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Provisions - Summary of Changes in Group's Provisions (Detail) - ARS ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Non current [member] |  |  |
Disclosure of provisions [line items] |  |  |
Provisions beginning balance | $ 144,768 | $ 83,388 | $ 54,734
Increases charged to expenses | 23,462 | 27,564 | 10,126
Decreases charged to income | (11,804) | (5,371) | (14,621)
Amounts incurred due to payments/utilization | (43) | (73) | (76)
Net exchange and translation differences | 51,185 | 43,103 | 50,995
Increases due to business combination |  |  | 465
Result from net monetary position | (35) | (92) | (204)
Reclassifications and other movements | (21,045) | (3,751) | (18,031)
Provisions ending balance | 186,488 | 144,768 | 83,388
Non current [member] | Provision for lawsuits and contingencies [member] |  |  |
Disclosure of provisions [line items] |  |  |
Provisions beginning balance | 43,833 | 21,235 | 11,667
Increases charged to expenses | 8,917 | 18,460 | 3,320
Decreases charged to income | (6,331) | (2,358) | (371)
Amounts incurred due to payments/utilization | (43) | (73) | (76)
Net exchange and translation differences | 9,475 | 7,405 | 6,826
Result from net monetary position | (35) | (92) | (204)
Reclassifications and other movements | (5,447) | (744) | 73
Provisions ending balance | 50,369 | 43,833 | 21,235
Non current [member] | Provision for environmental liabilities [member] |  |  |
Disclosure of provisions [line items] |  |  |
Provisions beginning balance | 3,828 | 3,720 | 1,196
Increases charged to expenses | 3,428 | 1,695 | 3,021
Decreases charged to income | (224) | (63) |
Net exchange and translation differences | 525 | 479 | 495
Increases due to business combination |  |  | 465
Reclassifications and other movements | (2,026) | (2,003) | (1,457)
Provisions ending balance | 5,531 | 3,828 | 3,720
Non current [member] | Provision for Hydrocarbon Wells Abandonment Obligations [member] |  |  |
Disclosure of provisions [line items] |  |  |
Provisions beginning balance | 97,107 | 58,433 | 41,871
Increases charged to expenses | 11,117 | 7,409 | 3,785
Decreases charged to income | (5,249) | (2,950) | (14,250)
Net exchange and translation differences | 41,185 | 35,219 | 43,674
Reclassifications and other movements | (13,572) | (1,004) | (16,647)
Provisions ending balance | 130,588 | 97,107 | 58,433
Current [member] |  |  |
Disclosure of provisions [line items] |  |  |
Provisions beginning balance | 5,460 | 4,529 | 2,442
Increases charged to expenses | 219 | 9 | 357
Decreases charged to income | (1,039) | (744) | (266)
Amounts incurred due to payments/utilization | (2,760) | (4,789) | (2,576)
Net exchange and translation differences | 1,470 | 1,628 | 1,309
Result from net monetary position |  |  | 66
Reclassifications and other movements | 2,783 | 4,827 | 3,197
Provisions ending balance | 6,133 | 5,460 | 4,529
Current [member] | Provision for lawsuits and contingencies [member] |  |  |
Disclosure of provisions [line items] |  |  |
Provisions beginning balance | 1,285 | 1,123 | 688
Increases charged to expenses | 219 | 9 | 357
Decreases charged to income | (1,039) | (744) | (266)
Amounts incurred due to payments/utilization | (132) | (194) | (129)
Net exchange and translation differences | 498 | 443 | 471
Result from net monetary position |  |  | 66
Reclassifications and other movements | 1,103 | 648 | (64)
Provisions ending balance | 1,934 | 1,285 | 1,123
Current [member] | Provision for environmental liabilities [member] |  |  |
Disclosure of provisions [line items] |  |  |
Provisions beginning balance | 1,910 | 1,622 | 1,018
Amounts incurred due to payments/utilization | (1,330) | (1,821) | (933)
Net exchange and translation differences | 12 | 106 | 80
Reclassifications and other movements | 2,026 | 2,003 | 1,457
Provisions ending balance | 2,618 | 1,910 | 1,622
Current [member] | Provision for Hydrocarbon Wells Abandonment Obligations [member] |  |  |
Disclosure of provisions [line items] |  |  |
Provisions beginning balance | 2,265 | 1,784 | 736
Amounts incurred due to payments/utilization | (1,298) | (2,774) | (1,514)
Net exchange and translation differences | 960 | 1,079 | 758
Reclassifications and other movements | (346) | 2,176 | 1,804
Provisions ending balance | $ 1,581 | $ 2,265 | $ 1,784

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- Definition The increase in other provisions resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in other provisions resulting from transfers and changes that the entity does not separately disclose in the same statement or note. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of liabilities of uncertain timing or amount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_l&doctype=Standard -URIDate 2020-01-01 + Details
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