CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $) In Thousands, except Share data	Jun. 30, 2011		Dec. 31, 2010
Amortized cost of Fixed maturities (in Dollars)	$ 25,105,488	[1]	$ 25,714,886	[1]
Cost of Equity securities (in Dollars)	282,128		56,737
Amortized cost of Short-term investments (in Dollars)	2,855,542		2,058,447
Fair value of held to maturity securities (in Dollars)	$ 2,819,505		$ 2,742,626
Redeemable Series C preference ordinary shares, shares authorized	20,000,000		20,000,000
Redeemable Series C preference ordinary shares, par or stated value per share (in Dollars per share)	$ 0.01		$ 0.01
Redeemable Series C preference ordinary shares, shares issued	2,846,000		2,876,000
Redeemable Series C preference ordinary shares, shares outstanding	2,846,000		2,876,000
Class A ordinary shares, shares authorized	999,990,000		999,990,000
Class A ordinary shares, par value (in Dollars per share)	$ 0.01		$ 0.01
Class A ordinary shares, shares issued	305,161,844		316,396,289
Class A ordinary shares, shares outstanding	305,161,844		316,396,289

[1] Included in the table above are Tier One and Upper Tier Two securities, representing committed term debt and hybrid instruments senior to the common and preferred equities of the financial institutions, at their fair value of $641.9 million and $757.8 million at June 30, 2011 and December 31, 2010, respectively. These securities are reflected in the table based on their call date and have net unrealized losses of $104.2 million and $143.7 million at June 30, 2011 and December 31, 2010, respectively.