Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended		6 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Flows from Operating Activities
Net income (loss)	$ 92	$ 219	$ 319	$ 864	$ (2,264)	$ 1,180	$ (2,241)	$ 1,887	$ 499
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Realized (gain) loss	(25)	180	(540)	179	(752)	100	(345)	(414)	513
Sales and maturities (purchases) of trading securities, net	(187)	118	117	230	163	239	300	(87)	266
Amortization of deferred gain on business sold through reinsurance	(11)	(9)	(22)	(17)	(31)	(27)	(42)	(38)	(41)
Impairment of intangibles					634		634
Change in:
Deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads deferrals and interest, net of amortization	31	54		112	74	346	118	312	48
Premiums and fees receivable	(91)	(161)	(76)	(97)	(3)	(98)	(54)	(93)	(21)
Accrued investment income	(35)	(41)	(40)	(10)	(80)	(34)	(67)	16	(84)
Insurance liabilities and reinsurance-related balances	1,275	(762)	3,116	(1,431)	6,166	(1,779)	5,958	(1,955)	(699)
Accrued expenses	(262)	(40)	(371)	42	(402)	246	(89)	392	(18)
Federal income tax accruals	39	35	69	166	(498)	215	(535)	361	(98)
Other	(74)	(216)	135	(251)	383	(263)	399	(213)	169
Net cash provided by (used in) operating activities	752	(623)	2,707	(213)	3,390	125	4,036	168	534
Cash Flows from Investing Activities
Purchases of available-for-sale securities and equity securities	(3,934)	(3,854)	(8,204)	(8,324)	(12,008)	(11,917)	(14,813)	(16,915)	(16,761)
Sales of available-for-sale securities and equity securities	105	571	308	1,269	1,196	1,452	2,297	2,268	1,426
Maturities of available-for-sale securities	1,604	1,913	3,231	4,700	4,333	7,055	5,453	9,621	5,354
Purchases of alternative investments	(161)	(163)	(329)	(361)	(484)	(506)	(664)	(757)	(396)
Sales and repayments of alternative investments	131	54	183	128	383	258	446	377	171
Issuance of mortgage loans on real estate	(539)	(887)	(1,366)	(1,632)	(1,924)	(2,210)	(2,507)	(3,079)	(1,800)
Repayment and maturities of mortgage loans on real estate	717	403	1,428	851	1,872	1,274	2,255	1,881	1,154
Repayment (issuance) of policy loans, net	25	(76)	(5)	16	17	48	5	62	50
Net change in collateral on investments, derivatives and related settlements	16	1,341	(1,893)	1,888	(3,155)	2,312	(4,070)	3,261	1,474
Other	(104)	(33)	(101)	(71)	(93)	(219)	(48)	(303)	(153)
Net cash provided by (used in) investing activities	(2,140)	(731)	(6,748)	(1,536)	(9,863)	(2,453)	(11,646)	(3,584)	(9,481)
Cash Flows from Financing Activities
Payment of long-term debt, including current maturities	(300)		(300)		(300)		(300)		(1,096)
Issuance of long-term debt, net of issuance costs	297		297		296		296		1,289
Payment related to modification or early extinguishment of debt						(8)		(8)	(13)
Payment related to sale-leaseback transactions	(4)		(47)		(52)		(70)	(59)	(47)
Proceeds from certain financing arrangements			53	50	53	50	186	159	109
Deposits of fixed account values, including the fixed portion of variable	3,046	3,140	6,900	6,378	11,062	9,152	15,229	12,643	14,034
Withdrawals of fixed account values, including the fixed portion of variable	(1,884)	(1,773)	(3,352)	(3,276)	(4,997)	(4,961)	(6,913)	(6,554)	(6,113)
Transfers from (to) separate accounts, net	70	(130)	116	(255)	71	(254)	(195)	(397)	528
Common stock issued for benefit plans	(10)	7	(14)	12	(15)	14	(16)	20	(7)
Issuance of preferred stock, net of issuance costs							986
Repurchase of common stock	(400)	(105)	(500)	(255)	(550)	(455)	(550)	(1,105)	(275)
Dividends paid to common stockholders	(79)	(80)	(157)	(161)	(234)	(241)	(310)	(319)	(311)
Other		(63)		(63)	(1)	(63)	(2)	(60)	(6)
Net cash provided by (used in) financing activities	736	996	2,996	2,430	5,333	3,234	8,341	4,320	8,092
Net increase (decrease) in cash, invested cash and restricted cash	(652)	(358)	(1,045)	681	(1,140)	906	731	904	(855)
Cash, invested cash and restricted cash as of beginning-of-year	2,612	1,708	2,612	1,708	2,612	1,708	2,612	1,708	2,563
Cash, invested cash and restricted cash as of end-of-period	$ 1,960	$ 1,350	$ 1,567	$ 2,389	$ 1,472	$ 2,614	$ 3,343	$ 2,612	$ 1,708