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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, 2018
Bbls
MMBbls
Bcf
Dec. 31, 2017
MMBbls
Bcf
Dec. 31, 2016
MMBbls
Bcf
Disclosure of information about consolidated structured entities [Line Items]      
Estimated crude oil production | MMBbls 12 12 13
Estimated natural gas liquids production | MMBbls 2 2 2
Estimated natural gas production 61 64 60
Estimated Proved oil equivalent reserves 143 119 144
Consolidated entities [Member]      
Disclosure of information about consolidated structured entities [Line Items]      
Estimated proved crude oil reserves | MMBbls 83 61 76
Estimated proved natural gas liquids reserves | MMBbls 8 6 8
Estimated proved natural gas reserves 288 289 337
Estimated barrel of oil equivalent production 24 25 27
Consolidated and equity-accounted entities [Member]      
Disclosure of information about consolidated structured entities [Line Items]      
Estimated proved natural gas reserves 349 364 467
Oil equivalent [Member]      
Disclosure of information about consolidated structured entities [Line Items]      
Natural gas converted to barrel of oil equivalent | Bbls 5,615