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ACCOUNTING ESTIMATES AND JUDGMENTS (Tables)
 12 Months Ended
Dec. 31, 2019
Disclosure of accounting judgements and estimates [text block] [Abstract]  
Disclosure of information for cash-generating units [text block]
   Air Transport
CGU		   Coalition and loyalty
Program Multiplus CGU		 
   As of   As of   As of   As of 
   December 31,   December 31,   December 31,   December 31, 
   2019   2018   2019   2018 
   ThUS$   ThUS$   ThUS$   ThUS$ 
                 
Goodwill   2,209,576    1,845,136        -    448,936 
Airport Slots   845,959    828,969    -    - 
Loyalty program   263,806    -    -    274,420