STATEMENT OF CASH FLOWS - Schedule of proceeds from the issuance of shares (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplemental Cash Flow Statement Information [Abstract]
Issuance of shares	$ 0	$ 0	$ 800,000
Issuance costs	0	0	(80,000)
DIP Junior offset	0	0	(170,962)
Total cash flow	$ 0	$ 0	$ 549,038

Increase (Decrease) Shares Issued, Non-Cash Transaction

No definition available.

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