XML 8 R1.htm IDEA: XBRL DOCUMENT v3.8.0.1
Document and Entity Information
 12 Months Ended
Dec. 31, 2017
shares
Document And Entity Information  
Entity Registrant Name ENI SPA
Entity Central Index Key 0001002242
Document Type 20-F
Document Period End Date Dec. 31, 2017
Amendment Flag false
Current Fiscal Year End Date --12-31
Is Entity a Well-known Seasoned Issuer? Yes
Is Entity a Voluntary Filer? No
Is Entity's Reporting Status Current? Yes
Entity Filer Category Large Accelerated Filer
Entity Common Stock, Shares Outstanding 3,634,185,330
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2017
Trading Symbol E