Company-owned Store Transactions - Additional Information (Detail) - US Franchisee [Member] $ in Millions	3 Months Ended
	Mar. 26, 2023 USD ($)	Mar. 27, 2022 USD ($) Store
Business Acquisition [Line Items]
Number of stores purchased | Store		23
Receipts from sale of franchisees	$ 0.1
Reduction of goodwill related to sale of stores	$ 0.1
Payments for purchase of franchisees		$ 6.8
Value of intangibles purchased		4.0
Value of leasehold and other assets purchased		1.7
Value of goodwill purchased		$ 1.1