Summary of Significant Accounting Policies Concentration of Risk (Details)	12 Months Ended
	Dec. 28, 2025 distributors number_of_restaurants states countries customers	Dec. 29, 2024 customers	Dec. 31, 2023 customers
Concentration Risk
Number of Customers Accounting for More Than 10% of Revenues | customers	0	0	0
Number of Restaurants	7,397
U.S.
Concentration Risk
Number of Main In-line Distributors | distributors	1
Number of Additional In-line Distributors | distributors	4
Number of States Where Restaurants are Located | states	50
International
Concentration Risk
Number of Countries Entity Operates (Including Canada) | countries	38
Entity Operated Units
Concentration Risk
Number of Restaurants	434
Entity Operated Units | Canada
Concentration Risk
Number of Restaurants	0
U.S Main In-Line Distributor Risk | U.S. | Restaurants in U.S. System
Concentration Risk
Concentration Risk, Percentage	63.00%
U.S. Additional In-Line Distributor Risk | U.S. | Restaurants in U.S. System
Concentration Risk
Concentration Risk, Percentage	35.00%
Geographic Concentration Risk, Canada | Canada | Franchised Units
Concentration Risk
Concentration Risk, Percentage	10.00%