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Property Plant and Equipment - Summary of Changes in Property Plant and Equipment (Parenthetical) (Detail)
$ in Millions
 12 Months Ended
Dec. 31, 2017
ARS ($)
Well
Property
Dec. 31, 2016
ARS ($)
Property
Dec. 31, 2015
ARS ($)
Property
Subsidiaries
Dec. 31, 2014
ARS ($)
Disclosure of detailed information about property, plant and equipment [line items]        
Exploratory wells in progress | Well 35      
Drilled wells | Well 37      
Charged to exploratory expense | Well 24      
Transferred to proved properties | Property 15      
Property, plant and equipment provisions $ 7 $ 2 $ 6  
Reduction for deconsolidation of subsidiaries | Subsidiaries     500  
Property, plant and equipment $ 354,443 $ 308,014 $ 270,905  
El Orejano [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Decreases and reclassifications     (2,671)  
Magallanes area [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Decreases and reclassifications     (226)  
Puesto Cortadera [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Decreases and reclassifications     $ (8)  
Mineral Property, Wells and Related Equipment [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Mineral property | Property 10,003 9,147 8,435  
Hydrocarbon Wells Abandonmnet Cost [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Increase decrease Property, plant and equipment $ (4,913) $ 2,243 $ (1,281)  
Hydrocarbon Wells Abandonmnet Cost [member] | Magallanes area [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Increase decrease Property, plant and equipment   (8) (226)  
Hydrocarbon Wells Abandonmnet Cost [member] | Puesto Cortadera [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Increase decrease Property, plant and equipment     (8)  
YPF EE [member] | At cost [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Property, plant and equipment 6,722      
Accumulated Depreciation and Amortization [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Property, plant and equipment 679,425 522,732 394,076 $ 235,156
Accumulated Depreciation and Amortization [Member] | Mineral Property, Wells and Related Equipment [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Property, plant and equipment 566,334 $ 432,002 $ 324,922 $ 192,170
Accumulated Depreciation and Amortization [Member] | YPF EE [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Property, plant and equipment $ 1,790