Consolidated Statement of Cash Flows (Unaudited) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities
Net income	$ 808	$ 2,322
Adjustments to reconcile net income to net cash provided by operating activities:
Net realized investment gains	(41)	(220)
Depreciation and amortization	599	608
Deferred federal income tax expense	159	149
Amortization of deferred acquisition costs	2,900	2,845
Equity in income from other investments	(279)	(161)
Change in premiums receivable	(439)	(228)
Change in reinsurance recoverables	244	754
Change in deferred acquisition costs	(2,988)	(2,928)
Change in claims and claim adjustment expense reserves	742	(1,112)
Change in unearned premium reserves	612	418
Other operating activities	(499)	(55)
Net cash provided by operating activities	1,818	2,392
Cash flows from investing activities
Proceeds from maturities of fixed maturities	5,241	3,881
Proceeds from sales of investments, fixed maturities	842	3,281
Proceeds from sales of investments, equity securities	51	157
Proceeds from sales of investments, real estate	1	10
Proceeds from sales of investments, other investments	482	426
Purchases of investments, fixed maturities	(6,224)	(5,167)
Purchases of investments, equity securities	(118)	(29)
Purchases of investments, real estate	(41)	(15)
Purchases of investments, other investments	(758)	(373)
Net sales (purchases) of short-term securities	813	(66)
Securities transactions in course of settlement	196	(240)
Other investing activities	(248)	(220)
Net cash provided by investing activities	237	1,645
Cash flows from financing activities
Payment of debt	(8)	(275)
Dividends paid to shareholders	(500)	(512)
Issuance of common stock - employee share options	270	267
Treasury stock acquired - share repurchase authorization	(1,755)	(3,441)
Treasury stock acquired - net employee share-based compensation	(46)	(40)
Excess tax benefits from share-based payment arrangements	17	6
Net cash used in financing activities	(2,022)	(3,995)
Effect of exchange rate changes on cash	(2)	1
Net increase in cash	31	43
Cash at beginning of year	200	255
Cash at end of period	231	298
Supplemental disclosure of cash flow information
Income taxes paid	277	511
Interest paid	$ 226	$ 263