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OTHER INCOME, BY FUNCTION - Schedule of other income by function (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Other Operating Income [Line Items] |  |  |
Tours | $ 60,437 | $ 36,297 | $ 24,068
Aircraft leasing | 0 | 0 | 18,164
Customs and warehousing | 37,710 | 27,553 | 30,323
Maintenance | 5,632 | 7,784 | 7,995
Income from non-airlines products LATAM Pass | 35,904 | 15,148 | 23,954
Other miscellaneous income | 60,986 | 61,859 | 49,782
Total | $ 200,669 | 148,641 | 154,286
Delta |  |  |
Other Operating Income [Line Items] |  |  |
Total |  |  | 30,408
LATAM Pass Loyalty Program |  |  |
Other Operating Income [Line Items] |  |  |
Total |  | $ 4,700 | $ 3,700

X
- Definition The amount of miscellaneous other operating income. [Refer: Other operating income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of operating income that the entity does not separately disclose in the same statement or note. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2024-01-01 -Paragraph 35 -Subparagraph b -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2024-en-r&anchor=para_35_b_iv&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 103 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_103&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 102 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_102&doctype=Standard -URIDate 2024-03-27 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition It represents the amount of aircraft leasing income. + References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition It represents the amount of customs and warehousing income. + References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Non-Airline Products Income + References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Other Operating Income [Line Items] + References No definition available. + Details
Name: | ltm_OtherOperatingIncomeLineItems
Namespace Prefix: | ltm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition It represents the amount of repairs and maintenance expense income. + References No definition available. + Details
Name: | ltm_RepairsAndMaintenanceExpenseIncome
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition It represents the amount of tours income. + References No definition available. + Details
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Period Type: | duration

X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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