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Guarantees, commitments and risks (Details 1) - EUR (€) € in Millions | Dec. 31, 2017 | Dec. 31, 2016
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Guarantees Commitments And Risks Details 1 |  |
Commitments | € 14,498 | € 20,682
Risks | 691 | 605
Commitments and risks | € 15,189 | € 21,287

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- Definition The amount of commitments and risks. + References No definition available. + Details
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Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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- Definition The amount of risks associated with the entity. + References No definition available. + Details
Name: | E_Risks
Namespace Prefix: | E_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of capital commitments for which the entity has entered into a contract. [Refer: Capital commitments] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard -URIDate 2017-03-09 + Details
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