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Income taxes (Details 3) - CLP ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Taxes [Abstract] |  |  |
Income as per deferred tax related to the origin and reversal of temporary differences | $ 9,930,675 | $ (500,800) | $ (878,629)
Prior year adjustments | 484,985 | 569,212 | 3,838,136
Effect of change in tax rates | 23,903 | (50,071) | (856,612)
Tax benefits (loss) | (1,795,446) | 611,282 | (765,292)
Total deferred tax expense | 8,644,117 | 629,623 | 1,337,603
Current tax expense | (144,929,220) | (47,841,130) | (31,285,976)
Prior period adjustments | 158,286 | (1,154,469) | (298,010)
Total expenses (income) for current taxes | (144,770,934) | (48,995,599) | (31,583,986)
(Loss) Income from income tax | $ (136,126,817) | $ (48,365,976) | $ (30,246,383)

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