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TRADE AND OTHER ACCOUNTS PAYABLES - Schedule of composition of current trade and other accounts payable (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure Of Trade And Other Payables [Abstract] |  |
Maintenance and technical purchases | $ 380,853 | $ 293,768
Boarding Fees | 268,353 | 249,291
Aircraft Fuel | 220,343 | 94,878
Airport charges and overflight | 157,691 | 138,901
Handling and ground handling | 122,721 | 133,114
Leases, maintenance and IT services | 121,901 | 100,842
Other personnel expenses | 106,277 | 96,351
Professional services and advisory | 77,548 | 63,756
Services on board | 72,902 | 58,365
Marketing | 46,751 | 51,035
Aircraft Insurance | 16,756 | 12,256
Air companies | 9,778 | 26,371
Crew | 20,560 | 25,936
Agencies sales commissions | 15,649 | 16,899
Others | 123,731 | 46,438
Total | $ 1,761,814 | $ 1,408,201

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- Definition Current Agencies Sales Commissions + References No definition available. + Details
Name: | ltm_CurrentAgenciesSalesCommissions
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Current Air Companies + References No definition available. + Details
Name: | ltm_CurrentAirCompanies
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current aircraft fuel. + References No definition available. + Details
Name: | ltm_CurrentAircraftFuel
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Current Aircraft Insurance + References No definition available. + Details
Name: | ltm_CurrentAircraftInsurance
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current airport charges and overflight. + References No definition available. + Details
Name: | ltm_CurrentAirportChargesAndOverflight
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current boarding fee. + References No definition available. + Details
Name: | ltm_CurrentBoardingFee
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition It represents the amount of current crew. + References No definition available. + Details
Name: | ltm_CurrentCrew
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current handling and ground handling. + References No definition available. + Details
Name: | ltm_CurrentHandlingAndGroundHandling
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition It represents the amount of current leases maintenance and IT services. + References No definition available. + Details
Name: | ltm_CurrentLeasesMaintenanceAndITServices
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current marketing. + References No definition available. + Details
Name: | ltm_CurrentMarketing
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current other personnel expenses. + References No definition available. + Details
Name: | ltm_CurrentOtherPersonnelExpenses
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current professional services and advisory. + References No definition available. + Details
Name: | ltm_CurrentProfessionalServicesAndAdvisory
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition It represents the amount of current services on board. + References No definition available. + Details
Name: | ltm_CurrentServicesOnBoard
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition It represents the amount of current suppliers technical purchases. + References No definition available. + Details
Name: | ltm_CurrentSuppliersTechnicalPurchases
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Disclosure Of Trade And Other Payables + References No definition available. + Details
Name: | ltm_DisclosureOfTradeAndOtherPayablesAbstract
Namespace Prefix: | ltm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition It represents the amount of other current payables. + References No definition available. + Details
Name: | ltm_OtherCurrentPayables1
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current trade payables and current other payables. + References No definition available. + Details
Name: | ltm_TradeAndOtherAccountsPayablesCurrent
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant