Unaudited Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenues
Gross premiums written	$ 1,095,326	$ 1,008,464	$ 3,735,091	$ 4,057,965
Net premiums written	1,079,557	987,612	3,606,444	3,884,511
Decrease (increase) in unearned premiums	214,762	325,802	(140,091)	(312,687)
Net premiums earned	1,294,319	1,313,414	3,466,353	3,571,824
Net investment income	163,647	164,402	473,608	511,978
Net realized and unrealized investment gains (losses)	26,139	293,164	(7,860)	484,683
Other income	1,434	3,363	4,843	5,391
Total revenues	1,485,539	1,774,343	3,936,944	4,573,876
Expenses
Losses and loss expenses and life policy benefits	881,626	748,879	3,303,366	2,465,847
Acquisition costs	262,489	261,668	699,589	725,919
Other operating expenses	103,822	118,221	321,813	406,506
Interest expense	12,216	12,297	36,730	32,232
Amortization of intangible assets	9,520	10,003	27,512	22,639
Net foreign exchange (gains) losses	(10,587)	27,074	(20,020)	12,426
Total expenses	1,259,086	1,178,142	4,368,990	3,665,569
Income (loss) before taxes and interest in (losses) earnings of equity investments	226,453	596,201	(432,046)	908,307
Income tax expense	41,803	72,576	65,632	117,892
Interest in (losses) earnings of equity investments	(4,527)	1,312	(4,970)	5,103
Net income (loss)	180,123	524,937	(502,648)	795,518
Preferred dividends	14,352	8,631	31,614	25,894
Net income (loss) available to common shareholders	165,771	516,306	(534,262)	769,624
Comprehensive income (loss)
Net income (loss)	180,123	524,937	(502,648)	795,518
Change in currency translation adjustment	(54,958)	107,572	(10,874)	(66,506)
Change in other accumulated comprehensive income (loss), net of tax	1,106	(1,260)	(1,049)	(6,514)
Comprehensive income (loss)	$ 126,271	$ 631,249	$ (514,571)	$ 722,498
Per share data
Basic net income (loss)	$ 2.45	$ 6.86	$ (7.88)	$ 9.86
Diluted net income (loss)	$ 2.43	$ 6.76	$ (7.88)	$ 9.68
Weighted average number of common shares outstanding	67,743,296	75,238,329	67,788,427	78,076,561
Weighted average number of common shares and common share equivalents outstanding	68,181,982	76,428,460	67,788,427	79,494,247
Dividends declared per common share	$ 0.60	$ 0.50	$ 1.75	$ 1.50