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TRADE AND OTHER ACCOUNTS PAYABLES (Details)	12 Months Ended
	Dec. 31, 2022 USD ($)
Convert G [Member]
TRADE AND OTHER ACCOUNTS PAYABLES (Details) [Line Items]
Other agreed claims	$ 26,145
Convert I [Member]
TRADE AND OTHER ACCOUNTS PAYABLES (Details) [Line Items]
Other agreed claims	$ 1,548,860

X

- Definition

Payments for other claims.

+ References

No definition available.

+ Details

Name:	ltm_PaymentsForOtherClaims
Namespace Prefix:	ltm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	ltm_TRADEANDOTHERACCOUNTSPAYABLESDetailsLineItems
Namespace Prefix:	ltm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_DisaggregationOfInsuranceContractsAxis=ltm_ConvertGMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_DisaggregationOfInsuranceContractsAxis=ltm_ConvertIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: