Leases - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) lease restaurant	Mar. 26, 2023 USD ($)
Lessee, Lease, Description [Line Items]
Sublease income	$ 2.3	$ 2.9
Number of domestic leases for which the Company is contingently liable | lease	48
Estimated maximum amount of undiscounted payments in the event of nonpayment by primary lessees	$ 6.8
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	323
Initial lease terms on franchised sites	15 years