Adoption of ASU 2018-12 (Summary of Restated Consolidated Statements of Comprehensive Income (Loss)) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Fee income	$ 1,379	$ 1,458
Realized gain (loss)	(828)	181
Total revenues	3,814	4,720
Benefits	2,291	2,156
Market risk benefit (gain) loss	619	(1,359)
Policyholder liability remeasurement (gain) loss	(118)	41
Commissions and other expenses	1,300	1,253
Total expenses	4,984	2,885
Income (loss) before taxes	(1,170)	1,835
Federal income tax expense (benefit)	(289)	353
Net income (loss)	(881)	1,482
Unrealized investment gain (loss)	1,774	(7,498)
Market risk benefit non-performance risk gain (loss)	1,025	20
Policyholder liability discount remeasurement gain (loss)	(202)	811
Total other comprehensive income (loss), net of tax	2,598	(6,669)
Comprehensive income (loss)	$ 1,717	$ (5,187)
Net Income (Loss) Per Common Share
Basic (in dollars per share)	$ (5.35)	$ 8.50
Diluted (in dollars per share)	$ (5.37)	$ 8.39
Accounting Standards Update 2018-12 [Member] | As Previously Reported [Member]
Fee income		$ 1,568
Realized gain (loss)		25
Total revenues		4,674
Benefits		2,568
Commissions and other expenses		1,235
Total expenses		4,597
Income (loss) before taxes		77
Federal income tax expense (benefit)		(15)
Net income (loss)		92
Unrealized investment gain (loss)		(5,187)
Total other comprehensive income (loss), net of tax		(5,189)
Comprehensive income (loss)		$ (5,097)
Net Income (Loss) Per Common Share
Basic (in dollars per share)		$ 0.53
Diluted (in dollars per share)		$ 0.52
Accounting Standards Update 2018-12 [Member] | Restatement Impacts [Member]
Fee income		$ (110)
Realized gain (loss)		156
Total revenues		46
Benefits		(412)
Market risk benefit (gain) loss		(1,359)
Policyholder liability remeasurement (gain) loss		41
Commissions and other expenses		18
Total expenses		(1,712)
Income (loss) before taxes		1,758
Federal income tax expense (benefit)		368
Net income (loss)		1,390
Unrealized investment gain (loss)		(2,311)
Market risk benefit non-performance risk gain (loss)		20
Policyholder liability discount remeasurement gain (loss)		811
Total other comprehensive income (loss), net of tax		(1,480)
Comprehensive income (loss)		$ (90)
Net Income (Loss) Per Common Share
Basic (in dollars per share)		$ 7.97
Diluted (in dollars per share)		$ 7.87