Consolidated Statement of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013
Cash flows from operating activities
Net income	$ 2,654		$ 2,685
Adjustments to reconcile net income to net cash provided by operating activities:
Net realized investment gains	(57)	[1]	(155)	[1]
Depreciation and amortization	653		642
Deferred federal income tax expense	93		132
Amortization of deferred acquisition costs	2,899		2,851
Equity in income from other investments	(412)		(247)
Change in premiums receivable	(334)		(242)
Change in reinsurance recoverables	403		1,102
Change in deferred acquisition costs	(2,993)		(2,862)
Change in claims and claim adjustment expense reserves	(298)		(1,684)
Change in unearned premium reserves	379		483
Other operating activities	181		184
Net cash provided by operating activities	3,168		2,889
Cash flows from investing activities
Proceeds from maturities of fixed maturities	7,975		5,917
Proceeds from sales of investments, fixed maturities	927		1,160
Proceeds from sales of investments, equity securities	128		57
Proceeds from sales of investments, real estate investments	5
Proceeds from sales of investments, other investments	612		545
Purchases of investments, fixed maturities	(8,237)		(6,492)
Purchases of investments, equity securities	(47)		(50)
Purchases of investments, real estate investments	(41)		(65)
Purchases of investments, other investments	(406)		(312)
Net purchases of short-term securities	(1,163)		(1,893)
Securities transactions in course of settlement	119		280
Acquisition, net of cash acquired	(12)
Other investing activities	(262)		(254)
Net cash used in investing activities	(402)		(1,107)
Cash flows from financing activities
Payment of debt			(500)
Issuance of debt			494
Dividends paid to shareholders	(549)		(549)
Issuance of common stock - employee share options	154		158
Treasury stock acquired - share repurchase authorization	(2,275)		(1,400)
Treasury stock acquired - net employee share-based compensation	(56)		(60)
Excess tax benefits from share-based payment arrangements	38		43
Net cash used in financing activities	(2,688)		(1,814)
Effect of exchange rate changes on cash	(5)		(3)
Net increase (decrease) in cash	73		(35)
Cash at beginning of year	294		330
Cash at end of period	367		295
Supplemental disclosure of cash flow information
Income taxes paid	785		724
Interest paid	$ 217		$ 206

[1] Total other-than-temporary impairment (OTTI) gains (losses) were $(8) million and $0 million for the three months ended September 30, 2014 and 2013, respectively, and $(16) million and $(1) million for the nine months ended September 30, 2014 and 2013, respectively. Of total OTTI, credit losses of $(10) million and $(3) million for the three months ended September 30, 2014 and 2013, respectively, and $(20) million and $(10) million for the nine months ended September 30, 2014 and 2013, respectively, were recognized in net realized investment gains (losses). In addition, unrealized gains from other changes in total OTTI of $2 million and $3 million for the three months ended September 30, 2014 and 2013, respectively, and $4 million and $9 million for the nine months ended September 30, 2014 and 2013, respectively, were recognized in other comprehensive income (loss) as part of changes in net unrealized gains on investment securities having credit losses recognized in the consolidated statement of income.