Long-Term Debt Other Long-term Debt Disclosure (Details) - Line of Credit [Member] - Wendy's U.S. Advertising Fund [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2025	Mar. 30, 2025	Jun. 29, 2025
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 15,000		$ 15,000
Debt Instrument, Basis Spread on Variable Rate			2.25%
Proceeds from Lines of Credit	8,500	$ 15,000
Repayments of Lines of Credit		$ 8,500
Line of Credit, Outstanding, Amount	$ 15,000		$ 15,000