UNAUDITED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands	Total	Ordinary Shares	Additional Paid in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Deficit)	Non-controlling Interest in Equity of Consolidated Subsidiaries
Balance, beginning of year at Dec. 31, 2012		$ 2,987	$ 8,584,752	$ 1,520,020	$ 402,318	$ 1,346,325
Issuance of ordinary shares		8	7
Buybacks of ordinary shares		(80)	(220,572)		(3,767)
Exercise of stock options		3
Exercise of stock options			4,313
Share-based compensation expense			3,026
Change in net unrealized gains (losses) on investments, net of tax	(112,222)			(112,222)
Change in net unrealized gains (losses) on affiliate and other investments, net of tax	(4,434)			(4,434)
Change in OTTI losses recognized in other comprehensive income, net of tax	5,182			5,182
Change in underfunded pension liability, net of tax	385			385
Change in value of cash flow hedge	110			110
Foreign currency translation adjustments, net of tax	(3,919)			(3,919)
Net income (loss) attributable to ordinary shareholders	350,790				350,790
Dividends on ordinary shares					(41,553)
Non-controlling interests - contribution						0
Non-controlling interests - distribution						(37)
Non-controlling interests						82
Non-controlling interest share in change in accumulated other comprehensive income (loss)						(29)
Non-controlling interests - deconsolidation						(1,841)
Balance, end of year at Mar. 31, 2013	11,831,854	2,918	8,371,526	1,405,122	707,788	1,344,500
Balance, beginning of year at Dec. 31, 2013	11,349,298	2,783	7,994,100	736,657	1,264,093	1,351,665
Issuance of ordinary shares		10	7
Buybacks of ordinary shares		(58)	(168,144)		(8,293)
Exercise of stock options		1
Exercise of stock options			1,309
Share-based compensation expense			1,396
Change in net unrealized gains (losses) on investments, net of tax	207,387			207,387
Change in net unrealized gains (losses) on affiliate and other investments, net of tax	3,123			3,123
Change in OTTI losses recognized in other comprehensive income, net of tax	3,296			3,296
Change in underfunded pension liability, net of tax	(32)			(32)
Change in value of cash flow hedge	110			110
Foreign currency translation adjustments, net of tax	(3,880)			(3,880)
Net income (loss) attributable to ordinary shareholders	255,717				255,717
Dividends on ordinary shares					(44,620)
Non-controlling interests - contribution						7,001
Non-controlling interests - distribution						0
Non-controlling interests						346
Non-controlling interest share in change in accumulated other comprehensive income (loss)						0
Non-controlling interests - deconsolidation						0
Balance, end of year at Mar. 31, 2014	$ 11,603,974	$ 2,736	$ 7,828,668	$ 946,661	$ 1,466,897	$ 1,359,012