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Description of the business and summary of significant accounting policies - Additional details (Details) $ in Thousands, $ in Thousands | 1 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2020 USD ($) | May 31, 2020 | Apr. 30, 2020 | Dec. 31, 2020 USD ($) item | Dec. 31, 2020 MXN ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 MXN ($) | Dec. 31, 2018 MXN ($) | Dec. 31, 2017 MXN ($)
IFRS Statement [Line Items] |  |  |  |  |  |  |  |  |
Cash and cash equivalents. | $ 506,468 |  |  | $ 506,468 | $ 10,103,385 | $ 400,025 | $ 7,979,972 | $ 5,862,942 | $ 6,950,879
Covid [Member] |  |  |  |  |  |  |  |  |
IFRS Statement [Line Items] |  |  |  |  |  |  |  |  |
Maximum Reduction in Available Seat Miles |  | 90.00% | 80.00% |  |  |  |  |  |
Percentage of Available Seat Miles | 100.00% |  |  |  |  |  |  |  |
Number Of Suppliers With Whom The Entity Negotiated Cost Reductions | item |  |  |  | 360 |  |  |  |  |
Savings Through Cost Reductions And Deferral Agreements With Suppliers | $ | $ 200,000 |  |  | $ 200,000 |  |  |  |  |

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- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph B13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_i&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Represents the maximum reduction in available seat miles. + References No definition available. + Details
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- Definition Represents the number of suppliers with whom the entity negotiated cost reductions. + References No definition available. + Details
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- Definition Represents the amount of savings through cost reductions and deferral agreements with suppliers. + References No definition available. + Details
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- Details
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