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Summary of Significant Accounting Policies Restaurant Information by Ownership Type (Detail) | Dec. 31, 2019 Restaurant | Dec. 31, 2018 Restaurant | Dec. 31, 2017 Restaurant
--- | --- | --- | ---
Segment Reporting Information [Line Items] |  |  |
Number of Restaurants | 38,695 | 37,855 | 37,241
Franchised restaurants: |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of Restaurants | 36,059 | 35,085 | 34,108
Company-operated restaurants: |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of Restaurants | 2,636 | 2,770 | 3,133
Conventional franchised | Franchised restaurants: |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of Restaurants | 21,837 | 21,685 | 21,366
Developmental licensed | Franchised restaurants: |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of Restaurants | 7,648 | 7,225 | 6,945
Affiliated | Franchised restaurants: |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of Restaurants | 6,574 | 6,175 | 5,797

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- Details
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- Details
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- Details
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- Details
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