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Cash and cash equivalents (Details 2)	12 Months Ended
	Dec. 31, 2022
US Dollars
Cash and cash equivalents
Average maturity period	21 days
Effective interest rate	4.43%
Euro
Cash and cash equivalents
Average maturity period	12 days
Effective interest rate	1.75%

X

- Definition

The period of the average maturity of bank deposits in days.

+ References

No definition available.

+ Details

Name:	e_AverageMaturityPeriod
Namespace Prefix:	e_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The percentage of effective interest rate on deposits.

+ References

No definition available.

+ Details

Name:	e_DepositsEffectiveInterestRate
Namespace Prefix:	e_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	e_DisclosureOfDetailedInformationAboutCashAndCashEquivalentsLineItems
Namespace Prefix:	e_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_CurrencyAxis=currency_USD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CurrencyAxis=currency_EUR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: