Quarterly Results of Operations (Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues
Insurance premiums	$ 1,503	$ 1,496	$ 1,436	$ 1,406	$ 1,360	$ 1,341	$ 1,334	$ 1,324					$ 5,841	$ 5,359	$ 5,122
Fee income	1,397	1,438	1,446	1,502	1,567	1,931	1,603	1,529					5,783	6,630	6,120
Net investment income	1,343	1,241	1,338	1,352	1,374	1,510	1,509	1,446					5,274	5,839	5,264
Realized gain (loss)	(124)	11	70	257	700	(32)	(169)	212	$ 327	$ 43	$ 338	$ 11	214	711	(526)
Amortization of deferred gain (loss) on business sold through reinsurance	8	9	10	10	10	8	7	7	20	14	29	22	37	32	33
Other revenues	172	162	133	154	176	149	162	170					621	657	553
Total revenues	4,299	4,357	4,433	4,681	5,187	4,907	4,446	4,688					17,770	19,228	16,566
Expenses
Interest credited	740	717	701	691	691	742	740	738					2,849	2,911	2,899
Benefits	2,053	4,498	2,051	2,199	2,169	1,839	1,848	2,183					10,801	8,039	8,050
Commissions and other expenses	1,326	1,205	1,077	1,191	1,276	1,841	1,260	1,171					4,799	5,548	4,889
Interest and debt expense	41	36	31	29	28	29	28	29					137	114	125
Spark program expense	48	44	44	31	31	22	21	13					167	87	68
Impairment of intangibles		634									634		634
Total expenses	4,208	7,134	3,904	4,141	4,195	4,473	3,897	4,134					19,387	16,699	16,031
Income (loss) before taxes	91	(2,777)	529	540	992	434	549	554					(1,617)	2,529	535
Federal income tax expense (benefit)	(14)	(488)	86	82	176	65	83	97					(332)	420	(56)
Net income (loss)	105	(2,289)	443	458	816	369	466	457	900	923	(1,389)	1,292	(1,285)	2,109	591
Other comprehensive income (loss), net of tax	960	(4,140)	(5,446)	(4,991)	(400)	(617)	1,721	(3,181)					(13,617)	(2,477)	3,185
Comprehensive income (loss)	1,065	(6,429)	(5,003)	(4,533)	416	(248)	2,187	(2,724)					(14,902)	(368)	$ 3,776
As Previously Reported [Member]
Revenues
Insurance premiums	1,503	1,496	1,436	1,406	1,360	1,341	1,328	1,330					5,841	5,359
Fee income	1,397	1,438	1,446	1,502	1,561	1,927	1,600	1,524					5,783	6,612
Net investment income	1,336	1,272	1,309	1,353	1,376	1,511	1,510	1,447					5,270	5,844
Realized gain (loss)	(152)	5	82	266	74	(24)	(172)	211	347	39	353	16	201	89
Amortization of deferred gain (loss) on business sold through reinsurance	16	17	18	18	18	8	7	7	35	14	52	22	69	40
Other revenues	172	135	163	151	176	149	162	170					621	657
Total revenues	4,272	4,363	4,454	4,696	4,565	4,912	4,435	4,689					17,785	18,601
Expenses
Interest credited	740	717	701	691	686	744	732	731					2,849	2,893
Benefits	2,053	4,498	2,051	2,199	2,169	1,840	1,848	2,182					10,801	8,039
Commissions and other expenses	1,318	1,208	1,081	1,192	1,274	1,839	1,262	1,171					4,799	5,546
Interest and debt expense	41	36	31	29	28	29	28	29					137	114
Spark program expense	48	44	44	31	31	22	21	13					167	87
Impairment of intangibles		634									634		634
Total expenses	4,200	7,137	3,908	4,142	4,188	4,474	3,891	4,126					19,387	16,679
Income (loss) before taxes	72	(2,774)	546	554	377	438	544	563					(1,602)	1,922
Federal income tax expense (benefit)	(17)	(487)	90	85	46	66	82	99					(329)	293
Net income (loss)	89	(2,287)	456	469	331	372	462	464	925	926	(1,362)	1,298	(1,273)	1,629
Other comprehensive income (loss), net of tax	960	(4,134)	(5,450)	(4,993)	(400)	(617)	1,721	(3,181)					(13,617)	(2,477)
Comprehensive income (loss)	1,049	(6,421)	(4,994)	(4,524)	(69)	(245)	2,183	(2,717)					(14,890)	(848)
Restatement Impacts [Member]
Revenues
Insurance premiums							6	(6)
Fee income					6	4	3	5						18
Net investment income	7	(31)	29	(1)	(2)	(1)	(1)	(1)					4	(5)
Realized gain (loss)	28	6	(12)	(9)	626	(8)	3	1	(20)	4	(15)	(5)	13	622
Amortization of deferred gain (loss) on business sold through reinsurance	(8)	(8)	(8)	(8)	(8)				(15)		(23)		(32)	(8)
Other revenues		27	(30)	3
Total revenues	27	(6)	(21)	(15)	622	(5)	11	(1)					(15)	627
Expenses
Interest credited					5	(2)	8	7						18
Benefits						(1)		1
Commissions and other expenses	8	(3)	(4)	(1)	2	2	(2)							2
Total expenses	8	(3)	(4)	(1)	7	(1)	6	8						20
Income (loss) before taxes	19	(3)	(17)	(14)	615	(4)	5	(9)					(15)	607
Federal income tax expense (benefit)	3	(1)	(4)	(3)	130	(1)	1	(2)					(3)	127
Net income (loss)	16	(2)	(13)	(11)	485	(3)	4	(7)	$ (25)	$ (3)	$ (27)	$ (6)	(12)	480
Other comprehensive income (loss), net of tax		(6)	4	2
Comprehensive income (loss)	$ 16	$ (8)	$ (9)	$ (9)	$ 485	$ (3)	$ 4	$ (7)					$ (12)	$ 480