XML 184 R177.htm IDEA: XBRL DOCUMENT v3.8.0.1

Long-term debt and current portion of long-term debt (Details 7) € in Millions	12 Months Ended
	Dec. 31, 2017 EUR (€)
DisclosureOfBorrowingsExplanatoryLineItems [Line Items]
Carrying amount at beginning	€ 27,239
Cash flows	(1,712)
Currency translation differences	(810)
Other non-monetary changes	(10)
Carrying amount at Ending	24,707
Long-term debt and current portion of long-term debt [member]
DisclosureOfBorrowingsExplanatoryLineItems [Line Items]
Carrying amount at beginning	23,843
Cash flows	(1,131)
Currency translation differences	(236)
Other non-monetary changes	(11)
Carrying amount at Ending	22,465
Short-term borrowings [member]
DisclosureOfBorrowingsExplanatoryLineItems [Line Items]
Carrying amount at beginning	3,396
Cash flows	(581)
Currency translation differences	(574)
Other non-monetary changes	1
Carrying amount at Ending	€ 2,242

X

- References

No definition available.

+ Details

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

X

- Definition

The amount of increase decrease in borrowings due to currency translation differences.

+ References

No definition available.

+ Details

Name:	E_Increasedecreaseinborrowingsduetocurrencytranslationdifferences
Namespace Prefix:	E_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of increase decrease in borrowings due to monetary changes.

+ References

No definition available.

+ Details

Name:	E_Increasedecreaseinborrowingsduetomonetarychanges
Namespace Prefix:	E_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of increase decrease in borrowings due to non monetary changes.

+ References

No definition available.

+ Details

Name:	E_Increasedecreaseinborrowingsduetononmonetarychanges
Namespace Prefix:	E_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard
-URIDate 2017-03-09

+ Details

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

X

- Details

Name:	ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis=E_LongTermDebtAndCurrentPortionOfLongTermDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis=ifrs-full_ShorttermBorrowingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: