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OTHER EXPENSES (Details) - CLP ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
OTHER EXPENSES      
Contingencies and Non-operating fees $ 5,377,190 $ 9,959,181 $ 8,866,661
Tax on bank debits 7,669,234 7,006,261 8,219,046
Disposal and write-off of property, plant and equipment 3,025,497 4,800,278 3,979,594
Donations flood repairs northern Chile     214,856
Others 629,550 999,447 702,891
Total other expenses $ 16,701,471 $ 22,765,167 $ 21,983,048