XML 116 R109.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Financial assets available for sale (Details 3) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 EUR (€)
DisclosureOfFinancialAssetsAvailableForSaleLineItems [Line Items] |
Carrying amount at beginning of period | € 52,329
Carrying amount at End of period | 42,490
Financial Assets Available for sale Category [Member] |
DisclosureOfFinancialAssetsAvailableForSaleLineItems [Line Items] |
Carrying amount at beginning of period | 4
Changes recognized in equity | (4)
Carrying amount at End of period | 0
Financial Assets Available for sale Category [Member] | Reserve of gains and losses on remeasuring available-for-sale financial assets [member] |
DisclosureOfFinancialAssetsAvailableForSaleLineItems [Line Items] |
Carrying amount at beginning of period | 5
Changes recognized in equity | (5)
Carrying amount at End of period | 0
Financial Assets Available for sale Category [Member] | Reserve of Deferred Tax Liabilities [Member] |
DisclosureOfFinancialAssetsAvailableForSaleLineItems [Line Items] |
Carrying amount at beginning of period | (1)
Changes recognized in equity | 1
Carrying amount at End of period | € 0

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

X
- Definition The increase (decrease) in equity resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Equity] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 106 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_106_d&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition A component of equity representing reserves within equity, not including retained earnings. [Refer: Retained earnings] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 78 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_78_e&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_OtherReserves
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_FinancialAssetsAvailableforsaleCategoryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_ReserveOfGainsAndLossesOnRemeasuringAvailableforsaleFinancialAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=E_ReserveofDeferredTaxLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |