Income Taxes (Schedule of Income Tax Reconciliation) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Tax expense at U.S. statutory rates	$ 164,790	$ 207,171	$ 297,151
State taxes, net of federal benefit	203	203	203
Foreign tax rate differential	(148,438)	(165,572)	(225,234)
Executive compensation deduction limitation	2,217	2,346	3,237
Research and development tax credits	(28,538)	(20,487)	(16,649)
Interest on unrecognized gross tax benefits	5,149	(1,968)	7,520
Deferred tax asset valuation allowance	6,068	7,532	8,198
Foreign dividends	27,707	0	0
Other, net	1,605	5,885	3,855
Income tax expense	$ 30,763	$ 35,110	$ 78,281