XML 214 R103.htm IDEA: XBRL DOCUMENT
v3.21.1

Property, plant and equipment - Stratification of suspended wells (Details) € in Millions | Dec. 31, 2020 EUR (€) item | Dec. 31, 2019 EUR (€) item | Dec. 31, 2018 EUR (€) item | Dec. 31, 2017 EUR (€)
--- | --- | --- | --- | ---
Property, plant and equipment |  |  |  |
Property, plant and equipment | € 53,943 | € 62,192 | € 60,302 |
Suspended exploration wells pending final determination |  |  |  |
Property, plant and equipment |  |  |  |
Property, plant and equipment | € 1,268 | € 1,246 | € 1,101 | € 1,263
Costs capitalized and suspended for exploratory well activity, number of wells in Eni's interest | item | 37.0 | 40.5 | 34.1 |
Suspended exploration wells pending final determination | fields including wells drilled over the last 12 months |  |  |  |
Property, plant and equipment |  |  |  |
Property, plant and equipment | € 157 | € 185 | € 111 |
Costs capitalized and suspended for exploratory well activity, number of wells in Eni's interest | item | 6.7 | 7.7 | 7.0 |
Suspended exploration wells pending final determination | fields for which the delineation campaign is in progress |  |  |  |
Property, plant and equipment |  |  |  |
Property, plant and equipment | € 631 | € 556 | € 217 |
Costs capitalized and suspended for exploratory well activity, number of wells in Eni's interest | item | 14.9 | 11.3 | 4.7 |
Suspended exploration wells pending final determination | fields including commercial discoveries that proceeds to sanctioning |  |  |  |
Property, plant and equipment |  |  |  |
Property, plant and equipment | € 480 | € 505 | € 773 |
Costs capitalized and suspended for exploratory well activity, number of wells in Eni's interest | item | 15.4 | 21.5 | 22.4 |
Suspended exploration wells pending final determination | within 1 year |  |  |  |
Property, plant and equipment |  |  |  |
Property, plant and equipment | € 157 | € 185 | € 111 |
Costs capitalized and suspended for exploratory well activity, number of wells in Eni's interest | item | 6.7 | 7.7 | 7.0 |
Suspended exploration wells pending final determination | between 1 and 3 years |  |  |  |
Property, plant and equipment |  |  |  |
Property, plant and equipment | € 250 | € 171 | € 87 |
Costs capitalized and suspended for exploratory well activity, number of wells in Eni's interest | item | 11.0 | 6.4 | 2.9 |
Suspended exploration wells pending final determination | beyond 3 years |  |  |  |
Property, plant and equipment |  |  |  |
Property, plant and equipment | € 861 | € 890 | € 903 |
Costs capitalized and suspended for exploratory well activity, number of wells in Eni's interest | item | 19.3 | 26.4 | 24.2 |

X
- Definition Number of wells. + References No definition available. + Details
Name: | e_CostsForExploratoryWellsCapitalizedAndSuspendedNumberOfWells
Namespace Prefix: | e_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_a&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_PropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=e_SuspendedExplorationWellsPendingFinalDeterminationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_OilAndGasAssetsAxis=e_FieldsIncludingWellsDrilledOverLast12MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_OilAndGasAssetsAxis=e_DelineationCampaignInProgressMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_OilAndGasAssetsAxis=e_CommercialDiscoveriesInProgressMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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_LaterThanOneYearAndNotLaterThanThreeYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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