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Revenue from Contracts with Customers: Commercial services (Details) - MXN ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Revenue from Contracts with Customers: |  |  |
Commercial services | $ 2,544,474 | $ 4,265,669 | $ 4,121,709
Duty free shops |  |  |
Revenue from Contracts with Customers: |  |  |
Commercial services | 991,833 | 1,785,508 | 1,861,116
Food and beverage |  |  |
Revenue from Contracts with Customers: |  |  |
Commercial services | 449,340 | 820,001 | 738,371
Advertising revenues |  |  |
Revenue from Contracts with Customers: |  |  |
Commercial services | 92,683 | 187,192 | 161,214
Car rental companies |  |  |
Revenue from Contracts with Customers: |  |  |
Commercial services | 485,725 | 673,969 | 611,864
Banking and currency exchange services |  |  |
Revenue from Contracts with Customers: |  |  |
Commercial services | 72,563 | 115,927 | 119,855
Teleservices |  |  |
Revenue from Contracts with Customers: |  |  |
Commercial services | 15,174 | 16,038 | 14,139
Ground transportations |  |  |
Revenue from Contracts with Customers: |  |  |
Commercial services | 49,721 | 98,033 | 76,106
Other services |  |  |
Revenue from Contracts with Customers: |  |  |
Commercial services | $ 387,435 | $ 569,001 | $ 539,044

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- Definition The amount of revenue arising from the rendering of cargo and mail transport services. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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