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Short and long-term documents: Additional information (Details) $ in Thousands, $ in Thousands | May 22, 2013 | Dec. 31, 2021 MXN ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 MXN ($) | Dec. 31, 2020 USD ($) | Jun. 24, 2015 MXN ($) | Jun. 24, 2015 USD ($) | Dec. 31, 2013 MXN ($) | Dec. 13, 2013 USD ($)
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Aerostar |  |  |  |  |  |  |  |  |
Long-term debt: |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  | $ 4,471,000 | $ 350,000
Borrowings, interest rate |  |  |  |  |  | 6.75% | 6.75% |  |
Senior secured notes due on March 22, 2035 |  |  |  |  |  |  |  |  |
Long-term debt: |  |  |  |  |  |  |  |  |
Notional amount |  | $ 7,207,061 | $ 400,000 | $ 7,265,206 | $ 400,000 |  |  |  |
Borrowings, interest rate | 5.75% |  |  |  |  |  |  |  |
Debt Instrument, Quoted Yield | 2.39% |  |  |  |  |  |  |  |
Spread Credit | 336 |  |  |  |  |  |  |  |
Senior secured notes due on March 22, 2035 | Aerostar |  |  |  |  |  |  |  |  |
Long-term debt: |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  | $ 737,000 | $ 50,000 |  |

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