XML 181 R174.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Long-term debt and current portion of long-term debt (Details 4) - EUR (€) € in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |
Borrowings | € 24,707 | € 27,239
Long-term debt and current portion of long-term debt [Member] |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |
Borrowings | 22,465 | 23,843
Euro [Member] |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |
Borrowings | € 20,094 | € 21,545
Borrowings, interest rate | 2.40% | 2.70%
United States of America, Dollars [Member] |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |
Borrowings | € 1,694 | € 1,587
Borrowings, interest rate | 4.80% | 5.20%
British Pound [Member] |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |
Borrowings | € 521 | € 540
Borrowings, interest rate | 5.30% | 5.30%
Japan, Yen [Member] |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |
Borrowings | € 156 | € 171
Borrowings, interest rate | 2.60% | 2.60%

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

X
- Definition The amount of outstanding funds that the entity is obligated to repay. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_Borrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_7&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_BorrowingsInterestRate
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=E_LongTermDebtAndCurrentPortionOfLongTermDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | E_CurrenciesAxis=E_EuroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | E_CurrenciesAxis=E_UnitedStatesofAmericaDollarsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | E_CurrenciesAxis=E_BritishpoundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | E_CurrenciesAxis=E_JapanYenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |