XML 208 R201.htm IDEA: XBRL DOCUMENT v3.8.0.1

Shareholders' equity (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfClassesOfShareCapitalExplanatoryLineItems [Line Items]
Net profit	€ 3	€ 7	€ (595)
Shareholders' equity	49	49
EniPower Mantova SpA [Member]
DisclosureOfClassesOfShareCapitalExplanatoryLineItems [Line Items]
Net profit	4	5
Shareholders' equity	23	21
Adriaplin Doo [Member]
DisclosureOfClassesOfShareCapitalExplanatoryLineItems [Line Items]
Net profit	2	2
Shareholders' equity	14	13
Serfactoring SpA [Member]
DisclosureOfClassesOfShareCapitalExplanatoryLineItems [Line Items]
Net profit	(3)
Shareholders' equity	€ 12	€ 15

X

- References

No definition available.

+ Details

Name:	E_DisclosureOfClassesOfShareCapitalExplanatoryLineItems
Namespace Prefix:	E_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of equity in a subsidiary not attributable, directly or indirectly, to a parent. [Refer: Subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph 12
-Subparagraph f
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_12_f&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 54
-Subparagraph q
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_q&doctype=Standard
-URIDate 2017-03-09

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 10
-IssueDate 2017-01-01
-Paragraph 22
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=10&date=2017-03-01&anchor=para_22&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_NoncontrollingInterests
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The profit (loss) attributable to non-controlling interests. [Refer: Profit (loss); Non-controlling interests]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph 12
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_12_e&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 81B
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_81B_a_i&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ProfitLossAttributableToNoncontrollingInterests
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=E_EniPowerMantovaSpAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=E_AdriaplinDooMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=E_SerfactoringSpAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: