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CASH AND CASH EQUIVALENTS (Tables)
12 Months Ended
Dec. 31, 2020
Disclosure of cash and cash equivalents [text block] [Abstract]  
Schedule of cash and cash equivalents
   As of   As of 
   December 31,   December 31, 
   2020   2019 
   ThUS$   ThUS$ 
Cash on hand   4,277    4,982 
Bank balances   732,578    329,632 
Overnight   802,220    350,080 
Total Cash   1,539,075    684,694 
Cash equivalents          
Time deposits   123,984    165,791 
Mutual funds   32,782    222,094 
Total cash equivalents   156,766    387,885 
           
Total cash and cash equivalents   1,695,841    1,072,579 
Schedule of cash and cash equivalents denominated by currencies
   As of   As of 
   December 31,   December 31, 
Currency  2020   2019 
   ThUS$   ThUS$ 
Argentine peso   20,107    16,579 
Brazilian real   136,938    197,354 
Chilean peso   32,649    50,521 
Colombian peso   17,185    48,191 
Euro   10,361    21,927 
US Dollar   1,438,846    667,785 
Other currencies   39,755    70,222 
Total   1,695,841    1,072,579