Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash Flows from Operating Activities
Net income (loss)	$ 250	$ 229
Adjustments to reconcile net income (loss) to net cash flows provided (used) by operating activities:
(Income) loss from discontinued operations		1
(Gain) loss on disposal of property and equipment	1	9
Deferred income tax expense (benefit)	73	89
Trading portfolio activity	(6)	6
Net realized investment (gains) losses, net of participating policyholders' interests	(36)	(13)
Equity method investees	(69)	(104)
Amortization of investments	(23)	(21)
Depreciation	20	19
Changes in:
Receivables, net	53	71
Accrued investment income	(42)	(44)
Deferred acquisition costs	(15)	(15)
Insurance reserves	99	45
Other assets	73	(4)
Other liabilities	(67)	(155)
Other, net	1	1
Total adjustments	62	(115)
Net cash flows provided (used) by operating activities-continuing operations	312	114
Net cash flows provided (used) by operating activities-discontinued operations		(2)
Net cash flows provided (used) by operating activities-total	312	112
Cash Flows from Investing Activities
Purchases of fixed maturity securities	(2,842)	(3,480)
Proceeds from fixed maturity securities:
Sales	1,929	1,881
Maturities, calls and redemptions	683	965
Purchases of equity securities	(12)	(34)
Proceeds from sales of equity securities	19	128
Origination of mortgage loans	(48)	(31)
Change in short term investments	(8)	548
Change in other investments	10	(43)
Purchases of property and equipment	(22)	(11)
Other, net	4	1
Net cash flows provided (used) by investing activities-continuing operations	(287)	(76)
Net cash flows provided (used) by investing activities-discontinued operations		2
Net cash flows provided (used) by investing activities-total	(287)	(74)
Cash Flows from Financing Activities
Dividends paid to common stockholders	(41)	(27)
Proceeds from the issuance of debt		396
Repayment of debt		(409)
Stock options exercised		6
Other, net	(1)	(2)
Net cash flows provided (used) by financing activities-continuing operations	(42)	(36)
Net cash flows provided (used) by financing activities-discontinued operations
Net cash flows provided (used) by financing activities-total	(42)	(36)
Effect of foreign exchange rate changes on cash	1	2
Net change in cash	(16)	4
Cash, beginning of year	75	77
Cash, end of period	59	81
Cash-continuing operations	59	81
Cash-discontinued operations
Cash	$ 59	$ 81