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Long-Term Debt (Senior Credit Facility) (Details)
12 Months Ended
Mar. 26, 2015
USD ($)
Dec. 31, 2017
USD ($)
Sep. 25, 2013
USD ($)
2013 Senior Secured Credit Facility      
Line of Credit Facility [Line Items]      
Maximum borrowing capacity under credit facility     $ 1,000,000,000
2015 Senior Secured Credit Facility      
Line of Credit Facility [Line Items]      
Maximum borrowing capacity under credit facility $ 1,800,000,000    
Commitment fee percentage   0.125%  
Unamortized financing costs $ 6,873,000    
Utilized borrowings under credit facility   $ 1,259,017,000  
Available amount under credit facility   540,983,000  
2015 Senior Secured Credit Facility | Minimum      
Line of Credit Facility [Line Items]      
Commitment fee percentage 0.10%    
Consolidated interest coverage ratio 3.0    
2015 Senior Secured Credit Facility | Maximum      
Line of Credit Facility [Line Items]      
Commitment fee percentage 0.225%    
Consolidated net leverage ratio 3.75    
2015 Senior Secured Credit Facility | Borrowings      
Line of Credit Facility [Line Items]      
Utilized borrowings under credit facility   62,104,000  
2015 Senior Secured Credit Facility | Standby letters of credit related to various insurance contracts and foreign vendor commitments      
Line of Credit Facility [Line Items]      
Utilized borrowings under credit facility   $ 56,267,000  
2015 Senior Secured Credit Facility | London Interbank Offered Rate (LIBOR)      
Line of Credit Facility [Line Items]      
Basis spread on debt instrument   1.125%  
2015 Senior Secured Credit Facility | London Interbank Offered Rate (LIBOR) | Minimum      
Line of Credit Facility [Line Items]      
Basis spread on debt instrument 1.00%    
2015 Senior Secured Credit Facility | London Interbank Offered Rate (LIBOR) | Maximum      
Line of Credit Facility [Line Items]      
Basis spread on debt instrument 1.75%    
2015 Senior Secured Credit Facility | Federal Funds Effective Swap Rate      
Line of Credit Facility [Line Items]      
Basis spread on debt instrument 0.50%    
2015 Senior Secured Credit Facility | Monthly LIBOR      
Line of Credit Facility [Line Items]      
Basis spread on debt instrument 1.00% 0.125%  
2015 Senior Secured Credit Facility | Monthly LIBOR | Minimum      
Line of Credit Facility [Line Items]      
Basis spread on debt instrument 0.00%    
2015 Senior Secured Credit Facility | Monthly LIBOR | Maximum      
Line of Credit Facility [Line Items]      
Basis spread on debt instrument 0.75%    
2015 Senior Secured Credit Facility Amendment      
Line of Credit Facility [Line Items]      
Unamortized financing costs $ 567,000    
Commercial Paper      
Line of Credit Facility [Line Items]      
Utilized borrowings under credit facility   $ 1,140,646,000