Income Tax - Summary of Calculation of Income Tax Expense Accrued (Detail) - ARS ($) $ in Millions	12 Months Ended
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)

The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]

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

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration