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Income taxes (Details 1) - CLP ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
IncomeTaxes [Line Items] |  |
Current tax liabilities, current | $ 22,526,634 | $ 11,806,434
Chilean income taxes | Chile [Member] |  |
IncomeTaxes [Line Items] |  |
Current tax liabilities, current | 18,335,047 | 7,033,363
Monthly provisional payments |  |
IncomeTaxes [Line Items] |  |
Current tax liabilities, current | 3,970,511 | 4,365,187
Tax article 21 |  |
IncomeTaxes [Line Items] |  |
Current tax liabilities, current | 105,903 | 68,824
Estimated Argentinean minimum gain subsidiaries taxes | Argentina [Member] |  |
IncomeTaxes [Line Items] |  |
Current tax liabilities, current | 0 | 339,060
Others |  |
IncomeTaxes [Line Items] |  |
Current tax liabilities, current | $ 115,173 | $ 0

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