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Summary of Significant Accounting Policies (Details) - USD ($)
12 Months Ended
Dec. 27, 2020
Dec. 29, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Operating lease, impairment loss $ 0  
Self insurance reserve 23,000,000 $ 25,000,000
Assets Leased to Others    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Other asset impairment charges $ 0  
Minimum | Building and Building Improvements    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Property, plant and equipment, useful life (in years) 10 years  
Minimum | Equipment    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Property, plant and equipment, useful life (in years) 3 years  
Minimum | Computer Software, Intangible Asset    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Property, plant and equipment, useful life (in years) 3 years  
Maximum | Building and Building Improvements    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Property, plant and equipment, useful life (in years) 40 years  
Maximum | Equipment    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Property, plant and equipment, useful life (in years) 30 years  
Maximum | Computer Software, Intangible Asset    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Property, plant and equipment, useful life (in years) 5 years