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Operating (Gains), Losses and Other Charges, Net - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 25, 2024 USD ($) restaurant	Sep. 27, 2023 USD ($)	Sep. 25, 2024 USD ($) restaurant	Sep. 27, 2023 USD ($)	Dec. 27, 2023 USD ($) parcel restaurant
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of restaurants | restaurant	1,586		1,586
Assets held for sale	$ 0		$ 0		$ 1,455
Impairment charges	78	$ 1,711	792	$ 1,840
Property impairment			600
Severance and other restructuring charges	700		700		1,400
Reacquired franchise rights
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of franchisee rights			100
Franchise agreements
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of franchisee rights	100		100
Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property					$ 900
Number of restaurants | restaurant					3
Assets held for sale	$ 0		$ 0		$ 1,500
Goodwill					500
Other assets					$ 100
Number of real estate properties | parcel					1

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