XML 118 R47.htm IDEA: XBRL DOCUMENT
v3.19.1

Significant non-recurring events and operations | 12 Months Ended
--- | ---
Dec. 31, 2018
Notes To Financial Statements [Abstract] |
Disclosure Of Significant Nonrecurring Events And Operations [Text Block] | 39 Significant non-recurring events and operations In 2018, in 2017 and 2016, Eni did not report any non-recurring events and operations.

X
- Definition The disclosure of non-recurring events and operations. + References No definition available. + Details
Name: | e_DisclosureOfSignificantNonrecurringEventsAndOperationsTextBlock
Namespace Prefix: | e_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | e_NotesToFinancialStatementsAbstract
Namespace Prefix: | e_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration