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CURRENT AND DEFERRED TAXES (Details) - Schedule of deferred taxes related to items charged to equity - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Schedule of deferred taxes related to items charged to equity [Abstract] |  |
Aggregate deferred taxation of components of other comprehensive income | $ (2,841) | $ 1,883

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- Definition The amount of income tax relating to amounts recognized in other comprehensive income. + References No definition available. + Details
Name: | ltm_IncomeTaxRelatingToComponentOfOtherComprehensiveIncome
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | ltm_ScheduleOfDeferredTaxesRelatedToItemsChargedToEquityAbstract
Namespace Prefix: | ltm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration