Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash Flows from Operating Activities
Net income (loss)	$ 716	$ 637
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)	141	95
Trading portfolio activity	2	(13)
Net realized investment (gains) losses	(18)	(66)
Equity method investees	(230)	(68)
Amortization of investments	(20)	(43)
Depreciation and amortization	80	83
Changes in:
Receivables, net	316	348
Accrued investment income	(48)	(46)
Deferred acquisition costs	(23)	(27)
Insurance reserves	(166)	(53)
Other assets	(62)	90
Other liabilities	233	47
Other, net		8
Total adjustments	205	356
Net cash flows provided (used) by operating activities	921	993
Dispositions:
Fixed maturity securities - sales	4,830	4,761
Fixed maturity securities - maturities, calls and redemptions	2,496	2,655
Equity securities	82	72
Limited partnerships	91	153
Mortgage loans	20	6
Purchases:
Fixed maturity securities	(8,205)	(7,369)
Equity securities	(61)	(30)
Limited partnerships	(163)	(119)
Mortgage loans	(59)	(129)
Change in other investments	(19)	1
Change in short term investments	357	(505)
Purchase of Hardy		(197)
Purchases of property and equipment	(67)	(60)
Other, net	9	14
Net cash flows provided (used) by investing activities	(689)	(747)
Cash Flows from Financing Activities
Dividends paid to common stockholders	(162)	(122)
Repayment of debt	(13)	(70)
Stock options exercised	1	1
Other, net	(26)	(4)
Net cash flows provided (used) by financing activities	(200)	(195)
Effect of foreign exchange rate changes on cash	(3)	3
Net change in cash	29	54
Cash, beginning of year	156	75
Cash, end of period	$ 185	$ 129