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TRADE AND OTHER RECEIVABLES - Additional Information (Details)
12 Months Ended
Dec. 31, 2018
client
TRADE AND OTHER RECEIVABLES  
Number of clients having balances in different sections of stratification 268,000
Chile  
TRADE AND OTHER RECEIVABLES  
Number of clients having balances in different sections of stratification 67,000
Brazil  
TRADE AND OTHER RECEIVABLES  
Number of clients having balances in different sections of stratification 86,000
Argentina  
TRADE AND OTHER RECEIVABLES  
Number of clients having balances in different sections of stratification 55,000
Paraguay  
TRADE AND OTHER RECEIVABLES  
Number of clients having balances in different sections of stratification 57,000