XML 259 R188.htm IDEA: XBRL DOCUMENT
v3.19.1

Guarantees, commitments and risks (Details 9) € in Millions | Dec. 31, 2018 EUR (€)
--- | ---
Disclosure Of Contingent Liabilities Explanatory [Line Items] |
Committed projects | € 20,406
Not later than one year [member] |
Disclosure Of Contingent Liabilities Explanatory [Line Items] |
Committed projects | 6,492
Later than one year and not later than two years [member] |
Disclosure Of Contingent Liabilities Explanatory [Line Items] |
Committed projects | 4,917
Later than two years and not later than three years [member] |
Disclosure Of Contingent Liabilities Explanatory [Line Items] |
Committed projects | 3,458
Later than three years and not later than four years [member] |
Disclosure Of Contingent Liabilities Explanatory [Line Items] |
Committed projects | 1,910
Later Than Four Years And Thereafter [Member] |
Disclosure Of Contingent Liabilities Explanatory [Line Items] |
Committed projects | € 3,629

X
- Definition The amount of committed projects. + References No definition available. + Details
Name: | e_CommittedProjects
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=e_LaterThanFourYearsAndThereafterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |