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STATEMENT OF CASH FLOWS (Details) - Schedule of obtained (payments) of flows related to financing - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
STATEMENT OF CASH FLOWS (Details) - Schedule of obtained (payments) of flows related to financing [Line Items] |  |
Capital raising | $ 7,217,900 | $ 661,609
Payments Capital | (8,891,330,000) | (566,414,000)
Payments Interest | (521,716,000) | (104,621,000)
Aircraft financing [Member] |  |
STATEMENT OF CASH FLOWS (Details) - Schedule of obtained (payments) of flows related to financing [Line Items] |  |
Capital raising |  |
Payments Capital | (331,292,000) | (463,048,000)
Payments Interest | (52,088,000) | (63,763,000)
Lease Liability [Member] |  |
STATEMENT OF CASH FLOWS (Details) - Schedule of obtained (payments) of flows related to financing [Line Items] |  |
Capital raising |  |
Payments Capital | (131,917,000) | (103,366,000)
Payments Interest | (49,075,000) | (17,768,000)
Non-aircraft financing [Member] |  |
STATEMENT OF CASH FLOWS (Details) - Schedule of obtained (payments) of flows related to financing [Line Items] |  |
Capital raising | 7,217,900 | 661,609
Payments Capital | (8,428,121,000) |
Payments Interest | $ (420,553,000) | $ (23,090,000)

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- Definition The capital raising. + References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The payments to capital. + References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration

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- Definition The payments to capital interest. + References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | ltm_
Data Type: | xbrli:stringItemType
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X
- Details
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Namespace Prefix: |
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Period Type: |

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |