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Leases - Narrative (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 29, 2024
USD ($)
restaurant
lease
Sep. 24, 2023
USD ($)
Sep. 29, 2024
USD ($)
restaurant
lease
Sep. 24, 2023
USD ($)
Lessee, Lease, Description [Line Items]        
Sublease income $ 2.7 $ 2.3 $ 7.1 $ 8.0
Number of domestic leases for which the Company is contingently liable | lease 75   75  
Estimated maximum amount of undiscounted payments in the event of nonpayment by primary lessees $ 6.9   $ 6.9  
Minimum        
Lessee, Lease, Description [Line Items]        
Initial term of franchise subleases 5 years   5 years  
Maximum        
Lessee, Lease, Description [Line Items]        
Initial term of franchise subleases 10 years   10 years  
United Kingdom franchise-owned restaurants        
Lessee, Lease, Description [Line Items]        
Number of units leased and subleased | restaurant 350   350  
Initial lease terms on franchised sites 15 years   15 years