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Property, plant and equipment (Details 2) - CLP ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Property, plant and equipment $ 917,913,428 $ 904,104,722 $ 872,667,210
Land      
Property, plant and equipment 3,215,075 3,130,181  
Machinery and equipment      
Property, plant and equipment $ 76,732 $ 228,081