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DERIVATIVE ASSETS AND LIABILITIES (Details)
$ in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2018
CLP ($)
Dec. 31, 2017
CLP ($)
Dec. 31, 2016
CLP ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
DERIVATIVE ASSETS AND LIABILITIES          
Gain (losses) from cash flow hedges $ (13,151,841) $ (813,844) $ (42,836,575)    
Derivative Instrument US Bond Obligations | Currency swap contract | Cash flow hedges          
DERIVATIVE ASSETS AND LIABILITIES          
Hedged item, liabilities       $ 360.0  
Derivative financial assets held for hedging 87,446,662        
Gains on hedging instrument in other equity reserves 14,089,111        
Gain (losses) from cash flow hedges 25,302,080        
Gains (losses) on ineffectiveness of cash flow hedges recognised in profit or loss (207,802)        
Derivative Instrument Raw Material Purchases | Forward contract | Fair value hedges          
DERIVATIVE ASSETS AND LIABILITIES          
Derivative financial assets held for hedging 669,527        
Gain (losses) from cash flow hedges 7,583,354        
Notional amount       $ 56.8 $ 62.8
Derivative financial liabilities held for hedging 130,829        
Accumulated gain loss on derivative financial instruments $ 397,151