XML 263 R167.htm IDEA: XBRL DOCUMENT
v3.22.1

Equity - Reserves for Other Comprehensive Income (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Reserves within equity |  |
Balance | € 37,493 | € 47,900
Balance | 44,519 | 37,493
Reserve for OCI on cash flow hedge derivatives |  |
Reserves within equity |  |
Balance | (5) | (465)
Changes of the year | (1,045) | (199)
Reversal to inventories adjustments | 1 | (9)
Reclassification adjustments | 153 | 668
Balance | (896) | (5)
Reserve for OCI on cash flow hedge derivatives | Gross reserve |  |
Reserves within equity |  |
Balance | (7) | (656)
Changes of the year | (1,479) | (280)
Reversal to inventories adjustments | 2 | (12)
Reclassification adjustments | 215 | 941
Balance | (1,269) | (7)
Reserve for OCI on cash flow hedge derivatives | Deferred tax liabilities, gross |  |
Reserves within equity |  |
Balance | 2 | 191
Changes of the year | 434 | 81
Reversal to inventories adjustments | (1) | 3
Reclassification adjustments | (62) | (273)
Balance | 373 | 2
Reserve for OCI on defined benefit plans |  |
Reserves within equity |  |
Balance | (158) | (166)
Changes of the year | 42 | 9
Currency translation differences | (1) | (1)
Balance | (117) | (158)
OCI relating to equity-accounted investments | (4) | (7)
Reserve for OCI on defined benefit plans | Gross reserve |  |
Reserves within equity |  |
Balance | (205) | (183)
Changes of the year | 119 | (16)
Currency translation differences | 2 | (6)
Balance | (84) | (205)
Reserve for OCI on defined benefit plans | Deferred tax liabilities, gross |  |
Reserves within equity |  |
Balance | 47 | 17
Changes of the year | (77) | 25
Currency translation differences | (3) | 5
Balance | (33) | 47
Reserve for OCI on equity-accounted investments |  |
Reserves within equity |  |
Balance | 85 | 53
Changes of the year | (32) | 32
Currency translation differences | 1 |
Balance | 54 | 85
Reserve for OCI on Investments fair value |  |
Reserves within equity |  |
Balance | 36 | 12
Changes of the year | 105 | 24
Balance | € 141 | € 36

X
- Definition Represents the reclassification adjustments in equity reserve for during the year. + References No definition available. + Details
Name: | e_ReclassificationAdjustmentsOfReservesWithinEquity
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the changes in equity during the period. + References No definition available. + Details
Name: | e_ReservesWithinEquityChangesDuringPeriod
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the equity reserve for financial assets. + References No definition available. + Details
Name: | e_ReservesWithinEquityForeignCurrencyTranslationDifferences
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reversal to Inventories Adjustments + References No definition available. + Details
Name: | e_ReversalToInventoriesAdjustments
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Share of accumulated other comprehensive income of equity-accounted investments + References No definition available. + Details
Name: | e_ShareOfAccumulatedOtherComprehensiveIncomeOfEquityAccountedInvestments
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition The amount of residual interest in the assets of the entity after deducting all its liabilities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2021-01-01 -Paragraph 24 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2021-en-r&anchor=para_24_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2021-01-01 -Paragraph 32 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2021-en-r&anchor=para_32_a_i&doctype=Standard -URIDate 2021-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2021-01-01 -Paragraph 93 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2021-en-r&anchor=para_93_a&doctype=Standard -URIDate 2021-03-24 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2021-01-01 -Paragraph 93 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2021-en-r&anchor=para_93_b&doctype=Standard -URIDate 2021-03-24 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2021-01-01 -Paragraph 93 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2021-en-r&anchor=para_93_e&doctype=Standard -URIDate 2021-03-24 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard -URIDate 2021-03-24 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_e&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_Equity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_ReservesWithinEquityAxis=ifrs-full_ReserveOfCashFlowHedgesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_EquityReserveCarryingAmountDeferredTaxLiabilitiesAxis=e_GrossReserveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_EquityReserveCarryingAmountDeferredTaxLiabilitiesAxis=e_DeferredTaxLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ReservesWithinEquityAxis=ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ReservesWithinEquityAxis=e_ReserveOfShareOfOtherComprehensiveIncomeOfInvestmentsAccountedForUsingEquityMethodMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ReservesWithinEquityAxis=ifrs-full_ReserveOfGainsAndLossesFromInvestmentsInEquityInstrumentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |