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Income tax receivables and payables - Additional information (Details) - EUR (€) € in Millions	Dec. 31, 2023	Dec. 31, 2022
Income tax receivables and payables
Current income tax payables for regulatory provisions	€ 455
Pending litigation with tax authorities	€ 33	€ 206

X

- Definition

The current amount of current income tax liabilities for regulatory provisions.

+ References

No definition available.

+ Details

Name:	e_CurrentIncomeTaxLiabilitiesForRegulatoryProvisionsCurrent
Namespace Prefix:	e_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Disclosure Of Tax Receivables And Payables

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No definition available.

+ Details

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

X

- Definition

The non-current amount of tax liabilities relating to pending litigation with tax authorities.

+ References

No definition available.

+ Details

Name:	e_PendingLitigationWithTaxAuthoritiesTaxLiabilitiesNonCurrent
Namespace Prefix:	e_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant