XML 35 R1.htm IDEA: XBRL DOCUMENT v3.8.0.1
Document and Entity Information
 12 Months Ended
Dec. 31, 2017
shares
Document Information [Line Items]  
Document Type 20-F
Amendment Flag false
Document Period End Date Dec. 31, 2017
Document Fiscal Year Focus 2017
Document Fiscal Period Focus FY
Trading Symbol YPF
Entity Registrant Name YPF SOCIEDAD ANONIMA
Entity Central Index Key 0000904851
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer Yes
Entity Current Reporting Status Yes
Entity Filer Category Large Accelerated Filer
Entity Common Stock, Shares Outstanding 393,312,793
Class A Shares [member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 3,764
Class B Shares [Member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 7,624
Class C shares [Member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 40,422
Class D Shares [Member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 393,260,983