Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash Flows from Operating Activities
Net income (loss)	$ 644	$ 727
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	(176)	(213)
Trading securities purchases, sales and maturities, net	86	25
Change in premiums and fees receivable	58	(45)
Change in accrued investment income	(15)	(52)
Change in future contract benefits and other contract holder funds	17	188
Change in reinsurance related assets and liabilities	(14)	(33)
Change in accrued expenses	(118)	(158)
Change in federal income tax accruals	(54)	86
Realized (gain) loss	38	(16)
Amortization of deferred gain on business sold through reinsurance	(37)	(37)
Other	153	(101)
Net cash provided by (used in) operating activities	582	371
Cash Flows from Investing Activities
Purchases of available-for-sale securities	(4,451)	(4,186)
Sales of available-for-sale securities	414	173
Maturities of available-for-sale securities	2,085	2,476
Purchases of other investments	(7,415)	(1,322)
Sales or maturities of other investments	7,109	1,452
Increase (decrease) in payables for collateral on investments	176	333
Other	(52)	(31)
Net cash provided by (used in) investing activities	(2,134)	(1,105)
Cash Flows from Financing Activities
Payment of long-term debt, including current maturities	(250)	(500)
Issuance of long-term debt, net of issuance costs	298
Deposits of fixed account values, including the fixed portion of variable	4,966	4,884
Withdrawals of fixed account values, including the fixed portion of variable	(3,135)	(2,765)
Transfers to and from separate accounts, net	(1,361)	(1,356)
Common stock issued for benefit plans and excess tax benefits	44
Repurchase of common stock	(500)	(300)
Dividends paid to common stockholders	(102)	(84)
Net cash provided by (used in) financing activities	(40)	(121)
Net increase (decrease) in cash and invested cash	(1,592)	(855)
Cash and invested cash as of beginning-of-year	3,919	2,364
Cash and invested cash as of end-of-period	$ 2,327	$ 1,509