Deferred Policy Acquisition Costs, Value of Business Acquired and Other Policy-Related Intangibles (DAC and VOBA) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Deferred Policy Acquisition Costs and Present Value of Future Insurance Profits, Net [Abstract]
Beginning Balance of DAC	$ 13,643	$ 13,446	$ 14,790
Capitalization of DAC	2,558	2,718	3,013
Net investment gains (losses) of DAC and net derivative gains (losses) of DAC	105	(100)	(152)
Other expenses of DAC	(1,920)	(2,268)	(2,773)
Total amortization of DAC	(1,815)	(2,368)	(2,925)
Unrealized investment gains (losses) of DAC	7,166	811	(1,312)
Effect of foreign currency translation and other of DAC	(688)	(861)	76
Reclassified to assets held-for-sale (1)	0	(103)	(196)
Ending Balance of DAC	20,864	13,643	13,446
Beginning Balance of VOBA	2,418	2,943	3,043
Net investment gains (losses) of VOBA and net derivative gains (losses) of VOBA	0	0	(2)
Other expenses of VOBA	(116)	(187)	(233)
Total amortization of VOBA	(116)	(187)	(235)
Unrealized investment gains (losses) of VOBA	17	11	(4)
Effect of foreign currency translation and other of VOBA	(200)	(314)	139
Reclassified to assets held-for-sale (1)	0	(35)	0
Ending Balance of VOBA	2,119	2,418	2,943
Balance at December 31,	$ 22,983	$ 16,061	$ 16,389