ASU 2018-12 Transition BS (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Balance Sheet Statements, Captions [Line Items]
Total assets	$ 226,204	$ 215,438	$ 249,731
Future policy benefits	32,149	31,146	39,830
Policyholder Contract Deposit	80,193	72,602	64,290
Market risk benefit liabilities	10,344	10,411	16,062
Total liabilities	220,263	208,924	241,195
Retained earnings (deficit)	(6,542)	(5,418)	(9,128)
Accumulated other comprehensive income (loss)	(5,114)	(5,931)	(199)	$ 5,421
Stockholder's Equity, Including Portion Attributable to Noncontrolling Interest	5,941	6,514	8,536	$ 18,115
Liabilities and Equity	$ 226,204	215,438	249,731
Previously Reported
Condensed Balance Sheet Statements, Captions [Line Items]
Total assets		216,151	247,255
Future policy benefits		41,105	43,589
Policyholder Contract Deposit		74,112	66,195
Market risk benefit liabilities		0	0
Total liabilities		209,287	231,144
Retained earnings (deficit)		(5,717)	(5,653)
Accumulated other comprehensive income (loss)		(5,282)	3,901
Stockholder's Equity, Including Portion Attributable to Noncontrolling Interest		6,864	16,111
Liabilities and Equity		216,151	247,255
Revision of Prior Period, Accounting Standards Update, Adjustment | Accounting Standards Update 2018-12
Condensed Balance Sheet Statements, Captions [Line Items]
Total assets		(713)	2,476
Future policy benefits		(9,959)	(3,759)
Policyholder Contract Deposit		(1,510)	(1,905)
Market risk benefit liabilities		10,411	16,062
Total liabilities		(363)	10,051
Retained earnings (deficit)		299	(3,475)
Accumulated other comprehensive income (loss)		(649)	(4,100)
Stockholder's Equity, Including Portion Attributable to Noncontrolling Interest		(350)	(7,575)
Liabilities and Equity		$ (713)	$ 2,476