XML 226 R219.htm IDEA: XBRL DOCUMENT v3.8.0.1

Revenues (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Revenue Explanatory [Abstract]
Revenues from sales and services	€ 66,920	€ 55,764	€ 72,290
Change in contract work in progress	(1)	(2)	(4)
Net sales from operations	€ 66,919	€ 55,762	€ 72,286

X

- Definition

It represents the amount of change in contract work in progress.

+ References

No definition available.

+ Details

Name:	E_ChangeInContractWorkInProgress
Namespace Prefix:	E_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

It represents the amount of net sales from operations.

+ References

No definition available.

+ Details

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

X

- Definition

It represents the amount of revenues from sales and services gross.

+ References

No definition available.

+ Details

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