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Description of the business and summary of significant accounting policies - Relevant events (Details) $ in Billions | Feb. 21, 2020 | Jun. 20, 2019 MXN ($) item | Feb. 16, 2018 shares | Dec. 28, 2017 aircraft | Nov. 10, 2016 | Feb. 17, 2010 | May 09, 2005
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Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Notes issued |  | $ 1.5 |  |  |  |  |
Authorized amount under the program |  | $ 3.0 |  |  |  |  |
Maturity of notes |  | 5 years |  |  |  |  |
Term of authorization to provide air transportation services | 20 years |  |  |  |  |  |
Number of aircraft purchased | aircraft |  |  |  | 80 |  |  |
Concesionaria |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Term of authorization to provide air transportation services |  |  |  |  |  | 10 years | 5 years
Volaris Costa Rica |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Term of authorization to provide air transportation services |  |  |  |  | 5 years |  |
28-day TIIE |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Basis points |  | 1.75% |  |  |  |  |
Asset backed trust notes ("CEBUR"), in Mexican pesos |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Number of notes issued | item |  | 15,000,000 |  |  |  |  |
Maturity of notes |  | 5 years |  |  |  |  |
Basis points |  | 1.75% |  |  |  |  |
Series B shares |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Conversion of equivalent number of shares | shares |  |  | 45,968,598 |  |  |  |

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