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Income taxes (Details 6) - CLP ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
IncomeTaxes [Line Items] |  |  |
Deferred tax assets | $ 54,528,648 | $ 37,691,088 |
Deferred Tax Liabilities, Net | 131,582,558 | 108,500,171 |
Deferred tax liability (asset) | (77,053,910) | (70,809,083) | $ (53,998,782)
Accounts receivable impairment provision [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred tax assets | 1,216,921 | 1,406,961 |
Other non-tax expenses [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred tax assets | 7,984,991 | 8,825,378 |
Benefits to staff [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred tax assets | 3,785,361 | 3,468,874 |
Inventory impairment provision [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred tax assets | 283,440 | 352,183 |
Severance indemnity [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred tax assets | 8,649,423 | 6,829,816 |
Inventory valuation [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred tax assets | 2,311,192 | 2,143,768 |
Intangibles [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred tax assets | 294,209 | 241,802 |
Deferred Tax Liabilities, Net | 17,505,666 | 16,614,440 |
Other Assets [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred tax assets | 22,334,415 | 14,883,181 |
Unused tax losses [member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred tax assets | 14,888,509 | 3,782,552 |
Property, plant and equipment depreciation [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred Tax Liabilities, Net | 74,003,316 | 51,471,109 |
Agricultural operation expenses [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred Tax Liabilities, Net | 6,123,595 | 7,150,018 |
Manufacturing indirect activation costs [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred Tax Liabilities, Net | 5,786,780 | 5,743,496 |
Land [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred Tax Liabilities, Net | 25,775,281 | 25,408,185 |
Other liabilitiess [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred Tax Liabilities, Net | 9,607,733 | 6,356,350 |
Subtotal By Deferred Tax Assets [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred tax assets | 61,748,461 | 41,934,515 |
Deferred Tax Liabilities Offset [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred tax assets | (7,219,813) | (4,243,427) |
Subtotal By Deferred Tax Liabilities [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred Tax Liabilities, Net | 138,802,371 | 112,743,598 |
Deferred tax assets offset [Member] |  |  |
IncomeTaxes [Line Items] |  |  |
Deferred Tax Liabilities, Net | $ (7,219,813) | $ (4,243,427) |

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