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Property, plant and equipment (Details 2) - CLP ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Depreciation expense $ 90,200,510 $ 89,224,517
Recognized in net incomes [Member]    
Depreciation expense 87,471,320 86,557,532
Recognized in others assets [Member]    
Depreciation expense $ 2,729,190 $ 2,666,985