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FINANCIAL INSTRUMENTS (Details)	12 Months Ended
	Dec. 31, 2022 USD ($)
FINANCIAL INSTRUMENTS [Abstract]
Amortized cost	$ 340,008

X

- Definition

The amount of amortized costs.

+ References

No definition available.

+ Details

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

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- References

No definition available.

+ Details

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