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Employee Benefit Plans and Similar Obligations - Summary of Share Based Compensation Plan (Plan 2017-2020) (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2020
Plan 2017-2020 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Average remaining life of plan	7 months

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Share Based Benefit Plan Average Remaining Life

+ References

No definition available.

+ Details

Name:	ypf_ShareBasedBenefitPlanAverageRemainingLife
Namespace Prefix:	ypf_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=ypf_ShareBasedBenefitPlanTwoThousandAndSeventeenToTwentyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: