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, 2023	Dec. 31, 2022	Dec. 31, 2021
Insurance [Abstract]
Balance at January 1,	$ 876	$ 972	$ 1,099
Acquisitions	0	0	0
Amortization	(88)	(92)	(100)
Effect of foreign currency translation and other	6	(4)	(27)
Balance at December 31,	794	876	972
Accumulated amortization	$ 755	$ 667	$ 575