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Introduction and Basis of Reporting (Narrative) (Details) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 25, 2019 country territory restaurant state | Dec. 26, 2018 restaurant | Dec. 27, 2017 restaurant | Dec. 28, 2016 restaurant
Franchisor Disclosure [Line Items] |  |  |  |
Number of states in which entity operates | state | 50 |  |  |
Number of territories in which entity operates | territory | 2 |  |  |
Number of foreign countries in which entity operates | country | 12 |  |  |
Number of restaurants | 1,703 | 1,709 | 1,735 |
California |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |
Percentage of restaurants operated by geographic region | 23.00% |  |  |
Texas |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |
Percentage of restaurants operated by geographic region | 12.00% |  |  |
Florida |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |
Percentage of restaurants operated by geographic region | 8.00% |  |  |
Franchise |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |
Number of restaurants | 1,635 | 1,536 | 1,557 | 1,564
Company-owned restaurants |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |
Number of restaurants | 68 | 173 | 178 | 169

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