v3.26.1
Segment Information - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 28, 2026
Jun. 29, 2025
Jun. 28, 2026
Jun. 29, 2025
Disaggregation of Revenue [Line Items]        
Total revenues $ 482,397 $ 529,166 $ 961,006 $ 1,047,475
Company-owned restaurant sales        
Disaggregation of Revenue [Line Items]        
Total revenues 142,182 178,989 285,316 352,870
Franchise royalties and fees        
Disaggregation of Revenue [Line Items]        
Total revenues 46,585 48,302 94,163 96,358
Commissary sales        
Disaggregation of Revenue [Line Items]        
Total revenues 230,818 234,576 453,459 463,517
Other revenues        
Disaggregation of Revenue [Line Items]        
Total revenues 21,459 23,136 43,247 46,893
Advertising funds revenue        
Disaggregation of Revenue [Line Items]        
Total revenues 41,353 44,163 84,821 87,837
Operating segments        
Disaggregation of Revenue [Line Items]        
Total revenues 473,073 524,243 937,412 1,035,337
Operating segments | Domestic Company-owned Restaurants        
Disaggregation of Revenue [Line Items]        
Total revenues 138,936 175,797 278,607 346,592
Operating segments | Domestic Company-owned Restaurants | Company-owned restaurant sales        
Disaggregation of Revenue [Line Items]        
Total revenues 138,936 175,797 278,607 346,592
Operating segments | Domestic Company-owned Restaurants | Franchise royalties and fees        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Operating segments | Domestic Company-owned Restaurants | Commissary sales        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Operating segments | Domestic Company-owned Restaurants | Other revenues        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Operating segments | Domestic Company-owned Restaurants | Advertising funds revenue        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Operating segments | North America Franchising        
Disaggregation of Revenue [Line Items]        
Total revenues 33,268 36,603 67,955 73,414
Operating segments | North America Franchising | Company-owned restaurant sales        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Operating segments | North America Franchising | Franchise royalties and fees        
Disaggregation of Revenue [Line Items]        
Total revenues 33,268 36,603 67,955 73,414
Operating segments | North America Franchising | Commissary sales        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Operating segments | North America Franchising | Other revenues        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Operating segments | North America Franchising | Advertising funds revenue        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Operating segments | North America Commissaries        
Disaggregation of Revenue [Line Items]        
Total revenues 255,829 267,659 502,583 532,036
Operating segments | North America Commissaries | Company-owned restaurant sales        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Operating segments | North America Commissaries | Franchise royalties and fees        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Operating segments | North America Commissaries | Commissary sales        
Disaggregation of Revenue [Line Items]        
Total revenues 255,829 267,659 502,583 532,036
Operating segments | North America Commissaries | Other revenues        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Operating segments | North America Commissaries | Advertising funds revenue        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Operating segments | International        
Disaggregation of Revenue [Line Items]        
Total revenues 45,040 44,184 88,267 83,295
Operating segments | International | Company-owned restaurant sales        
Disaggregation of Revenue [Line Items]        
Total revenues 3,246 3,192 6,709 6,278
Operating segments | International | Franchise royalties and fees        
Disaggregation of Revenue [Line Items]        
Total revenues 13,548 12,943 26,673 25,447
Operating segments | International | Commissary sales        
Disaggregation of Revenue [Line Items]        
Total revenues 19,797 19,730 37,838 35,752
Operating segments | International | Other revenues        
Disaggregation of Revenue [Line Items]        
Total revenues 3,497 3,409 6,987 6,693
Operating segments | International | Advertising funds revenue        
Disaggregation of Revenue [Line Items]        
Total revenues 4,952 4,910 10,060 9,125
All Other        
Disaggregation of Revenue [Line Items]        
Total revenues 65,558 73,761 135,942 148,092
All Other | Company-owned restaurant sales        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
All Other | Franchise royalties and fees        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
All Other | Commissary sales        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
All Other | Other revenues        
Disaggregation of Revenue [Line Items]        
Total revenues 21,535 24,301 43,497 49,380
All Other | Advertising funds revenue        
Disaggregation of Revenue [Line Items]        
Total revenues 44,023 49,460 92,445 98,712
Elimination of Intersegment Revenue        
Disaggregation of Revenue [Line Items]        
Total revenues (56,234) (68,838) (112,348) (135,954)
Elimination of Intersegment Revenue | Company-owned restaurant sales        
Disaggregation of Revenue [Line Items]        
Total revenues 0 0 0 0
Elimination of Intersegment Revenue | Franchise royalties and fees        
Disaggregation of Revenue [Line Items]        
Total revenues (231) (1,244) (465) (2,503)
Elimination of Intersegment Revenue | Commissary sales        
Disaggregation of Revenue [Line Items]        
Total revenues (44,808) (52,813) (86,962) (104,271)
Elimination of Intersegment Revenue | Other revenues        
Disaggregation of Revenue [Line Items]        
Total revenues (3,573) (4,574) (7,237) (9,180)
Elimination of Intersegment Revenue | Advertising funds revenue        
Disaggregation of Revenue [Line Items]        
Total revenues $ (7,622) $ (10,207) $ (17,684) $ (20,000)