Adoption of ASU 2018-12 (Summary of Effect on Previously Reported Consolidated Statements of Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues
Fee income	$ 1,307	$ 1,349	$ 2,628	$ 2,743
Realized gain (loss)	(3,252)	148	(3,646)	508
Total revenues	1,247	4,414	5,264	9,090
Expenses
Benefits	1,676	1,922	3,872	4,024
Interest credited	804	706	1,585	1,399
Market risk benefit (gain) loss	(1,238)	716	(168)	830
Policyholder liability remeasurement (gain) loss	(109)	85	(227)	126
Commissions and other expenses	1,281	1,158	2,530	2,370
Total expenses	2,502	4,662	7,749	8,884
Income (loss) before taxes	(1,255)	(248)	(2,485)	206
Federal income tax expense (benefit)	(299)	(76)	(601)	(12)
Net income (loss)	(956)	(172)	(1,884)	218
Other comprehensive income (loss), net of tax:
Unrealized investment gain (loss)	2,119	(6,518)	3,896	(13,818)
Market risk benefit gain (loss)		354		374
Policyholder liability discount rate remeasurement gain (loss)	102	667	(88)	1,426
Total other comprehensive income (loss), net of tax	1,296	(5,496)	3,909	(12,018)
Comprehensive income (loss)	$ 340	(5,668)	$ 2,025	(11,800)
Accounting Standards Update 2018-12 [Member] | As Previously Reported [Member]
Revenues
Fee income		1,446		2,948
Realized gain (loss)		70		327
Total revenues		4,433		9,114
Expenses
Benefits		2,051		4,250
Interest credited		701		1,392
Commissions and other expenses		1,077		2,268
Total expenses		3,904		8,045
Income (loss) before taxes		529		1,069
Federal income tax expense (benefit)		86		168
Net income (loss)		443		901
Other comprehensive income (loss), net of tax:
Unrealized investment gain (loss)		(5,447)		(10,437)
Total other comprehensive income (loss), net of tax		(5,446)		(10,437)
Comprehensive income (loss)		(5,003)		(9,536)
Accounting Standards Update 2018-12 [Member] | Restatement Impacts [Member]
Revenues
Fee income		(97)		(205)
Realized gain (loss)		78		181
Total revenues		(19)		(24)
Expenses
Benefits		(129)		(226)
Interest credited		5		7
Market risk benefit (gain) loss		716		830
Policyholder liability remeasurement (gain) loss		85		126
Commissions and other expenses		81		102
Total expenses		758		839
Income (loss) before taxes		(777)		(863)
Federal income tax expense (benefit)		(162)		(180)
Net income (loss)		(615)		(683)
Other comprehensive income (loss), net of tax:
Unrealized investment gain (loss)		(1,071)		(3,381)
Market risk benefit gain (loss)		354		374
Policyholder liability discount rate remeasurement gain (loss)		667		1,426
Total other comprehensive income (loss), net of tax		(50)		(1,581)
Comprehensive income (loss)		$ (665)		$ (2,264)