Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Intangible assets	$ 321		$ 326
Amortization of Intangible Assets	7	$ 14
Finite-Lived Intangible Assets, Net	307		312
PWIC
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	14		14
Insurance Intangible Asset [Member]
Intangible Assets, Gross (Excluding Goodwill)	1,251		1,247
Finite-Lived Intangible Assets, Accumulated Amortization	990		981
Intangible assets	261		266
Other Intangible Assets
Intangible Assets, Gross (Excluding Goodwill)	52		52
Finite-Lived Intangible Assets, Accumulated Amortization	7		6
Intangible assets	$ 46		$ 47