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Summary of Significant Accounting Policies Concentration of Risk (Details) | 12 Months Ended
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Jan. 02, 2022 customers countries number_of_restaurants states distributors | Jan. 03, 2021 customers | Dec. 29, 2019 customers
Concentration Risk |  |  |
Number of Customers Accounting for More Than 10% of Revenues | customers | 0 | 0 | 0
Number of Restaurants | 6,949 |  |
U.S. |  |  |
Concentration Risk |  |  |
Number of Main In-line Distributors | distributors | 1 |  |
Number of Additional In-line Distributors | distributors | 4 |  |
Number of States Where Restaurants are Located | states | 50 |  |
International |  |  |
Concentration Risk |  |  |
Number of Countries Entity Operates (Including Canada) | countries | 31 |  |
Entity Operated Units |  |  |
Concentration Risk |  |  |
Number of Restaurants | 408 |  |
Entity Operated Units | Canada |  |  |
Concentration Risk |  |  |
Number of Restaurants | 0 |  |
U.S Main In-Line Distributor Risk | U.S. | Restaurants in U.S. System |  |  |
Concentration Risk |  |  |
Concentration Risk, Percentage | 67.00% |  |
U.S. Additional In-Line Distributor Risk | U.S. | Restaurants in U.S. System |  |  |
Concentration Risk |  |  |
Concentration Risk, Percentage | 32.00% |  |
Geographic Concentration Risk, Canada | Canada | Franchised Units |  |  |
Concentration Risk |  |  |
Concentration Risk, Percentage | 10.00% |  |

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