Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash Flows from Operating Activities
Net income (loss)	$ 556	$ 564
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads deferrals and interest, net of amortization	(217)	(114)
Trading securities purchases, sales and maturities, net	63	67
Change in premiums and fees receivable	(50)	20
Change in accrued investment income	(37)	(40)
Change in future contract benefits and other contract holder funds	(293)	120
Change in reinsurance related assets and liabilities	(59)	(111)
Change in federal income tax accruals	157	202
Realized (gain) loss	76	43
(Income) Loss attributable to equity method investments	(37)	(82)
Amortization of deferred gain on business sold through reinsurance	(37)	(37)
(Gain) loss on disposal of discontinued operations		1
Other	(67)	(19)
Net cash provided by (used in) operating activities	55	614
Cash Flows from Investing Activities
Purchases of available-for-sale securities	(6,726)	(5,717)
Sales of available-for-sale securities	449	369
Maturities of available-for-sale securities	3,387	2,983
Purchases of other investments	(1,170)	(1,398)
Sales or maturities of other investments	1,245	1,451
Increase (decrease) in payables for collateral on investments	71	1,337
Other	(59)	(47)
Net cash provided by (used in) investing activities	(2,803)	(1,022)
Cash Flows from Financing Activities
Issuance of long-term debt, net of issuance costs	50	298
Deposits of fixed account values, including the fixed portion of variable	5,275	4,979
Withdrawals of fixed account values, including the fixed portion of variable	(2,513)	(2,611)
Transfers to and from separate accounts, net	(1,405)	(1,160)
Common stock issued for benefit plans and excess tax benefits		(5)
Repurchase of common stock	(250)	(300)
Dividends paid to common and preferred stockholders	(65)	(46)
Net cash provided by (used in) financing activities	1,092	1,155
Net increase (decrease) in cash and invested cash, including discontinued operations	(1,656)	747
Cash and invested cash, including discontinued operations, as of beginning-of-year	4,230	4,510
Cash and invested cash, including discontinued operations, as of end-of-period	$ 2,574	$ 5,257