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General (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2017
USD ($)
Oct. 01, 2016
USD ($)
Jun. 09, 2015
EUR (€)
Debt Instrument [Line Items]      
Net cash provided by (used in) operating activities $ 874,222 $ 1,000,342  
Net cash provided by (used in) financing activities $ (23,337) (516,882)  
2.00% Senior Notes due January 14, 2022      
Debt Instrument [Line Items]      
Aggregate principal amount of debts | €     € 500,000,000
Interest rate percentage 2.00%   2.00%
Change in debt value $ 64,684    
Change in debt value, net of taxes $ 40,427    
Accounting Standards Update 2016-09, Statutory tax withholding component      
Debt Instrument [Line Items]      
Net cash provided by (used in) operating activities   11,879  
Net cash provided by (used in) financing activities   (11,879)  
Accounting Standards Update 2016-09, Excess tax benefit component      
Debt Instrument [Line Items]      
Net cash provided by (used in) operating activities   3,782  
Net cash provided by (used in) financing activities   $ (3,782)