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Debt - Schedule of Debt (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 26, 2021
Mar. 27, 2021
Jun. 27, 2020
Dec. 26, 2020
Oct. 30, 2020
Aug. 14, 2017
Debt Instrument [Line Items]            
Long-term Debt           $ 150,000
Unsecured Debt $ 1,000,000   $ 917,500 $ 1,000,000    
Unamortized Debt Issuance Costs (14,600)   (1,400) (15,700)    
Unsecured debt, net of debt issuance costs 985,400   916,100 984,300    
Unsecured Debt, Current 0   (380,000) 0    
Long-term debt 985,353   536,051 984,324    
Letters of Credit Outstanding, Amount 68,100   52,400 48,700    
2016 Senior Credit Facility [Member]            
Debt Instrument [Line Items]            
Line of Credit Facility, Maximum Month-end Outstanding Amount 0 $ 0 0      
Bonds            
Debt Instrument [Line Items]            
Long-term Debt 650,000   0 650,000 $ 650,000  
Notes Payable to Banks            
Debt Instrument [Line Items]            
Long-term Debt 150,000   150,000 150,000    
February 2016 Term Loan            
Debt Instrument [Line Items]            
Notional Amount, Current 0   135,000 0    
June 2017 Term Loan            
Debt Instrument [Line Items]            
Notional Amount, Current 0   82,500 0    
Term Loan            
Debt Instrument [Line Items]            
Notional Amount, Current 0   200,000 0    
April 2020 Term Loan            
Debt Instrument [Line Items]            
Notional Amount, Current 0   350,000 0    
November 2020 Term Loan            
Debt Instrument [Line Items]            
Notional Amount, Current $ 200,000   $ 0 $ 200,000