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Supplemental Information on Oil And Gas Producing Activities (Unaudited) - Summary of Changes in YPF's Net Proved Reserves (Parenthetical) (Detail) | 12 Months Ended
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Dec. 31, 2017 Bbls MMBbls Bcf | Dec. 31, 2016 MMBbls Bcf | Dec. 31, 2015 MMBbls Bcf
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Estimated crude oil production | MMBbls | 12 | 13 | 13
Estimated natural gas liquids production | MMBbls | 2 | 2 | 2
Estimated natural gas production | 64 | 60 | 58
Estimated Proved oil equivalent reserves | 119 | 144 | 176
Oil equivalent [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Natural gas converted to barrel of oil equivalent | Bbls | 5,615 |  |
Consolidated entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Estimated proved crude oil reserves | MMBbls | 61 | 76 | 88
Estimated proved natural gas liquids reserves | MMBbls | 6 | 8 | 14
Estimated proved natural gas reserves | 289 | 337 | 329
Estimated barrel of oil equivalent production | 25 | 27 | 26
Consolidated and equity-accounted entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Estimated proved natural gas reserves | 364 | 467 | 635

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