Revenues and other income - Other income and revenues (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues and other income
Gains from sale of assets and businesses	€ 48	€ 27	€ 48
Other proceeds	2,369	1,072	1,127
Other income and revenues	€ 2,417	€ 1,099	€ 1,175

The amount of other income and revenue from other proceeds.

No definition available.

Name:	e_OtherRevenueFromOtherProceeds
Namespace Prefix:	e_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration