Adoption of ASU 2018-12 (Summary of Restated Consolidated Statements of Comprehensive Income (Loss)) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Fee income	$ 1,365	$ 1,409	$ 2,744	$ 2,867
Realized gain (loss)	(1,784)	1,101	(2,612)	1,282
Total revenues	2,929	5,577	6,743	10,297
Benefits	2,192	1,954	4,483	4,110
Interest credited	808	710	1,593	1,407
Market risk benefit (gain) loss	(2,023)	477	(1,404)	(881)
Policyholder liability remeasurement (gain) loss	(110)	85	(228)	126
Commissions and other expenses	1,335	1,207	2,637	2,460
Total expenses	2,327	4,545	7,311	7,431
Income (loss) before taxes	602	1,032	(568)	2,866
Federal income tax expense (benefit)	91	192	(198)	545
Net income (loss)	511	840	(370)	2,321
Unrealized investment gain (loss)	(513)	(6,655)	1,261	(14,153)
Market risk benefit non-performance risk gain (loss)	(924)	354	101	374
Policyholder liability discount rate remeasurement gain (loss)	112	710	(90)	1,521
Total other comprehensive income (loss), net of tax	(1,350)	(5,595)	1,248	(12,264)
Comprehensive income (loss)	$ (839)	$ (4,755)	$ 878	$ (9,943)
Net Income (Loss) Per Common Share
Basic (in dollars per share)	$ 2.95	$ 4.91	$ (2.40)	$ 13.44
Diluted (in dollars per share)	$ 2.94	$ 4.83	$ (2.41)	$ 13.25
Accounting Standards Update 2018-12 [Member]
Fee income		$ 1,409
Realized gain (loss)		1,101
Total revenues		5,577
Benefits		1,954
Interest credited		710
Market risk benefit (gain) loss		477
Policyholder liability remeasurement (gain) loss		85
Commissions and other expenses		1,207
Total expenses		4,545
Income (loss) before taxes		1,032
Federal income tax expense (benefit)		192
Net income (loss)		840
Unrealized investment gain (loss)		(6,655)
Market risk benefit non-performance risk gain (loss)		354
Policyholder liability discount rate remeasurement gain (loss)		710
Total other comprehensive income (loss), net of tax		(5,595)
Comprehensive income (loss)		$ (4,755)
Net Income (Loss) Per Common Share
Basic (in dollars per share)		$ 4.91
Diluted (in dollars per share)		$ 4.83
Accounting Standards Update 2018-12 [Member] | As Previously Reported [Member]
Fee income		$ 1,506		$ 3,074
Realized gain (loss)		515		540
Total revenues		5,088		9,762
Benefits		2,890		5,458
Interest credited		706		1,403
Commissions and other expenses		1,123		2,358
Total expenses		4,831		9,428
Income (loss) before taxes		257		334
Federal income tax expense (benefit)		29		15
Net income (loss)		228		319
Unrealized investment gain (loss)		(5,585)		(10,772)
Total other comprehensive income (loss), net of tax		(5,589)		(10,778)
Comprehensive income (loss)		$ (5,361)		$ (10,458)
Net Income (Loss) Per Common Share
Basic (in dollars per share)		$ 1.34		$ 1.87
Diluted (in dollars per share)		$ 1.28		$ 1.80
Accounting Standards Update 2018-12 [Member] | Restatement Impacts [Member]
Fee income		$ (97)		$ (207)
Realized gain (loss)		586		742
Total revenues		489		535
Benefits		(936)		(1,348)
Interest credited		4		4
Market risk benefit (gain) loss		477		(881)
Policyholder liability remeasurement (gain) loss		85		126
Commissions and other expenses		84		102
Total expenses		(286)		(1,997)
Income (loss) before taxes		775		2,532
Federal income tax expense (benefit)		163		530
Net income (loss)		612		2,002
Unrealized investment gain (loss)		(1,070)		(3,381)
Market risk benefit non-performance risk gain (loss)		354		374
Policyholder liability discount rate remeasurement gain (loss)		710		1,521
Total other comprehensive income (loss), net of tax		(6)		(1,486)
Comprehensive income (loss)		$ 606		$ 515
Net Income (Loss) Per Common Share
Basic (in dollars per share)		$ 3.57		$ 11.57
Diluted (in dollars per share)		$ 3.55		$ 11.45