Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows from Operating Activities
Net income (loss)	$ 533	$ 644
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads deferrals and interest, net of amortization	(17)	(176)
Trading securities purchases, sales and maturities, net	113	86
Change in premiums and fees receivable	6	58
Change in accrued investment income		(15)
Change in future contract benefits and other contract holder funds	5	17
Change in reinsurance related assets and liabilities	(347)	(14)
Change in accrued expenses	(180)	(118)
Change in federal income tax accruals	(3)	(54)
Realized (gain) loss	159	38
Amortization of deferred gain on business sold through reinsurance	(37)	(37)
Other	301	153
Net cash provided by (used in) operating activities	533	582
Cash Flows from Investing Activities
Purchases of available-for-sale securities	(5,727)	(4,451)
Sales of available-for-sale securities	2,068	414
Maturities of available-for-sale securities	2,579	2,085
Purchases of other investments	(9,956)	(7,415)
Sales or maturities of other investments	9,211	7,109
Increase (decrease) in payables for collateral on investments	1,640	176
Other	(55)	(52)
Net cash provided by (used in) investing activities	(240)	(2,134)
Cash Flows from Financing Activities
Payment of long-term debt, including current maturities		(250)
Issuance of long-term debt, net of issuance costs		298
Deposits of fixed account values, including the fixed portion of variable	5,015	4,966
Withdrawals of fixed account values, including the fixed portion of variable	(2,769)	(3,135)
Transfers to and from separate accounts, net	(967)	(1,361)
Common stock issued for benefit plans and excess tax benefits	(8)	44
Repurchase of common stock	(475)	(500)
Dividends paid to common stockholders	(122)	(102)
Net cash provided by (used in) financing activities	674	(40)
Net increase (decrease) in cash and invested cash	967	(1,592)
Cash and invested cash as of beginning-of-year	3,146	3,919
Cash and invested cash as of end-of-year	$ 4,113	$ 2,327