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OTHER NON-FINANCIAL LIABILITIES (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 USD ($)
Disclosure Of Non Financial Other Liabilities Explanatory [Abstract] |
Accrued committed compensation | $ 58,509
Compensation deferred income | 118,188
Commercial accounts payable | $ 29,507

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- References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Commercial accounts payable + References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Deferred Income compensation committed + References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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