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Long-Term Obligations - Second Amended and Restated Credit Agreement (Details) - Line of Credit - Revolving Credit Facility - Fifth Third Bank - USD ($)
3 Months Ended
Dec. 30, 2014
Mar. 31, 2020
Sep. 28, 2018
Sep. 27, 2018
Line of Credit Facility [Line Items]        
Weighted average interest rate (as percent)   3.70%    
Prime Rate | United States of America, Dollars        
Line of Credit Facility [Line Items]        
Variable rate description U.S. dollar prime rate      
London Interbank Offered Rate (LIBOR) | United States of America, Dollars        
Line of Credit Facility [Line Items]        
Variable rate description LIBOR      
Canadian prime rate | Canada, Dollars        
Line of Credit Facility [Line Items]        
Variable rate description Canadian dollar prime rate      
Canadian Dealer Offered Rate (CDOR) | Canada, Dollars        
Line of Credit Facility [Line Items]        
Variable rate description Canadian Dealer Offered Rate      
DKL Revolver        
Line of Credit Facility [Line Items]        
Maximum lender commitment     $ 850,000,000.0 $ 700,000,000.0
Line Of Credit Facility, Accordion Feature, Increase Limit       $ 100,000,000.0
Maximum amount under accordion feature     $ 1,000,000,000.0  
Second Amended and Restated Credit Agreement        
Line of Credit Facility [Line Items]        
Commitment fee (as percent)   0.40%    
Outstanding borrowings   $ 695,000,000.0    
Letters of credit outstanding   0    
Unused credit commitment   $ 155,000,000.0