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v3.20.1

Segment information: Additional information (Details) |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
May 25, 2018 | May 26, 2017 | May 25, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Oct. 19, 2017
Operating segments: |  |  |  |  |  |
Agreement term |  |  |  | 50 years |  |
Aerostar |  |  |  |  |  |
Operating segments: |  |  |  |  |  |
Proportion of ownership interest in joint venture |  |  | 50.00% |  |  |
Airplan |  |  |  |  |  |
Operating segments: |  |  |  |  |  |
Proportion of interest acquired |  |  |  |  |  | 92.42%
Aeropuerto de Cancun |  |  |  |  |  |
Operating segments: |  |  |  |  |  |
Proportion of interest in subsidiary |  |  |  | 100.00% | 100.00% |
Airplan |  |  |  |  |  |
Operating segments: |  |  |  |  |  |
Proportion of interest acquired | 7.58% |  |  |  |  |
Proportion of interest in subsidiary | 100.00% |  |  |  |  |
Aerostar |  |  |  |  |  |
Operating segments: |  |  |  |  |  |
Proportion of interest acquired |  | 10.00% |  |  |  |
Proportion of interest in subsidiary |  | 60.00% |  |  |  |
Agreement term |  | 40 years |  |  |  |

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