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32 Income tax and deferred tax (Details 1) - ARS ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Summary of income tax deferred tax [line items] |  |  |  |
Deferred tax asset | $ 3,444 | $ 2,815 | $ 6,105 |
Deferred tax liability | (27,153) | (30,115) | (22,952) |
Net deferred tax liability | (23,709) | (27,300) | (16,847) | $ (15,260)
To be recovered in more than 12 months [member] |  |  |  |
Summary of income tax deferred tax [line items] |  |  |  |
Deferred tax asset | 3,444 | 2,815 | 6,105 |
Deferred tax liability | $ (27,153) | $ (30,115) | $ (22,952) |

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- Definition The amount of deferred tax assets net of deferred tax liabilities, when the absolute amount of deferred tax assets is greater than the absolute amount of deferred tax liabilities. [Refer: Deferred tax assets; Deferred tax liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_g_i&doctype=Standard -URIDate 2020-01-01 + Details
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