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Stock-Based Awards - Class A Common Stock Reserved for Issuance (Details) - shares
shares in Thousands
Dec. 27, 2020
Dec. 29, 2019
Class A Common Stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares, outstanding 2,027 3,019
Shares, available for issuance 15,190 7,475
Class A Common Stock | Incentive Plans    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares, available for issuance 15,190 7,475
Class A Common Stock | 2020 Incentive Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares, available for issuance 15,000  
Stock Options and Stock-Settled Restricted Stock Units | Class A Common Stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares, outstanding 1,001 1,648
Stock-Settled Performance Awards | Class A Common Stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares, outstanding 1,026 1,371
Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Percentage of target number of performance awards granted 0.00%  
Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Percentage of target number of performance awards granted 200.00%