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STATEMENT OF CASH FLOWS - Schedule of payments of loans to related entities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Supplemental Cash Flow Information [Line Items] |  |  |
Payments of loans to related entities | $ 0 | $ (1,008,483) | $ 0
Delta Air Lines, Inc. |  |  |
Supplemental Cash Flow Information [Line Items] |  |  |
Payments of loans to related entities |  | (78,947) |
Qatar Airways |  |  |
Supplemental Cash Flow Information [Line Items] |  |  |
Payments of loans to related entities |  | (78,947) |
Costa Verde Aeronautica S.A. |  |  |
Supplemental Cash Flow Information [Line Items] |  |  |
Payments of loans to related entities |  | (257,533) |
Lozuy S.A. |  |  |
Supplemental Cash Flow Information [Line Items] |  |  |
Payments of loans to related entities |  | (107,122) |
QA Investments Ltd |  |  |
Supplemental Cash Flow Information [Line Items] |  |  |
Payments of loans to related entities |  | (242,967) |
QA Investments 2 Ltd |  |  |
Supplemental Cash Flow Information [Line Items] |  |  |
Payments of loans to related entities |  | $ (242,967) |

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- Definition The amount of payments of loans to related entities. + References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Supplemental Cash Flow Information + References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:stringItemType
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- Details
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Data Type: | na
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- Details
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- Details
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