Adoption of ASU 2018-12 - Summary of Effect on Previously Reported Consolidated Statements of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash Flows from Operating Activities
Net income (loss)	$ (1,788)	$ (1,675)	$ 3,297
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Realized (gain) loss	4,934	(418)	(859)
Market risk benefit (gain) loss	(1,135)	296	(1,554)
Change in:
Deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads	642	495	496
Insurance liabilities and reinsurance-related balances	(2,499)	652	(893)
Accrued expenses	223	(101)	377
Federal income tax accruals	(563)	(376)	708
Other	$ 324	406	(351)
As Previously Reported
Cash Flows from Operating Activities
Net income (loss)		(1,285)	2,109
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Realized (gain) loss		(214)	(711)
Change in:
Deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads		45	289
Insurance liabilities and reinsurance-related balances		727	(862)
Accrued expenses		(98)	370
Federal income tax accruals		(271)	391
Other		375	(365)
Accounting Standards Update 2018-12 | Adoption of New Accounting Standard
Cash Flows from Operating Activities
Net income (loss)		(390)	1,188
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Realized (gain) loss		(204)	(148)
Market risk benefit (gain) loss		296	(1,554)
Change in:
Deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads		450	207
Insurance liabilities and reinsurance-related balances		(75)	(31)
Accrued expenses		(3)	7
Federal income tax accruals		(105)	317
Other		$ 31	$ 14