Income taxes (Details 3) - CLP ($) $ in Thousands	12 Months Ended
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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Adjustments of tax expense (income) recognised in the period for current tax of prior periods.

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Adjustments of tax expense (income) recognised in the period for the deferred tax of prior periods.

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The amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period.

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The amount of current tax expense (income) and adjustments for the current tax of prior periods. [Refer: Current tax expense (income); Adjustments for current tax of prior periods]

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The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]

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The amount of deferred tax expense or income relating to the creation or reversal of temporary differences. [Refer: Temporary differences [member]; Deferred tax expense (income)]

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The amount of deferred tax expense or income relating to tax rate changes or the imposition of new taxes. [Refer: Deferred tax expense (income)]

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The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)]

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The amount of benefit arising from a previously unrecognised tax loss, tax credit or temporary difference of a prior period that is used to reduce deferred tax expense. [Refer: Deferred tax expense (income); Temporary differences [member]; Unused tax losses [member]; Unused tax credits [member]]

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