CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Investments:
Fixed maturities available for sale, at fair value (amortized cost: $9,304,357 and $8,771,988)	$ 9,529,834	$ 8,957,859
Short-term investments available for sale, at fair value (amortized cost: $807,872 and $913,488)	799,662	915,841
Investment of funds received under securities lending, at fair value (amortized cost: $44,695 and $69,682)	44,553	69,660
Equity securities available for sale, at fair value (cost: $300,335 and $292,958)	273,213	310,194
Other investments available for sale, at fair value (cost: $226,089 and $252,590)	229,974	275,538
Investments accounted for using the fair value option	319,381	219,173
TALF investments, at fair value (amortized cost: $376,889 and $389,200)	392,455	402,449
Investment funds accounted for using the equity method	383,543	508,334
Total investments	11,972,615	11,659,048
Cash	369,895	362,740
Accrued investment income	71,264	74,837
Investment in joint venture (cost: $100,000)	107,642	105,698
Fixed maturities and short-term investments pledged under securities lending, at fair value	72,399	75,575
Securities purchased under agreements to resell using funds received under securities lending agreements	20,032
Premiums receivable	606,963	503,434
Reinsurance recoverable on unpaid and paid losses and loss adjustment expenses	1,840,191	1,763,985
Prepaid reinsurance premiums	267,846	263,448
Deferred acquisition costs, net	306,810	277,861
Receivable for securities sold	1,067,188	56,145
Other assets	727,183	669,164
Total Assets	17,430,028	15,811,935
Liabilities
Reserve for losses and loss adjustment expenses	8,523,522	8,098,454
Unearned premiums	1,578,419	1,370,075
Reinsurance balances payable	123,815	132,452
Senior notes	300,000	300,000
Revolving credit agreement borrowings	100,000	100,000
TALF borrowings, at fair value (par: $314,371 and $326,219)	314,137	325,770
Securities lending payable	74,696	78,021
Payable for securities purchased	1,161,591	200,192
Other liabilities	779,477	693,968
Total Liabilities	12,955,657	11,298,932
Shareholders Equity
Non-cumulative preferred shares - Series A and B	325,000	325,000
Common shares ($0.0033 par, shares issued: 163,267,317 and 160,073,616)	544	534
Additional paid-in capital	150,882	110,325
Retained earnings	4,696,256	4,422,553
Accumulated other comprehensive income, net of deferred income tax	146,576	204,503
Common shares held in treasury, at cost (shares: 30,261,852 and 20,441,391)	(844,887)	(549,912)
Total Shareholders Equity	4,474,371	4,513,003
Total Liabilities and Shareholders Equity	$ 17,430,028	$ 15,811,935