Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (Deferred Sales Inducements) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred Policy Acquisition Costs and Present Value of Future Insurance Profits, Net [Abstract]
Beginning Balance of DSI	$ 295	$ 362	$ 391
Capitalization of DSI	1	2	2
Amortization of DSI	(3)	(69)	(36)
Unrealized investment gains (losses) of DSI	0	0	5
Ending Balance of DSI	$ 293	$ 295	$ 362