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NON-CURRENT ASSETS AND DISPOSAL GROUP CLASSIFIED AS HELD FOR SALE (Details) | Dec. 31, 2019 USD ($)
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Disclosure of non-current assets or disposal groups classified as held for sale [text block] [Abstract] |
Assets reclassified from inventories net realizable value | $ 2

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- Definition It repesent by assets reclassified from inventories net realizable value. + References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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