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OTHER FINANCIAL LIABILITIES (Details) - Schedule of currency balances of interest bearing loans - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Schedule Of Currency Balances Of Interest Bearing Loans Abstract
Brazilian real	$ 314,322	$ 338,953
Chilean peso (U.F.)	157,288	639,710
US Dollar	4,093,816	6,457,181
Total	$ 4,565,426	$ 7,435,844

X

- Definition

The amount of brazilian real.

+ References

No definition available.

+ Details

Name:	ltm_BrazilianReal
Namespace Prefix:	ltm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of chilean peso (U.F.).

+ References

No definition available.

+ Details

Name:	ltm_ChileanPesoUF
Namespace Prefix:	ltm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

The amount of financial liabilities that the entity does not separately disclose in the same statement or note. [Refer: Financial liabilities]

+ References

No definition available.

+ Details

Name:	ltm_TotalOtherFinancialLiabilities
Namespace Prefix:	ltm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Carrying value, as of the balance sheet date, of an agreement to sell a mortgage-backed security with an agreement to purchase a similar mortgage-backed security at a future date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822

+ Details

Name:	us-gaap_SecuredDebtDollarRolls
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant