Separate Account Assets and Liabilities - Separate Account Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023		Dec. 31, 2022
Separate Account, Liability [Roll Forward]
Beginning balance	$ 73,962	[1]	$ 97,491
Premiums and deposits	1,488		1,744
Policy charges	(1,642)		(1,685)
Surrenders and other benefits	(6,472)		(6,757)
Investment return	9,897		(16,377)
Net transfer from (to) general account	67		133
Other charges	157		(587)
Ending balance	77,457		73,962	[1]
Cash surrender value	75,366		71,747
Variable Annuities
Separate Account, Liability [Roll Forward]
Beginning balance	63,223		82,862
Premiums and deposits	835		1,067
Policy charges	(1,343)		(1,396)
Surrenders and other benefits	(5,378)		(4,923)
Investment return	8,477		(14,450)
Net transfer from (to) general account	25		63
Other charges	0		0
Ending balance	65,839		63,223
Cash surrender value	64,280		61,461
Variable Universal Life
Separate Account, Liability [Roll Forward]
Beginning balance	7,653		9,376
Premiums and deposits	459		425
Policy charges	(292)		(278)
Surrenders and other benefits	(317)		(286)
Investment return	1,250		(1,654)
Net transfer from (to) general account	42		70
Other charges	0		0
Ending balance	8,795		7,653
Cash surrender value	8,263		7,200
Unitized Pooled Pension Funds
Separate Account, Liability [Roll Forward]
Beginning balance	3,086		5,253
Premiums and deposits	194		252
Policy charges	(7)		(11)
Surrenders and other benefits	(777)		(1,548)
Investment return	170		(273)
Net transfer from (to) general account	0		0
Other charges	157		(587)
Ending balance	2,823		3,086
Cash surrender value	$ 2,823		$ 3,086

[1] Certain prior period amounts have been restated. See Note 3 for more information.