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EVENTS SUBSEQUENT TO THE DATE OF THE FINANCIAL STATEMENTS (Details) | 12 Months Ended
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Dec. 31, 2022
Tranche [Member] |
EVENTS SUBSEQUENT TO THE DATE OF THE FINANCIAL STATEMENTS (Details) [Line Items] |
Description of tranche transfers | After December 31, 2022, and until the date of issuance of these financial statements, there is no knowledge of other events of a financial or other nature, which significantly affect the balances or interpretation thereof.

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- Definition The description of the nature of a non-adjusting event after the reporting period. [Refer: Non-adjusting events after reporting period [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 10 -IssueDate 2022-03-24 -Paragraph 21 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=10&code=ifrs-tx-2022-en-r&anchor=para_21_a&doctype=Standard -URIDate 2022-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- 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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- Details
Name: | ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=ltm_TrancheMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |