Consolidated Statements of Comprehensive Income (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net income (loss)	$ 761,153	$ 164,599	$ 859,229	$ 677,194
Unrealized holding gains (losses) arising during the period, net of tax provision (benefit) of $45,072, $64,025, $90,706 and $62,428	115,356	139,638	204,620	197,035
Less: reclassification adjustment for gains (losses) included in net income (loss), net of tax provision (benefit) of $(4,063), $(1,118), $(5,634) and $(2,556)	(8,360)	(1,256)	(11,558)	1,157
Change in net unrealized gains on investments	123,716	140,894	216,178	195,878
Change in cumulative translation adjustment, net of tax provision (benefit) of $(1,146), $3,138, $(286) and $284	(2,141)	5,411	(552)	152
Change in cash flow hedge, net of tax provision (benefit) of $(56), $(56), $(169) and $(169)	(105)	(105)	(314)	(314)
Other comprehensive income (loss)	121,470	146,200	215,312	195,716
Comprehensive income (loss)	$ 882,623	$ 310,799	$ 1,074,541	$ 872,910