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Income Tax - Summary of Calculation of Income Tax Expense Accrued (Detail) - ARS ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Calculation of the Income Tax Expense Accrued [Abstract] |  |  |
Current income tax | $ (1,247) | $ (1,938) | $ (943)
Deferred income tax | (19,752) | (3,588) | (50,595)
Income tax expense | (20,999) | (5,526) | (51,538)
Income tax – Well abandonment | 6,410 | (16,239) |
Special tax – Tax revaluation |  | (4,604) |
Income tax (expense)/ benefit | $ (14,589) | $ (26,369) | $ (51,538)

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- Definition The amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 80 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_80_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph g -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_g_ii&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Calculation of the income tax expense accrued. + References No definition available. + Details
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- Definition Tax expense income relating to revaluation of special tax. + References No definition available. + Details
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- Definition Tax expense income relating to well abandonment. + References No definition available. + Details
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