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TRADE AND OTHER ACCOUNTS RECEIVABLE CURRENT, AND NON- CURRENT ACCOUNTS RECEIVABLE (Details) - Schedule of provision for impairment losses of trade debtors and other accounts receivable - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Schedule Of Provision For Impairment Losses Of Trade Debtors And Other Accounts Receivable Abstract |  |  |
Opening balance | $ (81,004) | $ (122,193) | $ (100,402)
Write-offs | 5,966 | 26,435 | 30,754
(Increase) Decrease | 7,806 | 14,754 | (52,545)
Closing balance | $ (67,232) | $ (81,004) | $ (122,193)

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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: | credit
Period Type: | duration

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