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ACCOUNTING ESTIMATES AND JUDGMENTS (Details) - Schedule for intangible assets with an indefinite useful life assigned to CGU - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Goodwill [member] | Air Transport CGU [Member] |  |
ACCOUNTING ESTIMATES AND JUDGMENTS (Details) - Schedule for intangible assets with an indefinite useful life assigned to CGU [Line Items] |  |
Intangible assets with indefinite useful life | $ 2,209,576 | $ 1,845,136
Goodwill [member] | Coalition and Loyalty Program Multiplus CGU [Member] |  |
ACCOUNTING ESTIMATES AND JUDGMENTS (Details) - Schedule for intangible assets with an indefinite useful life assigned to CGU [Line Items] |  |
Intangible assets with indefinite useful life |  | 448,936
Airports Slots [Member] | Air Transport CGU [Member] |  |
ACCOUNTING ESTIMATES AND JUDGMENTS (Details) - Schedule for intangible assets with an indefinite useful life assigned to CGU [Line Items] |  |
Intangible assets with indefinite useful life | 845,959 | 828,969
Airports Slots [Member] | Coalition and Loyalty Program Multiplus CGU [Member] |  |
ACCOUNTING ESTIMATES AND JUDGMENTS (Details) - Schedule for intangible assets with an indefinite useful life assigned to CGU [Line Items] |  |
Intangible assets with indefinite useful life |  |
Loyalty Program [Member] | Air Transport CGU [Member] |  |
ACCOUNTING ESTIMATES AND JUDGMENTS (Details) - Schedule for intangible assets with an indefinite useful life assigned to CGU [Line Items] |  |
Intangible assets with indefinite useful life | 263,806 |
Loyalty Program [Member] | Coalition and Loyalty Program Multiplus CGU [Member] |  |
ACCOUNTING ESTIMATES AND JUDGMENTS (Details) - Schedule for intangible assets with an indefinite useful life assigned to CGU [Line Items] |  |
Intangible assets with indefinite useful life |  | $ 274,420

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