Leases - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 30, 2025 USD ($) restaurant lease	Mar. 31, 2024 USD ($)
Lessee, Lease, Description [Line Items]
Sublease income	$ 2.6	$ 2.3
Number of domestic leases for which the Company is contingently liable | lease	75
Estimated maximum amount of undiscounted payments in the event of nonpayment by primary lessees	$ 9.8
Minimum
Lessee, Lease, Description [Line Items]
Initial term of franchise subleases	5 years
Maximum
Lessee, Lease, Description [Line Items]
Initial term of franchise subleases	10 years
United Kingdom franchise-owned restaurants
Lessee, Lease, Description [Line Items]
Number of units leased and subleased | restaurant	350
Initial lease terms on franchised sites	15 years