Segment Information - Schedule of Segment Information (Details) $ in Thousands		3 Months Ended			6 Months Ended
	Mar. 28, 2022 restaurant	Jun. 26, 2022 USD ($)	Mar. 27, 2022 USD ($)	Jun. 27, 2021 USD ($)	Jun. 26, 2022 USD ($)	Jun. 27, 2021 USD ($)	Dec. 26, 2021 USD ($)
Segment Reporting Information [Line Items]
Total revenues		$ 522,665		$ 515,008	$ 1,065,357	$ 1,026,754
Total operating income		38,904		44,637	53,339	91,499
Accumulated depreciation and amortization		(526,105)			(526,105)
Total property and equipment, net		225,382			225,382		$ 223,856
Refranchising loss					8,400
Non-cash reserves		0		0	11,160	0
Corporate Joint Venture | Disposal group, disposed of by sale, not discontinued operations
Segment Reporting Information [Line Items]
Number of restaurants divested | restaurant	90
Accounts Receivable
Segment Reporting Information [Line Items]
Non-cash reserves			$ 14,600
Domestic Company-owned restaurants
Segment Reporting Information [Line Items]
Total revenues		171,411		196,124	370,176	393,358
North America franchising
Segment Reporting Information [Line Items]
Total revenues		34,917		32,475	69,185	65,190
North America commissaries
Segment Reporting Information [Line Items]
Total revenues		219,383		186,641	429,062	371,519
International
Segment Reporting Information [Line Items]
Total revenues		31,958		37,614	66,575	72,221
All others
Segment Reporting Information [Line Items]
Total revenues		64,996		62,154	130,359	124,466
Operating segments
Segment Reporting Information [Line Items]
Total revenues		522,665		515,008	1,065,357	1,026,754
Operating segments | Domestic Company-owned restaurants
Segment Reporting Information [Line Items]
Total revenues		171,411		196,124	370,176	393,358
Total operating income		5,924		15,361	7,912	30,685
Property and equipment, gross		225,755			225,755
Operating segments | North America franchising
Segment Reporting Information [Line Items]
Total revenues		34,917		32,475	69,185	65,190
Total operating income		32,624		30,518	64,761	60,961
Operating segments | North America commissaries
Segment Reporting Information [Line Items]
Total revenues		219,383		186,641	429,062	371,519
Total operating income		10,957		9,778	20,292	19,491
Property and equipment, gross		151,648			151,648
Operating segments | International
Segment Reporting Information [Line Items]
Total revenues		39,282		46,277	81,989	88,881
Total operating income		7,306		8,683	11,761	17,047
Property and equipment, gross		15,157			15,157
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		57,672		53,491	114,945	107,806
Total operating income		2,187		4,894	5,906	11,012
Property and equipment, gross		118,496			118,496
Eliminations
Segment Reporting Information [Line Items]
Total revenues		(69,691)		(73,412)	(148,630)	(145,690)
Total operating income		(750)		20	(839)	82
Eliminations | North America franchising
Segment Reporting Information [Line Items]
Total revenues		(1,048)		(1,041)	(2,101)	(2,101)
Eliminations | North America commissaries
Segment Reporting Information [Line Items]
Total revenues		(52,754)		(53,428)	(111,261)	(105,498)
Eliminations | All others
Segment Reporting Information [Line Items]
Total revenues		(15,889)		(18,943)	(35,268)	(38,091)
Unallocated corporate expenses
Segment Reporting Information [Line Items]
Total operating income		(19,344)		(24,617)	(56,454)	(47,779)
Property and equipment, gross		$ 240,431			240,431
Legal settlement expense					5,000
Reorganization costs				$ 3,300		$ 7,200
Advisory Fees and Severance Costs					1,500
Unallocated corporate expenses | Notes Receivable
Segment Reporting Information [Line Items]
Non-cash reserves					$ 13,900