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, 2021	Dec. 31, 2020	Dec. 31, 2019
Insurance [Abstract]
Balance at January 1,	$ 1,099	$ 335	$ 384
Acquisitions (1)	0	814	0
Amortization	(100)	(41)	(42)
Effect of foreign currency translation and other	(27)	(9)	(7)
Balance at December 31,	972	1,099	335
Accumulated amortization	$ 575	$ 475	$ 434