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Summary of the main accounting policies: Additional information (Details) $ in Thousands, $ in Thousands, shares in Millions |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 20, 2020 USD ($) | Dec. 31, 2020 MXN ($) $ / shares shares | Dec. 31, 2019 MXN ($) $ / shares shares | Dec. 31, 2018 MXN ($) | Dec. 31, 2014 | Apr. 12, 2021 | Feb. 20, 2020 MXN ($)
Revenue From Regulated Services |  |  |  |  |  |  |
Closing foreign exchange rate |  | 19.91 | 18.86 |  |  | 20.305 |
Gain (loss) that relates to identifiable assets acquired or liabilities assumed in business combination and is of such size, nature or incidence that disclosure is relevant to understanding combined entity's financial statements |  |  |  | $ 7,029,200 |  |  |
Investments in joint ventures accounted for using equity method |  | $ 8,466 |  |  |  |  |
Restricted cash and cash equivalents |  | $ 5,055 | $ 165,622 |  |  |  |
Original concession period for operating rights |  | 50 years |  |  |  |  |
Concession period for operating rights |  | 28 years |  |  |  |  |
Applicable tax rate |  | 30.00% | 30.00% | 30.00% | 30.00% |  |
Termination benefits expense |  | $ 2,382 | $ 1,922 | $ 1,595 |  |  |
Income from continuing operations attributable to owners of parent |  | $ 1,972,319 | $ 5,465,822 | $ 4,987,601 |  |  |
Weighted average number of ordinary shares outstanding | shares |  | 300 | 300 |  |  |  |
Basic earnings per share | $ / shares |  | $ 6.5744 | $ 18.22 |  |  |  |
Airport Development Group, LLC |  |  |  |  |  |  |
Revenue From Regulated Services |  |  |  |  |  |  |
Percentage Of Equity Interest Acquired | 50.00% |  |  |  |  |  |
Investments in joint ventures accounted for using equity method | $ 500 |  |  |  |  |  | $ 10,556
Airplan |  |  |  |  |  |  |
Revenue From Regulated Services |  |  |  |  |  |  |
Closing foreign exchange rate | $ / shares |  | 171.530 | 173.630 |  |  |  |
Original concession period for operating rights |  | 40 years |  |  |  |  |
Concession period for operating rights |  | 12 years |  |  |  |  |
Applicable tax rate |  | 33.00% | 33.00% |  |  |  |
Airplan | Minimum |  |  |  |  |  |  |
Revenue From Regulated Services |  |  |  |  |  |  |
Original concession period for operating rights |  | 24 years |  |  |  |  |
Aerostar |  |  |  |  |  |  |
Revenue From Regulated Services |  |  |  |  |  |  |
Closing foreign exchange rate | $ / shares |  | 19.91 | 18.86 |  |  |  |
Restricted cash and cash equivalents |  | $ 5,055 | $ 26,849 |  |  |  |
Original concession period for operating rights |  | 40 years |  |  |  |  |
Concession period for operating rights |  | 33 years |  |  |  |  |
Aerostar |  |  |  |  |  |  |
Revenue From Regulated Services |  |  |  |  |  |  |
Applicable tax rate |  | 10.00% | 10.00% |  |  |  |

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