets, Accumulated Amortization	1,000		1,000		981
Intangible assets, less accumulated amortization	249		249		266
Other Intangible Assets
Intangible Assets, Gross (Excluding Goodwill)	57		57		52
Finite-Lived Intangible Assets, Accumulated Amortization	9		9		6
Intangible assets, less accumulated amortization	$ 48		$ 48		$ 47