Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash Flows from Operating Activities
Net income (loss)	$ (42)	$ 616
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Realized (gain) loss	671	480
Trading securities purchases, sales and maturities, net	(33)	(2,115)
Amortization of deferred gain on business sold through reinsurance	(22)	(15)
Deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads deferrals and interest, net of amortization	(177)	(109)
Change in premiums and fees receivable	(25)	17
Change in accrued investment income	(20)	(27)
Change in future contract benefits and other contract holder funds	770	(864)
Change in reinsurance related assets and liabilities	(50)	(457)
Change in accrued expenses	(296)	(93)
Change in federal income tax accruals	(85)	(47)
Other	280	52
Net cash provided by (used in) operating activities	971	(2,562)
Cash Flows from Investing Activities
Purchases of available-for-sale securities and equity securities	(8,732)	(7,243)
Sales of available-for-sale securities and equity securities	1,789	5,114
Maturities of available-for-sale securities	2,389	3,322
Purchases of alternative investments	(165)	(184)
Sales and repayments of alternative investments	81	66
Issuance of mortgage loans on real estate	(1,081)	(2,286)
Repayment and maturities of mortgage loans on real estate	609	407
Issuance (repayment) of policy loans, net	(74)	25
Net change in collateral on investments, derivatives and related settlements	1,910	844
Other	(90)	(124)
Net cash provided by (used in) investing activities	(3,364)	(59)
Cash Flows from Financing Activities
Payment of long-term debt, including current maturities	(1,096)
Issuance of long-term debt, net of issuance costs	1,289
Payment related to early extinguishment of debt	(13)
Proceeds from certain financing arrangements	69	50
Deposits of fixed account values, including the fixed portion of variable	7,271	7,886
Withdrawals of fixed account values, including the fixed portion of variable	(3,314)	(2,975)
Transfers to and from separate accounts, net	216	(894)
Common stock issued for benefit plans	(10)	(24)
Repurchase of common stock	(225)	(300)
Dividends paid to common stockholders	(156)	(153)
Net cash provided by (used in) financing activities	4,031	3,590
Net increase (decrease) in cash, invested cash and restricted cash	1,638	969
Cash, invested cash and restricted cash as of beginning-of-year	2,563	2,345
Cash, invested cash and restricted cash as of end-of-period	$ 4,201	$ 3,314