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Current income tax receivables and payables (Details) - EUR (€) € in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Current Tax Assets [Line Items] |  |
Income taxes Receivable | € 191 | € 191
Other taxes and duties Receivable | 561 | 729
Tax asset total | 752 | 920
Income taxes Payable | 440 | 472
Other taxes and duties Payable | 1,432 | 1,472
Total taxes and duties payable current | € 1,872 | € 1,944

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- Definition CurrentTaxAssetsLineItems + References No definition available. + Details
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Namespace Prefix: | e_
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Balance Type: | na
Period Type: | duration

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- Definition The amount of other current taxes and duties payable. + References No definition available. + Details
Name: | e_OtherTaxesAndDutiesPayableCurrent
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The element represents the current receivables from taxes. + References No definition available. + Details
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Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The amount of total taxes and duties payable. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of current receivables from taxes other than income tax. [Refer: Receivables from taxes other than income tax] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_78_b&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The excess of amount paid for current tax in respect of current and prior periods over the amount due for those periods. Current tax is the amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph n -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_n&doctype=Standard -URIDate 2018-03-16 + Details
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Balance Type: | debit
Period Type: | instant

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- Definition The amount of current tax for current and prior periods to the extent unpaid. Current tax is the amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph n -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_n&doctype=Standard -URIDate 2018-03-16 + Details
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