XML 187 R180.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Provisions for contingencies (Details Textual) - EUR (€) € in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatoryLineItems [Line Items] |  |  |
Provision for decommissioning, restoration and rehabilitation costs | € 81 | € 118 | € 131
Increase (decrease) through change in discount rate, other provisions | 264 |  |
Environment related provision | 2,653 |  |
Legal proceedings provision | 1,107 |  |
Provision for taxes | 527 |  |
Charges for unutilized infrastructures | 99 |  |
Loss adjustments and actuarial provisions [Member] |  |  |
DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatoryLineItems [Line Items] |  |  |
Loss adjustments and actuarial provisions | 205 |  |
Reinsurance contracts receivable | 157 |  |
Provision for redundancy incentives [Member] |  |  |
DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatoryLineItems [Line Items] |  |  |
Increase (decrease) through change in discount rate, other provisions | 1 |  |
Provision for redundancy incentives | 140 |  |
Onerous Contracts Provision [Member] |  |  |
DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatoryLineItems [Line Items] |  |  |
Increase (decrease) through change in discount rate, other provisions | 2 |  |
Onerous contracts provision | 60 |  |
Refining & Marketing [Member] |  |  |
DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatoryLineItems [Line Items] |  |  |
Environment related provision | 326 |  |
Exploration & Production segment [Member] |  |  |
DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatoryLineItems [Line Items] |  |  |
Legal proceedings provision | 494 |  |
Provision for taxes | 499 |  |
Gas & Power Segment [Member] |  |  |
DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatoryLineItems [Line Items] |  |  |
Legal proceedings provision | 457 |  |
Syndial SpA [Member] |  |  |
DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatoryLineItems [Line Items] |  |  |
Environment related provision | € 2,119 |  |
Bottom Of Range [Member] |  |  |
DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatoryLineItems [Line Items] |  |  |
Discount rate used in current estimate of value in use | 0.10% | (0.01%) |
Top Of Range [Member] |  |  |
DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatoryLineItems [Line Items] |  |  |
Discount rate used in current estimate of value in use | 5.90% | 5.80% |
Exploration Production Segment [Member] |  |  |
DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatoryLineItems [Line Items] |  |  |
Provision for decommissioning, restoration and rehabilitation costs | € 7,649 |  |
Oil and natural gas [Member] |  |  |
DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatoryLineItems [Line Items] |  |  |
Provision for decommissioning, restoration and rehabilitation costs | 8,126 |  |
Decommissioning costs, Revision of Previous Estimates | 370 |  |
Increase (decrease) through change in discount rate, other provisions | € 271 |  |

X
- Definition The amount of charges for unutilized infrastructures. + References No definition available. + Details
Name: | E_ChargesForUnutilizedInfrastructures
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of revision of estimates related to decommissioning, restoration and rehabilitation. + References No definition available. + Details
Name: | E_DecommissioningCostsRevisionOfPreviousEstimates
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition The amount of provision for environmental risks. + References No definition available. + Details
Name: | E_EnvironmentRelatedProvision
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The represents the amount of loss adjustments and actuarial provisions. + References No definition available. + Details
Name: | E_LossAdjustmentsAndActuarialProvisions
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The represents the amount of provision for redundancy incentives. + References No definition available. + Details
Name: | E_ProvisionForRedundancyIncentives
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of provision for taxes. + References No definition available. + Details
Name: | E_ProvisionForTaxes
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The receivable of amount from reinsurance. + References No definition available. + Details
Name: | E_ReinsuranceContractsReceivable
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The discount rate used in the current estimate of the present value of the future cash flows expected to be derived from an asset or cash-generating unit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2017-01-01 -Paragraph 130 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2017-03-01&anchor=para_130_g&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DescriptionOfDiscountRatesUsedInCurrentEstimateOfValueInUse
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The increase (decrease) in other provisions resulting from a change in discount rate. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2017-01-01 -Paragraph 84 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-01&anchor=para_84_e&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_IncreaseDecreaseThroughChangeInDiscountRateOtherProvisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of provision for legal proceedings. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2017-01-01 -Section Example 10 A court case -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-01&anchor=sect_Example10Acourtcase&doctype=Illustrative%20Examples -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2017-01-01 -Paragraph 87 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-01&anchor=para_87&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_LegalProceedingsProvision
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of provision for onerous contracts. An onerous contract is a contract in which the unavoidable costs of meeting the obligation under the contract exceed the economic benefits expected to be received under it. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2019-01-01 -Name IAS -Number 37 -IssueDate 2017-01-01 -Section Example 8 An onerous contract -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-02&anchor=sect_Example8Anonerouscontract&doctype=Illustrative%20Examples&book=B -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2017-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-01&anchor=para_66&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_OnerousContractsProvision
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of provision for costs related to decommissioning, restoration and rehabilitation. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2017-01-01 -Section D Examples: disclosures -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-01&anchor=sect_DExamples:disclosures&doctype=Illustrative%20Examples -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2017-01-01 -Paragraph 87 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-01&anchor=para_87&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_ProvisionForDecommissioningRestorationAndRehabilitationCosts
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=E_LossAdjustmentsAndActuarialProvisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=E_ProvisionForRedundancyIncentivesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ifrs-full_OnerousContractsProvisionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentConsolidationItemsAxis=E_RefiningAndMarketingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentConsolidationItemsAxis=E_ExplorationAndProductionsegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentConsolidationItemsAxis=E_GasAndPowerSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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: | ifrs-full_SegmentsAxis=E_ExplorationAndProductionSegmentTotalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ProductsAndServicesAxis=E_OilAndNaturalGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |