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INVESTMENTS IN SUBSIDIARIES (Details) - Schedule of significant subsidiaries | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Latam Airlines Perú S.A.[Member] |  |  |
INVESTMENTS IN SUBSIDIARIES (Details) - Schedule of significant subsidiaries [Line Items] |  |  |
Country of incorporation |  | Peru |
Functional currency |  | US$ |
Percentage of ownership |  | 99.81% | 99.81%
Lan Cargo S.A. [Member] |  |  |
INVESTMENTS IN SUBSIDIARIES (Details) - Schedule of significant subsidiaries [Line Items] |  |  |
Country of incorporation |  | Chile |
Functional currency |  | US$ |
Percentage of ownership |  | 99.89395% | 99.89395%
Lan Argentina S.A. [Member] |  |  |
INVESTMENTS IN SUBSIDIARIES (Details) - Schedule of significant subsidiaries [Line Items] |  |  |
Country of incorporation | [1] | Argentina |
Functional currency | [1] | ARS |
Percentage of ownership | [1] | 100.00% | 99.9837%
Transporte Aereo S.A. [Member] |  |  |
INVESTMENTS IN SUBSIDIARIES (Details) - Schedule of significant subsidiaries [Line Items] |  |  |
Country of incorporation |  | Chile |
Functional currency |  | US$ |
Percentage of ownership |  | 100.00% | 100.00%
Latam Airlines Ecuador S.A. [Member] |  |  |
INVESTMENTS IN SUBSIDIARIES (Details) - Schedule of significant subsidiaries [Line Items] |  |  |
Country of incorporation |  | Ecuador |
Functional currency |  | US$ |
Percentage of ownership |  | 100.00% | 100.00%
Aerovias de Integracion Regional, AIRES S.A. [Member] |  |  |
INVESTMENTS IN SUBSIDIARIES (Details) - Schedule of significant subsidiaries [Line Items] |  |  |
Country of incorporation |  | Colombia |
Functional currency |  | COP |
Percentage of ownership |  | 99.2012% | 99.19414%
TAM S.A. [Member] |  |  |
INVESTMENTS IN SUBSIDIARIES (Details) - Schedule of significant subsidiaries [Line Items] |  |  |
Country of incorporation |  | Brazil |
Functional currency |  | BRL |
Percentage of ownership |  | 100.00% | 99.99938%
[1] | See Note 1

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