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Expenses by Nature - Detailed Information about Expenses by Nature (Parenthetical) (Detail) - ARS ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Expenses by nature [abstract] |  |  |  |
Export withholdings | $ 6,541.0 | $ 2,297.0 | $ 1,612.0 |
Fees and remunerations of the Directors and Statutory Auditors of YPF | 80.0 | 65.0 | 48.8 |
Fees approved by General and Extraordinay Shareholders' Meeting of YPF | 87.0 | 48.8 | 48.3 | $ 127.0
Research and development expense | 1,261.0 | $ 700.0 | $ 449.0 |
Expense relating to short term lease | 7,223.0 |  |  |
Expense relating to lease underlying asset | $ 3,326.0 |  |  |

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- References No definition available. + Details
Name: | ifrs-full_ExpenseByNatureAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of expenditure directly attributable to research or development activities, recognised in profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2019-01-01 -Paragraph 126 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2019-en-r&anchor=para_126&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_ResearchAndDevelopmentExpense
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Directors and auditors remuneration expense. + References No definition available. + Details
Name: | ypf_DirectorsAndAuditorsRemunerationExpense
Namespace Prefix: | ypf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Expense relating to lease underlying asset. + References No definition available. + Details
Name: | ypf_ExpenseRelatingToLeaseUnderlyingAsset
Namespace Prefix: | ypf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Expense relating to short term lease. + References No definition available. + Details
Name: | ypf_ExpenseRelatingToShortTermLease
Namespace Prefix: | ypf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Export withholdings. + References No definition available. + Details
Name: | ypf_ExportWithholdings
Namespace Prefix: | ypf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Fees and remuneration expense. + References No definition available. + Details
Name: | ypf_FeesAndRemunerationExpense
Namespace Prefix: | ypf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration