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GENERAL INFORMATION - Narrative (Details) $ in Thousands |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended |
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Dec. 29, 2023 shares | Oct. 30, 2023 USD ($) shares | Sep. 15, 2023 USD ($) | Sep. 11, 2023 shares | Aug. 04, 2023 USD ($) shares | Aug. 01, 2023 shares | Jul. 28, 2023 shares | Jul. 21, 2023 USD ($) | Jun. 14, 2023 USD ($) shares | Jun. 07, 2023 USD ($) | Apr. 14, 2023 ARS ($) | Mar. 29, 2023 USD ($) | Dec. 22, 2022 shares | Dec. 31, 2023 employee shareholder shares | Dec. 06, 2023
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of subscribed shares (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 604,437,877,587 |
Total number of shareholders | shareholder |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,100 |
Number of average employees | employee |  |  |  |  |  |  |  |  |  |  |  |  |  | 34,174 |
Number of employees | employee |  |  |  |  |  |  |  |  |  |  |  |  |  | 35,568 |
LATAM Airlines Group S.A. | TAM S.A. and Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital increase | $ |  |  | $ 106,104,000 |  |  |  |  |  |  | $ 308,031,000 |  | $ 785,865,000 |  |  |
LATAM Airlines Group S.A. | TAM Linheas Aéreas S.A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital increase | $ |  |  | $ 106,104,000 |  |  |  |  |  |  |  |  |  |  |  |
Latam Travel S.A. | Lan Pax Group S.A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest |  |  |  |  |  |  |  |  |  |  |  |  | 5.69% |  |
Latam Travel S.A. | Inversora Cordillera S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest |  |  |  |  |  |  |  |  |  |  |  |  | 0.30% |  |
Latam Travel S.A. | LATAM Airlines Group S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest |  |  |  |  |  |  |  |  |  |  |  |  | 94.01% |  |
TAM S.A. and Subsidiaries | TAM Linheas Aéreas S.A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital increase | $ |  |  |  |  |  |  |  |  |  | $ 308,031,000 |  | 785,865,000 |  |  |
Holdco Colombia I SpA | Aerovías de Integración Regional S.A. Aires S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital increase | $ |  |  |  |  |  |  |  |  |  |  |  | $ 120,410,000 |  |  |
Lan Argentina SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital reduction | $ |  |  |  |  |  |  |  |  |  |  | $ 160,170 |  |  |  |
Lan Argentina SA | Lan Pax Group S.A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest | 4.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lan Argentina SA | Inversora Cordillera S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest | 94.96% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lan Argentina SA | LATAM Airlines Group S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest | 0.05% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Inversiones Lan S.A. | Aerovías de Integración Regional S.A. Aires S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired (in shares) |  | 183 |  |  |  |  |  |  | 923 |  |  |  |  |  |
Payments for subsidiary shares acquired | $ |  | $ 2,000 |  |  |  |  |  |  | $ 23,000 |  |  |  |  |  |
Inversiones Lan S.A. | Americonsult SA de CV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired (in shares) |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |
Holdco Ecuador S.A | Latam Airlines Ecuador S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital increase | $ |  |  |  |  |  |  |  | $ 3,100,000 |  |  |  |  |  |  |
Lan Cargo S.A. | Lan Cargo Overseas Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired (in shares) |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |
Lan Cargo S.A. | Americonsult SA de CV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired (in shares) |  |  |  | 499 |  |  |  |  |  |  |  |  |  |  |
Lan Cargo S.A. | Consultoría Administrativa Profesional S.A. de C.V. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired (in shares) |  |  |  | 49,500 |  |  |  |  |  |  |  |  |  |  |
Lan Cargo S.A. | Transporte Aéreo S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired (in shares) |  |  |  | 109,662 |  |  |  |  |  |  |  |  |  |  |
Lan Cargo S.A. | Inversiones Aereas S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired (in shares) |  |  |  | 15,216 |  |  |  |  |  |  |  |  |  |  |
Lan Cargo S.A. | Prime Airport Services Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired (in shares) |  |  |  | 105 |  |  |  |  |  |  |  |  |  |  |
Lan Cargo S.A. | Americonsult de Guatemala, Sociedad Anónima |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired (in shares) |  |  |  | 50 |  |  |  |  |  |  |  |  |  |  |
Lan Cargo S.A. | Americonsult de Costa Rica S.A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired (in shares) |  |  |  | 66 |  |  |  |  |  |  |  |  |  |  |
Lan Cargo S.A. | Prime Cargo SpA. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00%
Lan Pax Group S.A | Aerovías de Integración Regional S.A. Aires S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) |  |  |  |  | 47,010 |  |  |  |  |  |  |  |  |  |
Lan Pax Group S.A | Holdco Colombia I SpA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital increase | $ |  |  |  |  | $ 347,000 |  |  |  |  |  |  |  |  |  |
Inversora Cordillera S.A. | Lan Pax Group S.A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest | 99.95% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Inversora Cordillera S.A. | LATAM Airlines Group S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest | 0.05% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Banco de Chile on behalf of State Street |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest |  |  |  |  |  |  |  |  |  |  |  |  |  | 45.81% |
Banco de Chile on behalf of Non-Resident Third Parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest |  |  |  |  |  |  |  |  |  |  |  |  |  | 11.94% |
Delta Air Lines, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.05% |
Qatar Airways |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.03% |
Ordinary shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of statutory capital shares (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 604,441,789,335 |
Preference shares | LATAM Airlines Group S.A. | Latam Travel S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 1,390,468,967 |  |
Preference shares | LATAM Airlines Group S.A. | Inversora Cordillera S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired (in shares) | 2,392,166 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preference shares | LATAM Airlines Group S.A. | Lan Argentina SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired (in shares) | 53,376 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Administration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of employees | employee |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,149 |
Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of employees | employee |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,655 |
Cabin crew |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of employees | employee |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,688 |
Command crew |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of employees | employee |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,076 |
Shareholders |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of share capital in form of ADRs |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.01% |

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