CURRENT AND DEFERRED TAXES (Details) - Schedule of deferred tax assets not recognized - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Deferred tax expense (income) [abstract]
Tax losses	$ 110,933,000	$ 137,761,000
Total Deferred tax assets not recognized	$ 110,933	$ 137,761,000

The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss.

No definition available.

Name:	ltm_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss1
Namespace Prefix:	ltm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration