Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities
Net income (loss)	$ 1,405	$ 499	$ 886
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Realized (gain) loss	212	513	610
Trading securities purchases, sales and maturities, net	(108)	266	(2,510)
Amortization of deferred gain on business sold through reinsurance	(46)	(41)	(31)
Change in:
Deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads deferrals and interest, net of amortization	315	48	(409)
Premiums and fees receivable	(93)	(21)	105
Accrued investment income	16	(84)	(29)
Insurance liabilities and reinsurance-related balances	(1,954)	(699)	(1,613)
Accrued expenses	389	(18)	107
Federal income tax accruals	232	(98)	(227)
Other	(217)	169	425
Net cash provided by (used in) operating activities	151	534	(2,686)
Cash Flows from Investing Activities
Purchases of available-for-sale securities and equity securities	(16,893)	(16,761)	(15,326)
Sales of available-for-sale securities and equity securities	2,268	1,426	6,807
Maturities of available-for-sale securities	9,621	5,354	6,571
Purchases of alternative investments	(757)	(396)	(433)
Sales and repayments of alternative investments	377	171	131
Issuance of mortgage loans on real estate	(3,084)	(1,800)	(4,262)
Repayment and maturities of mortgage loans on real estate	1,881	1,154	1,163
Issuance (repayment) of policy loans, net	62	50	32
Net change in collateral on investments, derivatives and related settlements	3,261	1,474	79
Other	(303)	(153)	(261)
Net cash provided by (used in) investing activities	(3,567)	(9,481)	(5,499)
Cash Flows from Financing Activities
Payment of long-term debt, including current maturities		(1,096)	(308)
Issuance of long-term debt, net of issuance costs		1,289	744
Payment related to modification or early extinguishment of debt	(8)	(13)	(42)
Payment related to sale-leaseback transactions	(59)	(47)	(83)
Proceeds from certain financing arrangements	159	109	107
Deposits of fixed account values, including the fixed portion of variable	12,639	14,034	16,069
Withdrawals of fixed account values, including the fixed portion of variable	(6,607)	(6,113)	(5,849)
Transfers to and from separate accounts, net	(340)	528	(1,362)
Common stock issued for benefit plans	20	(7)	(20)
Repurchase of common stock	(1,105)	(275)	(550)
Dividends paid to common stockholders	(319)	(311)	(303)
Other	(60)	(6)
Net cash provided by (used in) financing activities	4,320	8,092	8,403
Net increase (decrease) in cash, invested cash and restricted cash	904	(855)	218
Cash, invested cash and restricted cash as of beginning-of-year	1,708	2,563	2,345
Cash, invested cash and restricted cash as of end-of-year	$ 2,612	$ 1,708	$ 2,563