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Income taxes (Details) - CLP ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
IncomeTaxes [Line Items] |  |  |
Current tax assets, current |  | $ 15,132,290 | $ 17,302,429
Refundable tax previous year |  |  |
IncomeTaxes [Line Items] |  |  |
Current tax assets, current |  | 5,484,216 | 11,884,421
Taxes under claim [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Current tax assets, current | [1] | 0 | 968,195
Argentinean tax credits [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Current tax assets, current |  | 1,140,073 | 440,172
Monthly provisions [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Current tax assets, current |  | 8,136,478 | 3,686,905
Payment of absorbed profit provision [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Current tax assets, current |  | 4,830 | 0
Other credits [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Current tax assets, current |  | $ 366,693 | $ 322,736
[1] | This item includes claims for refund of first category taxes (Provisional payment of absorbed profit) for an amount of ThCh$ 968,195 as of December 31, 2018, that was presented in April 2014 from the commercial year 2013, which was recovered the second quarter of 2019.

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- Definition The current amount of current tax assets. [Refer: Current tax assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph n -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_n&doctype=Standard -URIDate 2019-03-27 + Details
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