INVENTORIES - Schedule of average acquisition cost net of their obsolescence provision (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Classes of current inventories [abstract]
Provision for obsolescence Technical stock	$ 76,167	$ 45,621
Provision for obsolescence Non-technical stock	8,700	5,228
Total	$ 84,867	$ 50,849

It represents the amount of provision for obsolescense non technical stock.

No definition available.

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