Income Taxes (Reconciliation Of Income Tax At Effective Income Tax Rate) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Expense (Benefit) [Abstract]
Income tax expense at federal statutory rate	$ (144,443)	$ (67,755)	$ (33,373)
State taxes, net of federal benefit	(10,003)	(2,280)	(8,620)
Differences between statutory rate and foreign effective tax rate	51,780	43,591	19,122
Non-deductible stock-based compensation	(1,509)	(1,777)	(2,826)
Change in valuation allowance	5,760	(350)	350
Research and experimentation credit	0	1,670	670
Tax expense related to foreign currency gain on distribution of previously taxed income	0	(6,207)	0
Change in estimated tax expense related to a divested business	0	0	3,365
Accrual for uncertain tax positions	(306)	(23,265)	(4,966)
Other	(1,489)	1,342	956
Income tax (expense) benefit	$ (100,210)	$ (55,031)	$ (25,322)