Consolidated Condensed Statements Of Cash Flows (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Operating Activities:
Net income	$ 1,287	$ 1,317
Adjustments to reconcile net income to net cash provided by operating activities, net	977	640
Changes in operating assets and liabilities, net:
Reinsurance receivables	405	(545)
Other receivables	(181)	(38)
Deferred acquisition costs	(28)	12
Insurance reserves	(5)	(563)
Other liabilities	(349)	28
Trading securities	(231)	243
Other, net	149	(110)
Net cash flow operating activities - continuing operations	2,024	984
Net cash flow operating activities - discontinued operations		(89)
Net cash flow operating activities - total	2,024	895
Investing Activities:
Purchases of fixed maturities	(8,854)	(12,981)
Proceeds from sales of fixed maturities	5,912	9,263
Proceeds from maturities of fixed maturities	2,434	2,891
Purchases of equity securities	(51)	(92)
Proceeds from sales of equity securities	171	215
Purchases of property, plant and equipment	(502)	(670)
Deposits for construction of offshore drilling equipment	(478)
Sales of property, plant and equipment	28	789
Change in short term investments	1,295	629
Change in other investments	(314)	(552)
Other, net	6	7
Net cash flow investing activities - continuing operations	(353)	(501)
Net cash flow investing activities - discontinued operations		75
Net cash flow investing activities - total	(353)	(426)
Financing Activities:
Dividends paid	(76)	(79)
Dividends paid to noncontrolling interests	(297)	(397)
Acquisition of CNA Surety noncontrolling interests	(475)
Purchases of treasury shares	(700)	(351)
Issuance of common stock	4	5
Proceeds from sale of subsidiary stock	172	337
Principal payments on debt	(1,630)	(659)
Issuance of debt	1,351	645
Other, net	(11)	(28)
Net cash flow financing activities - continuing operations	(1,662)	(527)
Net cash flow financing activities - discontinued operations
Net cash flow financing activities - total	(1,662)	(527)
Effect of foreign exchange rate on cash	(1)
Net change in cash	8	(58)
Net cash transactions:
From continuing operations to discontinued operations		(14)
To discontinued operations from continuing operations		14
Cash, beginning of period	120	190
Cash, end of period	128	132
Cash, end of period:
Continuing operations	128	132
Discontinued operations
Total	$ 128	$ 132