CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash Flows from Operating Activities
Net income (loss)	$ 569	$ 617
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	(114)	(215)
Trading securities purchases, sales and maturities, net	67	26
Change in premiums and fees receivable	20	(35)
Change in accrued investment income	(40)	(61)
Change in future contract benefits and other contract holder funds	120	371
Change in reinsurance related assets and liabilities	(111)	(72)
Change in federal income tax accruals	197	297
Realized gain (loss)	43	7
(Income) loss attributable to equity method investments	(81)	(75)
Amortization of deferred gain on business sold through reinsurance	(38)	(37)
(Gain) loss on disposal of discontinued operations	1	0
Other	(19)	55
Net cash provided by (used in) operating activities	614	878
Cash Flows from Investing Activities
Purchases of available-for-sale securities	(5,717)	(5,901)
Sales of available-for-sale securities	369	1,042
Maturities of available-for-sale securities	2,983	2,857
Purchases of other investments	(1,398)	(1,701)
Sales or maturities of other investments	1,451	1,527
Increase (decrease) in payables for collateral on investments	1,337	146
Other	(47)	(42)
Net cash provided by (used in) investing activities	(1,022)	(2,072)
Cash Flows from Financing Activities
Issuance of long-term debt, net of issuance costs	298	298
Increase (decrease) in commercial paper, net	0	(100)
Deposits of fixed account values, including the fixed portion of variable	4,979	5,335
Withdrawals of fixed account values, including the fixed portion of variable	(2,611)	(2,515)
Transfers to and from separate accounts, net	(1,160)	(1,391)
Common stock issued for benefit plans and excess tax benefits	(5)	(5)
Repurchase of common stock	(300)	(226)
Dividends paid to common and preferred stockholders	(46)	(31)
Net cash provided by (used in) financing activities	1,155	1,365
Net increase (decrease) in cash and invested cash, including discontinued operations	747	171
Cash and invested cash, including discontinued operations, as of beginning-of-year	4,510	2,741
Cash and invested cash, including discontinued operations, as of end-of-period	$ 5,257	$ 2,912