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OTHER INCOME (Details) - CLP ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
OTHER INCOME      
Gain on disposal of Property, plant and equipment $ 16,005 $ 265,514 $ 1,984,547
Recovery AFIP claim     232,617
Recover PIS and COFINS credits (1) 6,744,341 40,281,550  
Others 1,595,952 400,094 392,004
Total $ 8,356,298 $ 40,947,158 $ 2,609,168