Restatement of Previously Issued Financial Statements (Details 3) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Net income (loss)	$ (42,536)	$ 179,135	$ 98,076	$ 512,595
Unrealized holding gains (losses) arising during the period	114,809	48,183	89,264	57,397
Less: reclassification adjustment for gains (losses)	(4,227)	(4,232)	(3,198)	2,413
Change in net unrealized gains on investments	119,036	52,415	92,462	54,984
Change in cumulative translation adjustment	346	(1,375)	1,589	(5,259)
Change in cash flow hedge	(104)	(104)	(209)	(209)
Other comprehensive income (loss)	119,278	50,936	93,842	49,516
Comprehensive income (loss)	76,742	230,071	191,918	562,111
As Previously Filed
Net income (loss)	(57,700)	203,500	67,700	525,500
Unrealized holding gains (losses) arising during the period	115,600	48,200	90,400	57,400
Less: reclassification adjustment for gains (losses)	(4,200)	(4,200)	(3,200)	2,400
Change in net unrealized gains on investments	119,800	52,400	93,600	55,000
Change in cumulative translation adjustment	400	(1,400)	1,600	(5,300)
Change in cash flow hedge	(100)	(100)	(200)	(200)
Other comprehensive income (loss)	120,100	50,900	95,000	49,500
Comprehensive income (loss)	62,400	254,400	162,700	575,000
FG VIE Eliminations
Net income (loss)	11,000	(24,200)	26,700	(17,100)
Unrealized holding gains (losses) arising during the period	(800)		(1,100)
Change in net unrealized gains on investments	(800)		(1,100)
Other comprehensive income (loss)	(800)		(1,100)
Comprehensive income (loss)	10,200	(24,200)	25,600	(17,100)
Other Adjustments
Net income (loss)	4,100	(200)	3,600	4,200
Comprehensive income (loss)	$ 4,100	$ (200)	$ 3,600	$ 4,200