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Income taxes (Details 1) - CLP ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
IncomeTaxes [Line Items]    
Current tax assets, non-current $ 3,236 $ 2,305,129
Others [Member]    
IncomeTaxes [Line Items]    
Current tax assets, non-current [1] $ 3,236 $ 2,305,129
[1] Corresponds to the minimum presumed income tax of Argentine subsidiaries, whose recovery period is estimated to be more than one year.