Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (VODA and VOCRA) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Insurance [Abstract]
Balance at January 1,	$ 972	$ 1,099	$ 335
Acquisitions (1)	0	0	814
Amortization	(92)	(100)	(41)
Effect of foreign currency translation and other	(4)	(27)	(9)
Balance at December 31,	876	972	1,099
Accumulated amortization	$ 667	$ 575	$ 475