Segment Information - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Revenue disaggregation
Total revenues	$ 515,008	$ 460,623	$ 1,026,754	$ 870,482
Domestic Company-owned restaurants
Revenue disaggregation
Total revenues	196,124	186,506	393,358	347,946
North America franchising
Revenue disaggregation
Total revenues	32,475	24,174	65,190	43,614
North America commissaries
Revenue disaggregation
Total revenues	186,641	167,619	371,519	323,041
International.
Revenue disaggregation
Total revenues	37,614	28,093	72,221	54,152
International. | International other revenue
Revenue disaggregation
Total revenues	(8,663)	(6,273)	(16,660)	(12,366)
All others
Revenue disaggregation
Total revenues	62,154	54,231	124,466	101,729
All others | International other revenue
Revenue disaggregation
Total revenues	8,663	6,273	16,660	12,366
Operating segments
Revenue disaggregation
Total revenues	515,008	460,623	1,026,754	870,482
Operating segments | Company-owned Restaurants
Revenue disaggregation
Total revenues	196,124	186,506	393,358	347,946
Operating segments | Franchise royalties and fees
Revenue disaggregation
Total revenues	46,672	32,710	92,655	62,340
Operating segments | Commissary Sales
Revenue disaggregation
Total revenues	264,527	235,326	523,874	451,797
Operating segments | Other Sales
Revenue disaggregation
Total revenues	81,097	72,617	162,557	141,070
Operating segments | Domestic Company-owned restaurants
Revenue disaggregation
Total revenues	196,124	186,506	393,358	347,946
Operating segments | Domestic Company-owned restaurants | Company-owned Restaurants
Revenue disaggregation
Total revenues	196,124	186,506	393,358	347,946
Operating segments | North America franchising
Revenue disaggregation
Total revenues	32,475	24,174	65,190	43,614
Operating segments | North America franchising | Franchise royalties and fees
Revenue disaggregation
Total revenues	33,516	24,967	67,291	45,081
Operating segments | North America commissaries
Revenue disaggregation
Total revenues	186,641	167,619	371,519	323,041
Operating segments | North America commissaries | Commissary Sales
Revenue disaggregation
Total revenues	240,069	214,976	477,017	414,904
Operating segments | International.
Revenue disaggregation
Total revenues	46,277	34,366	88,881	66,518
Other revenue from marketing fund contributions and sublease rental income	8,700	6,300	16,700	12,400
Operating segments | International. | Franchise royalties and fees
Revenue disaggregation
Total revenues	13,156	7,743	25,364	17,259
Operating segments | International. | Commissary Sales
Revenue disaggregation
Total revenues	24,458	20,350	46,857	36,893
Operating segments | International. | Other Sales
Revenue disaggregation
Total revenues	8,663	6,273	16,660	12,366
Operating segments | All others
Revenue disaggregation
Total revenues	53,491	47,958	107,806	89,363
Operating segments | All others | Other Sales
Revenue disaggregation
Total revenues	72,434	66,344	145,897	128,704
Elimination
Revenue disaggregation
Total revenues	(73,412)	(66,536)	(145,690)	(132,671)
Elimination | North America franchising
Revenue disaggregation
Total revenues	(1,041)	(793)	(2,101)	(1,467)
Elimination | North America commissaries
Revenue disaggregation
Total revenues	(53,428)	(47,357)	(105,498)	(91,863)
Elimination | All others
Revenue disaggregation
Total revenues	$ (18,943)	$ (18,386)	$ (38,091)	$ (39,341)