Restructuring - Summary of Restructuring Related Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2025	Sep. 29, 2024	Sep. 28, 2025	Sep. 29, 2024
Restructuring Cost and Reserve [Line Items]
Total international transformation costs	$ 231	$ 3,862	$ 4,862	$ 19,514
International Transformation Plan
Restructuring Cost and Reserve [Line Items]
Total international transformation costs	231	3,876	4,862	19,604
Stock-based compensation expense/(forfeitures on unvested awards)	0	(14)	(21)	(90)
Total international transformation costs, inclusive of stock-based award expense/forfeitures	231	3,862	4,841	19,514
International Transformation Plan | Professional services and other related costs
Restructuring Cost and Reserve [Line Items]
Total international transformation costs	416	2,029	2,630	4,730
International Transformation Plan | Loss on franchisee notes receivable
Restructuring Cost and Reserve [Line Items]
Total international transformation costs	(10)	171	2,151	1,735
International Transformation Plan | Long-lived asset impairment charges
Restructuring Cost and Reserve [Line Items]
Total international transformation costs	33	1,145	834	10,121
International Transformation Plan | Lease terminations and other lease related costs
Restructuring Cost and Reserve [Line Items]
Total international transformation costs	(215)	426	(775)	732
International Transformation Plan | Employee termination costs
Restructuring Cost and Reserve [Line Items]
Total international transformation costs	7	98	22	542
International Transformation Plan | Loss on refranchising Company-owned restaurants
Restructuring Cost and Reserve [Line Items]
Total international transformation costs	$ 0	$ 7	$ 0	$ 1,744