Taxes (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	$ 140,948	$ 133,910	$ 122,212
State and Local Income Taxes	1,167	1,459	1,030
Change in Deferred Tax Assets Valuation Allowance	1,178	0	0
Foreign Income Tax Rate Differential	(50,041)	(44,288)	(36,814)
Other Adjustments	3,363	673	(6,744)
Provision for taxes	$ 96,615	$ 91,754	$ 79,684
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		35.00%