Adoption of ASU 2018-12 (Summary of Effect on Previously Reported Consolidated Statements of Cash Flows) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Cash Flows from Operating Activities
Net income (loss)	$ 315	$ (2,292)	$ (1,569)	$ (2,074)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Realized (gain) loss	867	(33)	4,513	(541)
Market risk benefit (gain) loss	$ (1,014)	(74)	(1,182)	755
Change in:
Deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads			501	370
Insurance liabilities and reinsurance-related balances			(1,327)	1,944
Accrued expenses			(67)	(379)
Federal income tax accruals			(415)	(489)
Other			$ (145)	419
Accounting Standards Update 2018-12 [Member] | As Previously Reported [Member]
Cash Flows from Operating Activities
Net income (loss)		(2,289)		(1,388)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Realized (gain) loss		(11)		(338)
Change in:
Deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads				3
Insurance liabilities and reinsurance-related balances				2,016
Accrued expenses				(375)
Federal income tax accruals				(308)
Other				395
Accounting Standards Update 2018-12 [Member] | Restatement Impacts [Member]
Cash Flows from Operating Activities
Net income (loss)		(3)		(686)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Realized (gain) loss		(22)		(203)
Market risk benefit (gain) loss		$ (74)		755
Change in:
Deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads				367
Insurance liabilities and reinsurance-related balances				(72)
Accrued expenses				(4)
Federal income tax accruals				(181)
Other				$ 24