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ACCOUNTING ESTIMATES AND JUDGMENTS (Details Narrative) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jan. 04, 2018 | Jan. 02, 2018 | Dec. 31, 2015
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |  |
Goodwill | $ 2,294,072 | $ 2,672,550 | $ 2,710,382 | $ 2,294,072 |  | $ 2,280,575
Deferred tax assets | 273,327 | 364,021 |  | $ 273,327 | $ 370,115 |
Recognize deferred tax assets for tax losses | 5,707 | (45,991) | (73,814) |  |  |
Deferred revenue | $ 1,299,304 | 1,550,447 |  |  |  |
Description of change in ticket usage | A hypothetical change of one percentage point in passenger behavior with respect to use would result in an impact of up to ThUS $ 6,000 per month. |  |  |  |  |
Impact of fair value of unused kilometers | $ 13,140 | 11,187 |  |  |  |
Air Transport CGU [Member] |  |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |  |
Goodwill | 1,845,136 | 2,146,692 | 2,176,634 |  |  | 1,835,088
Coalition and Loyalty Program Multiplus CGU [Member] |  |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |  |
Goodwill | 448,936 | 525,858 | $ 533,748 |  |  | $ 445,487
Airport Slots [Member] | Air Transport CGU [Member] |  |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |  |
Goodwill | 1,845,136 | 2,146,692 |  |  |  |
Intangible assets with indefinite useful life | 828,969 | 964,513 |  |  |  |
Airport Slots [Member] | Coalition and Loyalty Program Multiplus CGU [Member] |  |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |  |
Intangible assets with indefinite useful life |  |  |  |  |  |
LATAM Fidelidade and Multiplus Loyalty Program [Member] |  |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |  |
Deferred revenue | 293,831 | 364,866 |  |  |  |
Probable change in deferred revenue | 13,140 | 11,187 |  |  |  |
Loyalty Program [Member] | Air Transport CGU [Member] |  |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |  |
Intangible assets with indefinite useful life |  |  |  |  |  |
Loyalty Program [Member] | Coalition and Loyalty Program Multiplus CGU [Member] |  |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |  |
Goodwill | 448,936 | 525,858 |  |  |  |
Intangible assets with indefinite useful life | 274,420 | 321,440 |  |  |  |
LATAM Pass Loyalty Program [Member] |  |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |  |
Deferred revenue | 1,324,635 | 853,505 |  |  |  |
Probable change in deferred revenue | $ 26,726 | $ 25,000 |  |  |  |
Trade Marks [Member] |  |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |  |
Estimated useful life of brands from indefinite useful life | 5 years |  |  |  |  |

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