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

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- Definition DIPJunior Offset Amount + References No definition available. + Details
Name: | ltm_DIPJuniorOffsetAmount
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Increase (Decrease) of Issuance Cost + References No definition available. + Details
Name: | ltm_IncreaseDecreaseOfIssuanceCost
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Increase (Decrease) Shares Issued, Non-Cash Transaction + References No definition available. + Details
Name: | ltm_IncreaseDecreaseSharesIssuedNonCashTransaction
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Supplemental Cash Flow Statement Information + References No definition available. + Details
Name: | ltm_SupplementalCashFlowStatementInformationAbstract
Namespace Prefix: | ltm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Total Cash Flow + References No definition available. + Details
Name: | ltm_TotalCashFlow
Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration