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Income Tax - Summary of deferred tax assets and deferred tax liabilities (Detail) - ARS ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
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Deferred Tax Assets And Liabilities [line items] |  |  |
Deferred Tax Assets | $ 3,044,491 | $ 9,412,722 |
Deferred Tax Liabilities | 10,429,424 | 10,116,786 |
Net deferred tax liabilities | 7,384,933 | 704,064 | $ 4,903,673
Inflation adjustment on deferred income tax [member] |  |  |
Deferred Tax Assets And Liabilities [line items] |  |  |
Deferred Tax Assets | 112,133 | 7,404,561 |
Allowances for contingencies [member] |  |  |
Deferred Tax Assets And Liabilities [line items] |  |  |
Deferred Tax Assets | 365,174 | 594,761 |
Provisions and employee benefit [member] |  |  |
Deferred Tax Assets And Liabilities [line items] |  |  |
Deferred Tax Assets | 591,113 | 529,485 |
Lease [member] |  |  |
Deferred Tax Assets And Liabilities [line items] |  |  |
Deferred Tax Assets | 106,147 | 82,349 |
Loans and other financing [member] |  |  |
Deferred Tax Assets And Liabilities [line items] |  |  |
Deferred Tax Assets | 1,708,157 | 393,633 |
Other [member] |  |  |
Deferred Tax Assets And Liabilities [line items] |  |  |
Deferred Tax Assets | 161,767 | 407,933 |
Property, plant and equipment [member] |  |  |
Deferred Tax Assets And Liabilities [line items] |  |  |
Deferred Tax Liabilities | 6,851,232 | 7,104,570 |
Intangible asset [member] |  |  |
Deferred Tax Assets And Liabilities [line items] |  |  |
Deferred Tax Liabilities | 1,377,624 | 1,320,956 |
Investments in other companies [member] |  |  |
Deferred Tax Assets And Liabilities [line items] |  |  |
Deferred Tax Liabilities | 1,283,901 | 889,262 |
Profit or loss for forward sale [member] |  |  |
Deferred Tax Assets And Liabilities [line items] |  |  |
Deferred Tax Liabilities | 511,718 | 317,513 |
Other [member] |  |  |
Deferred Tax Assets And Liabilities [line items] |  |  |
Deferred Tax Liabilities | $ 404,949 | $ 484,485 |

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- Definition The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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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- 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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- Definition The amount of deferred tax liabilities net of deferred tax assets, when the absolute amount of deferred tax liabilities is greater than the absolute amount of deferred tax assets. [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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