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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
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