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Investments in Associates and Joint Ventures - Additional Information (Detail)
12 Months Ended
Dec. 31, 2017
Y-GEN I and Y-GEN II - Investment in Associates and Joint Ventures [Line Items]  
Description of contract maturity term for sale of offered energy Between 5 and 10 years
YPF EE [member]  
Y-GEN I and Y-GEN II - Investment in Associates and Joint Ventures [Line Items]  
Percentage of shareholding owned 66.67%
Guayama PR Holdings of the General Electric Group [member]  
Y-GEN I and Y-GEN II - Investment in Associates and Joint Ventures [Line Items]  
Percentage of shareholding owned 33.33%