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ACCOUNTS RECEIVABLE FROM/PAYABLE TO RELATED ENTITIES - Narrative (Details)	12 Months Ended
	Dec. 31, 2024
Bottom of range
Disclosure of transactions between related parties [line items]
Related party term of liability	30 days
Top of range
Disclosure of transactions between related parties [line items]
Related party term of liability	1 year

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Related Party, Term of Liability

+ References

No definition available.

+ Details

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Namespace Prefix:	ltm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: