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v3.25.4

Property and equipment - Additional Information (Detail) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 USD ($) aircraft flight | Dec. 31, 2024 USD ($) aircraft | Dec. 31, 2023 USD ($)
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Average duration of long-term lease agreement | 16 years |  |
Gain on engine exchange transactions | $ 20,700 |  |
Advance payments on aircraft purchase contracts and others | $ 251,430 | $ 0 | $ 200,000
Number of new aircrafts grounded | aircraft | 21 |  |
Number of flights canceled | flight | 1,788 |  |
Capitalized expenditure improvements during the year | $ 3,100 | 6,700 |
Aircraft |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Carrying value pledged as collateral obligation | 1,900,000 | 1,700,000 |
Payments from contracts held for dealing or trading purpose | 301,600 | $ 14,000 |
Advance payments on aircraft purchase contracts and others | $ 251,400 |  |
B-737-Max |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Number of aircraft capitalized | aircraft | 12 | 6 |
Average duration of long-term lease agreement | 10 years |  |

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