Adoption Of ASU 2018-12 (Summary Of Restated Consolidated Statements Of Comprehensive Income (Loss)) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Fee income	$ 1,363	$ 1,381	$ 4,107	$ 4,249
Realized gain (loss)	(453)	249	(3,066)	1,531
Total revenues	4,203	4,672	10,946	14,969
Benefits	2,152	2,149	6,635	6,259
Interest credited	831	726	2,424	2,133
Market risk benefit (gain) loss	(1,428)	(798)	(2,832)	(1,679)
Policyholder liability remeasurement (gain) loss	159	2,692	(68)	2,818
Commissions and other expenses	1,335	1,280	3,970	3,741
Total expenses	3,169	6,798	10,480	14,229
Income (loss) before taxes	1,034	(2,126)	466	740
Federal income tax expense (benefit)	181	(350)	(17)	195
Net income (loss)	853	(1,776)	483	545
Unrealized investment gain (loss)	(2,896)	(5,055)	(1,635)	(19,207)
Market risk benefit non-performance risk gain (loss)	(844)	(150)	(742)	224
Policyholder liability discount rate remeasurement gain (loss)	364	549	274	2,070
Total other comprehensive income (loss), net of tax	(3,376)	(4,660)	(2,128)	(16,924)
Comprehensive income (loss)	$ (2,523)	$ (6,436)	$ (1,645)	$ (16,379)
Net Income (Loss) Per Common Share
Basic (in dollars per share)	$ 4.82	$ (10.46)	$ 2.43	$ 3.18
Diluted (in dollars per share)	$ 4.79	$ (10.47)	$ 2.40	$ 3.10
Accounting Standards Update 2018-12 [Member]
Fee income		$ 1,381
Realized gain (loss)		249
Total revenues		4,672
Benefits		2,149
Interest credited		726
Market risk benefit (gain) loss		(798)
Policyholder liability remeasurement (gain) loss		2,692
Commissions and other expenses		1,280
Total expenses		6,798
Income (loss) before taxes		(2,126)
Federal income tax expense (benefit)		(350)
Net income (loss)		(1,776)
Unrealized investment gain (loss)		(5,055)
Market risk benefit non-performance risk gain (loss)		(150)
Policyholder liability discount rate remeasurement gain (loss)		549
Total other comprehensive income (loss), net of tax		(4,660)
Comprehensive income (loss)		$ (6,436)
Net Income (Loss) Per Common Share
Basic (in dollars per share)		$ (10.46)
Diluted (in dollars per share)		$ (10.47)
Accounting Standards Update 2018-12 [Member] | As Previously Reported [Member]
Fee income		$ 1,527		$ 4,601
Realized gain (loss)		212		752
Total revenues		4,781		14,542
Benefits		5,103		10,561
Interest credited		722		2,125
Commissions and other expenses		1,355		3,714
Total expenses		7,929		17,358
Income (loss) before taxes		(3,148)		(2,816)
Federal income tax expense (benefit)		(565)		(552)
Net income (loss)		(2,583)		(2,264)
Unrealized investment gain (loss)		(4,287)		(15,058)
Total other comprehensive income (loss), net of tax		(4,291)		(15,069)
Comprehensive income (loss)		$ (6,874)		$ (17,333)
Net Income (Loss) Per Common Share
Basic (in dollars per share)		$ (15.22)		$ (13.18)
Diluted (in dollars per share)		$ (15.23)		$ (13.23)
Accounting Standards Update 2018-12 [Member] | Restatement Impacts [Member]
Fee income		$ (146)		$ (352)
Realized gain (loss)		37		779
Total revenues		(109)		427
Benefits		(2,954)		(4,302)
Interest credited		4		8
Market risk benefit (gain) loss		(798)		(1,679)
Policyholder liability remeasurement (gain) loss		2,692		2,818
Commissions and other expenses		(75)		27
Total expenses		(1,131)		(3,129)
Income (loss) before taxes		1,022		3,556
Federal income tax expense (benefit)		215		747
Net income (loss)		807		2,809
Unrealized investment gain (loss)		(768)		(4,149)
Market risk benefit non-performance risk gain (loss)		(150)		224
Policyholder liability discount rate remeasurement gain (loss)		549		2,070
Total other comprehensive income (loss), net of tax		(369)		(1,855)
Comprehensive income (loss)		$ 438		$ 954
Net Income (Loss) Per Common Share
Basic (in dollars per share)		$ 4.76		$ 16.36
Diluted (in dollars per share)		$ 4.76		$ 16.33