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Segment Information - Schedule of Segment Information (Details) $ in Thousands		3 Months Ended		9 Months Ended
	Mar. 28, 2022 restaurant	Sep. 25, 2022 USD ($)	Sep. 26, 2021 USD ($)	Sep. 25, 2022 USD ($)	Sep. 26, 2021 USD ($)	Dec. 26, 2021 USD ($)
Segment Reporting Information [Line Items]
Total revenues		$ 510,512	$ 512,782	$ 1,575,869	$ 1,539,536
Total operating income		19,461	38,577	72,800	130,076
Accumulated depreciation and amortization		(535,724)		(535,724)
Total property and equipment, net		230,894		230,894		$ 223,856
Refranchising loss				8,400
Non-cash reserves		905	0	12,065	0
Corporate Joint Venture \| Disposal group, disposed of by sale, not discontinued operations
Segment Reporting Information [Line Items]
Number of restaurants divested \| restaurant	90
Domestic Company-owned restaurants
Segment Reporting Information [Line Items]
Total revenues		166,050	191,584	536,226	584,942
North America franchising
Segment Reporting Information [Line Items]
Total revenues		33,712	31,933	102,897	97,123
North America commissaries
Segment Reporting Information [Line Items]
Total revenues		216,115	189,224	645,177	560,743
International
Segment Reporting Information [Line Items]
Total revenues		30,735	38,408	97,310	110,629
All others
Segment Reporting Information [Line Items]
Total revenues		63,900	61,633	194,259	186,099
Operating segments
Segment Reporting Information [Line Items]
Total revenues		510,512	512,782	1,575,869	1,539,536
Operating segments \| Domestic Company-owned restaurants
Segment Reporting Information [Line Items]
Total revenues		166,050	191,584	536,226	584,942
Total operating income		3,667	9,480	11,579	40,165
Property and equipment, gross		229,480		229,480
Operating segments \| North America franchising
Segment Reporting Information [Line Items]
Total revenues		33,712	31,933	102,897	97,123
Total operating income		31,464	29,830	96,225	90,791
Operating segments \| North America commissaries
Segment Reporting Information [Line Items]
Total revenues		216,115	189,224	645,177	560,743
Total operating income		8,425	9,598	28,717	29,089
Property and equipment, gross		153,604		153,604
Operating segments \| International
Segment Reporting Information [Line Items]
Total revenues		37,707	46,880	119,696	135,761
Total operating income		1,136	9,618	12,897	26,665
Property and equipment, gross		14,601		14,601
Operating segments \| International \| United Kingdom
Segment Reporting Information [Line Items]
Accounts Receivable And Notes Receivable, Credit Loss Expense (Reversal) And Operating Lease, Impairment Loss		4,100
Operating segments \| International \| Accounts Receivable
Segment Reporting Information [Line Items]
Non-cash reserves				3,500
Operating segments \| All others
Segment Reporting Information [Line Items]
Total revenues		56,928	53,161	171,873	160,967
Total operating income		2,037	3,848	7,943	14,860
Property and equipment, gross		122,927		122,927
Eliminations
Segment Reporting Information [Line Items]
Total revenues		(67,888)	(73,013)	(216,518)	(218,703)
Total operating income		416	(639)	(423)	(557)
Eliminations \| North America franchising
Segment Reporting Information [Line Items]
Total revenues		(996)	(1,037)	(3,097)	(3,138)
Eliminations \| North America commissaries
Segment Reporting Information [Line Items]
Total revenues		(51,330)	(53,454)	(162,591)	(158,952)
Eliminations \| All others
Segment Reporting Information [Line Items]
Total revenues		(15,562)	(18,522)	(50,830)	(56,613)
Unallocated corporate expenses
Segment Reporting Information [Line Items]
Total operating income		(27,684)	(23,158)	(84,138)	(70,937)
Property and equipment, gross		246,006		246,006
Legal settlement expense		$ 10,000		15,000
Reorganization costs			$ 2,200		$ 9,400
Advisory Fees and Severance Costs				1,500
Unallocated corporate expenses \| Notes Receivable
Segment Reporting Information [Line Items]
Non-cash reserves				$ 13,900