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TRADE AND OTHER ACCOUNTS RECEIVABLE CURRENT, AND NON- CURRENT ACCOUNTS RECEIVABLE - Schedule of provision for impairment losses of trade debtors and other accounts receivable (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Impairment Losses [Roll Forward] |  |  |
Opening balance | $ (64,778) | $ (67,232) | $ (81,004)
Write-offs | 4,578 | 7,122 | 5,966
(Increase) Decrease | 4,263 | (4,668) | 7,806
Closing balance | $ (55,937) | $ (64,778) | $ (67,232)

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

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- Definition Amount of increase decrease allowance for credit losses related to receivables. + References No definition available. + Details
Name: | ltm_IncreaseDecreaseAllowanceForImpairmentLoss
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition It represents the amount of trade receivables allowance for impairment loss. + References No definition available. + Details
Name: | ltm_TradeReceivablesAllowanceForImpairmentLoss
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of write off allowance for credit losses related to receivables. + References No definition available. + Details
Name: | ltm_WriteOffsAllowanceForImpairmentLoss
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration