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EMPLOYEE BENEFITS - Schedule of defined benefit plans (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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EMPLOYEE BENEFITS [Abstract] |  |
Retirements payments | $ 71,296 | $ 57,785
Resignation payments | 7,048 | 11,537
Other obligations | 89,083 | 53,296
Total liability for employee benefits | $ 167,427 | $ 122,618

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- Definition The amount of non-current provisions for employee benefits. [Refer: Provisions for employee benefits] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_d&doctype=Standard -URIDate 2024-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition EMPLOYEE BENEFITS [Abstract] + References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition It represents the amount of noncurrent other obligations. + References No definition available. + Details
Name: | ltm_NonCurrentOtherObligations
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition It represents the amount of noncurrent resignation payments. + References No definition available. + Details
Name: | ltm_NonCurrentResignationPayments
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition It represents the amount of noncurrent retirements payments. + References No definition available. + Details
Name: | ltm_NonCurrentRetirementsPayments
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant