Consolidated Statements of Comprehensive Income (USD $) In Thousands	3 Months Ended
	Mar. 31, 2011	Mar. 31, 2010
Net income (loss)	$ 140,612	$ 333,460
Unrealized holding gains (losses) arising during the period, net of tax provision (benefit) of $(10,437) and $(5,382)	(25,545)	9,214
Less: reclassification adjustment for gains (losses) included in net income (loss), net of tax provision (benefit) of $172 and $2,768	1,029	6,645
Change in net unrealized gains on investments	(26,574)	2,569
Change in cumulative translation adjustment, net of tax provision (benefit) of $669 and $(2,108)	1,243	(3,884)
Change in cash flow hedge, net of tax provision (benefit) of $(56) and $(56)	(105)	(105)
Other comprehensive income (loss)	(25,436)	(1,420)
Comprehensive income (loss)	$ 115,176	$ 332,040