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OTHER NON-FINANCIAL LIABILITIES - Schedule of deferred income movement (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Deferred Income Movement [Roll Forward] |  |  |
Initial balance | $ 2,953,289 | $ 2,785,193 | $ 2,738,888
Recognition | 14,238,959 | 9,772,469 | 4,221,168
Use | (13,505,496) | (9,077,188) | (4,053,345)
Loyalty program (Award and redeem) | 17,680 | (241,201) | (12,091)
Expiration of tickets | (391,998) | (314,027) | (114,227)
Translation Difference | 84,988 | 4,585 | 0
Others provisions | (3,822) | 23,458 | 4,800
Final balance | 3,393,600 | $ 2,953,289 | $ 2,785,193
Recognized income from Delta Air Lines | $ 40,500 |  |

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- Definition The increase (decrease) in other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2023-01-01 -Paragraph 84 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2023-en-r&anchor=para_84&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of non-financial liabilities that the entity does not separately disclose in the same statement or note. [Refer: Other financial liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition Deferred Income Movement + References No definition available. + Details
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- Definition Expiration of tickets. + References No definition available. + Details
Name: | ltm_ExpirationOfTickets
Namespace Prefix: | ltm_
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Balance Type: | debit
Period Type: | duration

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- Definition Amount of loyalty program. + References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of recognition. + References No definition available. + Details
Name: | ltm_Recognition
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Balance Type: | credit
Period Type: | duration

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- Definition Related Party Recognized Income + References No definition available. + Details
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- Definition Amount of translation difference deferred income. + References No definition available. + Details
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- Definition Amount of use deferred income. + References No definition available. + Details
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