XML 185 R178.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Long-term debt and current portion of long-term debt (Details Textual) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |  |  |
Repayments of non-current borrowings |  | € 2,973 | € 2,323 | € 4,466
Undrawn borrowing facilities |  | 5,802 | 6,236 |
Outstanding Retained undrawn long-term committed borrowing |  | 750 |  |
Current financial assets at fair value through profit or loss, classified as held for trading | [1] | 6,012 | 6,166 |
Current financial assets available-for-sale | [2] | 207 | 238 |
Non-Operating Finance Receivables |  | 209 | 385 |
Borrowings |  | 24,707 | 27,239 |
Decrease in longterm debt, new issuance |  | 1,842 |  |
Decrease in long term debts |  | 1,378 |  |
Fair value of long-term debt |  | € 23,764 | € 25,358 |
Bottom Of Range [Member] |  |  |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |  |  |
Discount rates used to measure fair value of financial debt |  | (0.20%) | (0.20%) |
Top Of Range [Member] |  |  |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |  |  |
Discount rates used to measure fair value of financial debt |  | 2.50% | 2.60% |
Eni SpA [Member] |  |  |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |  |  |
Current financial assets at fair value through profit or loss, classified as held for trading |  | € 5,793 | € 6,062 |
Citibank Europe Plc [Member] |  |  |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |  |  |
Bank loans received |  | € 1,664 | 1,953 |
Ordinary Bonds Issued [Member] |  |  |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |  |  |
Borrowings, maturity |  | 2018–2043 |  |
Ordinary bonds issued |  | € 2,199 |  |
Borrowings |  | 17,965 | 19,003 |
New Ordinary Bonds Issued |  | 1,817 |  |
Ordinary Bonds Issued [Member] | Eni SpA [Member] |  |  |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |  |  |
Ordinary bonds issued |  | 1,795 |  |
New Ordinary Bonds Issued |  | 1,403 |  |
Euro Medium Term Notes [Member] |  |  |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |  |  |
Borrowings |  | 16,963 |  |
Notional amount |  | 20,000 |  |
Issuance of debt notes drawn |  | 16,800 |  |
Other Bonds [Member] |  |  |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |  |  |
Borrowings |  | 1,002 |  |
Long-term debt and current portion of long-term debt [Member] |  |  |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |  |  |
Borrowings |  | 22,465 | € 23,843 |
Joint Venture And Associates [Member] |  |  |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |  |  |
Other current financial assets |  | 236 |  |
Eni Finance International SA [Member] | Ordinary Bonds Issued [Member] |  |  |  |
DisclosureOfBorrowingsExplanatoryLineItems [Line Items] |  |  |  |
Ordinary bonds issued |  | 404 |  |
New Ordinary Bonds Issued |  | € 414 |  |
[1] | Income or expense were recognized in the profit and loss account within &#147;Finance income (expense)&#148;.
[2] | In the profit and loss account, economic effects were essentially recognized as expense within &#147;Purchase, services and other&#148; for &euro;933 million (expense for &euro;840 million in 2016) (impairments net of reversal) and as expense for &euro;25 million within &#147;Finance income (expense)&#148; (expense for &euro;276 million in 2016) (exchange rate differences at year-end and amortized cost).

X
- Definition The amount of bank loans received. + References No definition available. + Details
Name: | E_BankLoansReceived
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of decrease in longterm debt new issuance. + References No definition available. + Details
Name: | E_DecreaseInLongtermDebtNewIssuance
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of decrease in long term debts. + References No definition available. + Details
Name: | E_Decreaseinlongtermdebts
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 discount rates used to measure fair value of financial debt. + References No definition available. + Details
Name: | E_DiscountRatesUsedToMeasureFairValueOfFinancialDebt
Namespace Prefix: | E_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The element represents about the issuance of debt notes drawn. + References No definition available. + Details
Name: | E_IssuanceOfDebtNotesDrawn
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of new ordinary bonds issued. + References No definition available. + Details
Name: | E_NewOrdinaryBondsIssued
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition It represents non- operating financing receivables. + References No definition available. + Details
Name: | E_NonoperatingFinanceReceivables
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of ordinary bonds issued. + References No definition available. + Details
Name: | E_OrdinaryBondsIssued
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of unused long-term committed borrowing facilities due in next year. + References No definition available. + Details
Name: | E_OutstandingRetainedUndrawnLongtermCommittedBorrowing
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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 maturity of 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_BorrowingsMaturity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of current financial assets measured at fair value through profit or loss classified as held for trading. [Refer: Financial assets at fair value through profit or loss, classified as held for trading] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 8 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_8_a&doctype=Standard&book=B -URIDate 2017-03-09 Reference 2: 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_CurrentFinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of current financial assets available-for-sale. [Refer: Financial assets available-for-sale; Current financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 8 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_8_d&doctype=Standard&book=B -URIDate 2017-03-09 + Details
Name: | ifrs-full_CurrentFinancialAssetsAvailableforsale
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The fair value of financial liabilities. [Refer: At fair value [member]; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_25&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_FinancialLiabilitiesAtFairValue
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The nominal or face amount of a financial instrument, used to calculate payments made on that instrument. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_NotionalAmount
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of current financial assets that the entity does not separately disclose in the same statement or note. [Refer: Other financial assets; Current financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_d&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_OtherCurrentFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash outflow for repayments of non-current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 17 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_17&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_RepaymentsOfNoncurrentBorrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 50 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_50_a&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_UndrawnBorrowingFacilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | E_ParentNameAxis=E_EniSpAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=E_JointVentureAndAssociatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=E_EniFinanceInternationalSAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |