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Acquisitions and Dispositions - Summary of Capital Structure After Issuance of Shares (Detail) - shares
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of classes of share capital [line items]      
Number of Shares 538,252 502,996 520,031
YPF EE [member]      
Disclosure of classes of share capital [line items]      
Number of Shares 3,747,070,355    
Interest holding in the capital stock 100.00%    
YPF EE [member] | YPF [member]      
Disclosure of classes of share capital [line items]      
Number of Shares 2,723,826,879    
Interest holding in the capital stock 72.69218%    
Kind of Share A    
YPF EE [member] | OPESSA [member]      
Disclosure of classes of share capital [line items]      
Number of Shares 86,476,112    
Interest holding in the capital stock 2.30783%    
Kind of Share A    
YPF EE [member] | Group [member]      
Disclosure of classes of share capital [line items]      
Number of Shares 2,810,302,991    
Interest holding in the capital stock 75.00001%    
Kind of Share A    
YPF EE [member] | GEFS Global Energy B V [member]      
Disclosure of classes of share capital [line items]      
Number of Shares 936,767,364    
Interest holding in the capital stock 24.99999%    
Kind of Share B