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

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- Definition The current amount of current income tax liabilities for regulatory provisions. + References No definition available. + Details
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Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Disclosure Of Tax Receivables And Payables + References No definition available. + Details
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- 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