System Optimization (Gains) Losses, Net Summary of Disposition Activity (Details) $ in Thousands	3 Months Ended
Mar. 29, 2026 USD ($) Restaurant number_of_restaurants	Mar. 30, 2025 USD ($) Restaurant number_of_restaurants
System Optimization (Gains) Losses, Net
Proceeds from sales of restaurants	$ 2,796	$ 55
System optimization gains (losses), net	$ 1,625	$ (90)
Sale of franchise-operated restaurants to franchisees
System Optimization (Gains) Losses, Net
Number of restaurants sold to franchisees \| Restaurant	41	0
Sale of Company-Operated Restaurants to Franchisees [Member]
System Optimization (Gains) Losses, Net
Number of restaurants sold to franchisees \| number_of_restaurants	3	2
Proceeds from sales of restaurants	$ 1,804	$ 55
Net Assets Sold	1,572	169
Other gain (loss) on disposition, net	(232)	(25)
Loss on sales of restaurants, net	0	(139)
Sale of Company-Operated Restaurants to Franchisees [Member] \| Net cash provided by operating activities
System Optimization (Gains) Losses, Net
Proceeds from sales of restaurants	1,804
Sale of other assets
System Optimization (Gains) Losses, Net
Proceeds from sales of restaurants	2,796
System optimization gains (losses), net	$ 1,625	$ 49

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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