Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash Flows from Operating Activities
Net income (loss)	$ 250	$ 250
Adjustments to reconcile net income (loss) to net cash flows provided (used) by operating activities:
(Gain) loss on disposal of property and equipment		1
Deferred income tax expense (benefit)	99	73
Trading portfolio activity	(48)	(6)
Net realized investment (gains) losses	(28)	(36)
Equity method investees	(91)	(69)
Amortization of investments	(10)	(23)
Depreciation and amortization	33	20
Changes in:
Receivables, net	(20)	53
Accrued investment income	(42)	(42)
Deferred acquisition costs	(40)	(15)
Insurance reserves	79	99
Other assets	(20)	73
Other liabilities	16	(67)
Other, net	13	1
Total adjustments	(59)	62
Net cash flows provided (used) by operating activities	191	312
Dispositions:
Fixed maturity securities - sales	1,409	1,929
Fixed maturity securities - maturities, calls and redemptions	866	683
Equity securities	51	19
Limited partnerships	58	46
Mortgage loans	1	1
Purchases:
Fixed maturity securities	(2,720)	(2,842)
Equity securities	(12)	(12)
Limited partnerships	(41)	(36)
Origination of Mortgage Loans	(25)	(48)
Change in other investments	3
Change in short term investments	264	(8)
Purchases of property and equipment	(21)	(22)
Other, net	6	3
Net cash flows provided (used) by investing activities	(161)	(287)
Cash Flows from Financing Activities
Dividends paid to common stockholders	(55)	(41)
Stock options exercised	1
Other, net	(2)	(1)
Net cash flows provided (used) by financing activities	(56)	(42)
Effect of foreign exchange rate changes on cash	(7)	1
Net change in cash	(33)	(16)
Cash, beginning of year	156	75
Cash, end of period	$ 123	$ 59