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FINANCIAL RISK MANAGEMENT (Details) - Schedule of sensitivity analysis - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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TAM S.A [Member] | Bottom of range [member] |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of sensitivity analysis [Line Items] |  |
Appreciation (depreciation) of R$ /US$ |  | (10.00%)
Positions effect on equity | $ 9,500 | $ 39,800
TAM S.A [Member] | Top of range [member] |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of sensitivity analysis [Line Items] |  |
Appreciation (depreciation) of R$ /US$ |  | 10.00%
Positions effect on equity | (9,500) | $ (39,800)
TAM S.A. and Subsidiaries [Member] | Bottom of range [member] |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of sensitivity analysis [Line Items] |  |
Appreciation (depreciation) of R$ /US$ |  | (10.00%)
Positions effect on equity | 402,480 | $ 384,730
TAM S.A. and Subsidiaries [Member] | Top of range [member] |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of sensitivity analysis [Line Items] |  |
Appreciation (depreciation) of R$ /US$ |  | 10.00%
Positions effect on equity | (329,290) | $ (314,780)
Foreign Exchange Rate Risk [Member] | Bottom of range [member] |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of sensitivity analysis [Line Items] |  |
Appreciation (depreciation) of R$ /US$ |  | (10.00%)
Positions effect on equity | (600) |
Foreign Exchange Rate Risk [Member] | Top of range [member] |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of sensitivity analysis [Line Items] |  |
Appreciation (depreciation) of R$ /US$ |  | 10.00%
Positions effect on equity | $ 1,100 |

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