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Franchise and License Fees and Income (Tables) | 12 Months Ended
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Dec. 31, 2017
Franchise And License Fees And Income Disclosure [Abstract] |
Franchise and License Fees and Income |
|  | 2017 |  | 2016 |  | 2015
Initial fees, including renewal fees |  | $ | 96 |  |  | $ | 72 |  |  | $ | 71 |
Continuing fees and rental income |  | 2,210 |  |  | 2,095 |  |  | 2,011 |
Franchise and license fees and income |  | $ | 2,306 |  |  | $ | 2,167 |  |  | $ | 2,082 |

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