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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Long-Term Debt Other Long-term Debt Disclosure (Details) $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 29, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jan. 01, 2023 USD ($)	Dec. 29, 2024 CAD ($)	Jul. 03, 2022 USD ($)	Dec. 29, 2019 USD ($)
Debt Instrument
Gain on early extinguishment of debt, net	$ 0	$ 2,283	$ 0
Letters of Credit Outstanding, Amount	28,659
Restricted cash	34,481	$ 35,848	35,203
Series 2022-1 Class A-2-I Notes
Debt Instrument
Debt Instrument, Face Amount	$ 100,000
Debt Instrument, Interest Rate, Effective Percentage	4.70%			4.70%
Debt Instrument, Interest Rate, Stated Percentage	4.236%	4.236%		4.236%
Series 2022-1 Class A-2-II Notes
Debt Instrument
Debt Instrument, Face Amount	$ 400,000
Debt Instrument, Interest Rate, Effective Percentage	4.70%			4.70%
Debt Instrument, Interest Rate, Stated Percentage	4.535%	4.535%		4.535%
Series 2021-1 Class A-2-I Notes
Debt Instrument
Debt Instrument, Face Amount	$ 450,000
Debt Instrument, Interest Rate, Effective Percentage	2.60%			2.60%
Debt Instrument, Interest Rate, Stated Percentage	2.37%	2.37%		2.37%
Series 2021-1 Class A-2-II Notes
Debt Instrument
Debt Instrument, Face Amount	$ 650,000
Debt Instrument, Interest Rate, Effective Percentage	2.90%			2.90%
Debt Instrument, Interest Rate, Stated Percentage	2.775%	2.775%		2.775%
Series 2019-1 Class A-2-I Notes
Debt Instrument
Debt Instrument, Face Amount	$ 400,000
Debt Instrument, Interest Rate, Effective Percentage	4.00%			4.00%
Debt Instrument, Interest Rate, Stated Percentage	3.783%	3.783%		3.783%
Series 2019-1 Class A-2-II Notes
Debt Instrument
Debt Instrument, Face Amount	$ 450,000
Debt Instrument, Interest Rate, Effective Percentage	4.30%			4.30%
Debt Instrument, Interest Rate, Stated Percentage	4.08%	4.08%		4.08%
Series 2018-1 Class A-2-II Notes
Debt Instrument
Debt Instrument, Face Amount	$ 475,000
Debt Instrument, Interest Rate, Effective Percentage	4.10%			4.10%
Debt Instrument, Interest Rate, Stated Percentage	3.884%	3.884%		3.884%
Series 2021-1 Class A-1 Notes \| Line of Credit
Debt Instrument
Line of Credit Facility, Maximum Borrowing Capacity	$ 300,000
Line of Credit, Outstanding, Amount	$ 0
Series 2021-1 Class A-1 Notes \| Line of Credit \| Minimum
Debt Instrument
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.40%
Series 2021-1 Class A-1 Notes \| Line of Credit \| Maximum
Debt Instrument
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.75%
Series 2021-1 Class A-1 Notes \| Letter of Credit
Debt Instrument
Letters of Credit Outstanding, Amount	$ 28,457
Series 2022-1 Senior Notes
Debt Instrument
Debt Instrument, Face Amount					$ 500,000
Debt Issuance Costs, Gross			10,232
Class A-2 Senior Secured Notes
Debt Instrument
Debt Instrument, Repurchased Face Amount		$ 29,171
Debt Instrument, Repurchase Amount		24,935
Gain on early extinguishment of debt, net		3,914
7% debentures
Debt Instrument
Debt Instrument, Face Amount	$ 100,000
Debt Instrument, Repurchased Face Amount		40,430				$ 10,000
Debt Instrument, Repurchase Amount		40,517				$ 10,550
Gain on early extinguishment of debt, net		$ (1,631)
Debt Instrument, Interest Rate, Effective Percentage	8.60%			8.60%
Debt Instrument, Interest Rate, Stated Percentage	7.00%	7.00%		7.00%		7.00%
7% debentures \| Premium
Debt Instrument
Debt Instrument, Repurchase Amount						$ 500
7% debentures \| Transaction Fees
Debt Instrument
Debt Instrument, Repurchase Amount						$ 50
Restricted Cash Held for Principal Interest and Fees
Debt Instrument
Restricted cash	$ 34,089	$ 35,483
Canadian Subsidiary \| Line of Credit
Debt Instrument
Line of Credit Facility, Maximum Borrowing Capacity				$ 6,000
Line of Credit, Outstanding, Amount				$ 0
Wendy's U.S. Advertising Fund \| Line of Credit
Debt Instrument
Line of Credit Facility, Maximum Borrowing Capacity	15,000
Line of Credit, Outstanding, Amount	$ 0
Debt Instrument, Basis Spread on Variable Rate	2.25%
Corporate Debt Securities
Debt Instrument
Interest Expense, Operating and Nonoperating	$ 110,038	$ 112,659	$ 110,751