Separate Account Assets and Liabilities - Separate Account Liabilities (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023		Dec. 31, 2022
Separate Account, Liability [Roll Forward]
Beginning balance	$ 73,962	[1]	$ 97,491
Premiums and deposits	383		1,744
Policy charges	(404)		(1,685)
Surrenders and other benefits	(1,506)		(6,757)
Investment return	3,439		(16,377)
Net transfer from (to) general account	6		133
Other charges	61		(587)
Ending balance	75,941		73,962	[1]
Cash surrender value	73,743		71,747
Variable Annuities
Separate Account, Liability [Roll Forward]
Beginning balance	63,223		82,862
Premiums and deposits	204		1,067
Policy charges	(331)		(1,396)
Surrenders and other benefits	(1,250)		(4,923)
Investment return	2,963		(14,450)
Net transfer from (to) general account	5		63
Other charges	0		0
Ending balance	64,814		63,223
Cash surrender value	63,086		61,461
Variable Universal Life
Separate Account, Liability [Roll Forward]
Beginning balance	7,653		9,376
Premiums and deposits	111		425
Policy charges	(71)		(278)
Surrenders and other benefits	(71)		(286)
Investment return	407		(1,654)
Net transfer from (to) general account	1		70
Other charges	0		0
Ending balance	8,030		7,653
Cash surrender value	7,560		7,200
Threadneedle Investment Liabilities
Separate Account, Liability [Roll Forward]
Beginning balance	3,086		5,253
Premiums and deposits	68		252
Policy charges	(2)		(11)
Surrenders and other benefits	(185)		(1,548)
Investment return	69		(273)
Net transfer from (to) general account	0		0
Other charges	61		(587)
Ending balance	3,097		3,086
Cash surrender value	$ 3,097		$ 3,086

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