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Debt - Schedule of Debt (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 27, 2021
Mar. 28, 2020
Dec. 26, 2020
Oct. 30, 2020
Aug. 14, 2017
Debt Instrument [Line Items]          
Long-term Debt         $ 150,000
Unsecured Debt $ 1,000,000 $ 1,020,000 $ 1,000,000    
Unamortized Debt Issuance Costs (15,200) (900) (15,700)    
Unsecured debt, net of debt issuance costs 984,800 1,019,100 984,300    
Unsecured Debt, Current 0 (30,000) 0    
Long-term debt 984,838 989,074 984,324    
Letters of Credit Outstanding, Amount 60,300 39,000 48,700    
2016 Senior Credit Facility [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Maximum Month-end Outstanding Amount 0 445,000 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 0 140,000 0    
June 2017 Term Loan          
Debt Instrument [Line Items]          
Notional Amount, Current 0 85,000 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 $ 200,000 $ 0 $ 200,000