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Income taxes (Details 1) - CLP ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
IncomeTaxes [Line Items]    
Current tax assets, non-current $ 2,305,129 $ 1,270,941
Taxes under claim [Member]    
IncomeTaxes [Line Items]    
Current tax assets, non-current [1] 0 1,173,281
Others [Member]    
IncomeTaxes [Line Items]    
Current tax assets, non-current [2] $ 2,305,129 $ 97,660
[1] This item includes claims for refund of first category taxes (Provisional payment of absorbed profit) that was presented in April 2010 from the commercial year 2009.
[2] Corresponds to the minimum presumed income tax of Argentine subsidiaries, whose recovery period is estimated to be more than one year.