Segment Information - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2021	Sep. 27, 2020	Sep. 26, 2021	Sep. 27, 2020
Revenue disaggregation
Total revenues	$ 512,782	$ 472,941	$ 1,539,536	$ 1,343,423
Domestic Company-owned restaurants
Revenue disaggregation
Total revenues	191,584	178,371	584,942	526,317
North America franchising
Revenue disaggregation
Total revenues	31,933	25,281	97,123	68,895
North America commissaries
Revenue disaggregation
Total revenues	189,224	181,338	560,743	504,379
International.
Revenue disaggregation
Total revenues	38,408	33,440	110,629	87,592
International. | International other revenue
Revenue disaggregation
Total revenues	(8,472)	(6,888)	(25,132)	(19,254)
All others
Revenue disaggregation
Total revenues	61,633	54,511	186,099	156,240
All others | International other revenue
Revenue disaggregation
Total revenues	8,472	6,888	25,132	19,254
Operating segments
Revenue disaggregation
Total revenues	512,782	472,941	1,539,536	1,343,423
Operating segments | Company-owned Restaurants
Revenue disaggregation
Total revenues	191,584	178,371	584,942	526,317
Operating segments | Franchise royalties and fees
Revenue disaggregation
Total revenues	47,001	36,808	139,657	99,148
Operating segments | Commissary Sales
Revenue disaggregation
Total revenues	267,055	254,381	790,928	706,178
Operating segments | Other Sales
Revenue disaggregation
Total revenues	80,155	81,679	242,712	222,749
Operating segments | Domestic Company-owned restaurants
Revenue disaggregation
Total revenues	191,584	178,371	584,942	526,317
Operating segments | Domestic Company-owned restaurants | Company-owned Restaurants
Revenue disaggregation
Total revenues	191,584	178,371	584,942	526,317
Operating segments | North America franchising
Revenue disaggregation
Total revenues	31,933	25,281	97,123	68,895
Operating segments | North America franchising | Franchise royalties and fees
Revenue disaggregation
Total revenues	32,970	26,105	100,261	71,186
Operating segments | North America commissaries
Revenue disaggregation
Total revenues	189,224	181,338	560,743	504,379
Operating segments | North America commissaries | Commissary Sales
Revenue disaggregation
Total revenues	242,678	231,644	719,695	646,548
Operating segments | International.
Revenue disaggregation
Total revenues	46,880	40,328	135,761	106,846
Other revenue from marketing fund contributions and sublease rental income	8,500	6,900	25,100	19,300
Operating segments | International. | Franchise royalties and fees
Revenue disaggregation
Total revenues	14,031	10,703	39,396	27,962
Operating segments | International. | Commissary Sales
Revenue disaggregation
Total revenues	24,377	22,737	71,233	59,630
Operating segments | International. | Other Sales
Revenue disaggregation
Total revenues	8,472	6,888	25,132	19,254
Operating segments | All others
Revenue disaggregation
Total revenues	53,161	47,623	160,967	136,986
Operating segments | All others | Other Sales
Revenue disaggregation
Total revenues	71,683	74,791	217,580	203,495
Elimination
Revenue disaggregation
Total revenues	(73,013)	(78,298)	(218,703)	(210,969)
Elimination | North America franchising
Revenue disaggregation
Total revenues	(1,037)	(824)	(3,138)	(2,291)
Elimination | North America commissaries
Revenue disaggregation
Total revenues	(53,454)	(50,306)	(158,952)	(142,169)
Elimination | All others
Revenue disaggregation
Total revenues	$ (18,522)	$ (27,168)	$ (56,613)	$ (66,509)