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Equity (Details) - EUR (€) € in Millions	Dec. 31, 2023	Dec. 31, 2022
Equity
Share capital	€ 4,005	€ 4,005
Retained earnings	32,988	23,455
Cumulative currency translation differences	5,238	7,564
Other reserves and equity instruments:
Perpetual subordinated bonds	5,000	5,000
Legal reserve	959	959
Reserve for treasury shares	2,333	2,937
Reserve for OCI on cash flow hedging derivatives net of tax effect	36	(342)
Reserve for OCI on defined benefit plans net of tax effect	(88)	(58)
Reserve for OCI on equity-accounted investments	98	46
Reserve for OCI on other investments valued at fair value	98	53
Reserve for convertible bond issue	79
Other reserves		190
Treasury shares	(2,333)	(2,937)
Profit for the year	4,771	13,887
Equity attributable to equity holders of Eni	€ 53,184	€ 54,759

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The amount of miscellaneous other reserves.

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Carrying value of perpetual subordinated bonds issued by the company.

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The profit (loss) attributable to ordinary equity holders of the parent equity.

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The amount of reserve of share of other comprehensive income of investments accounted for using equity method.

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A component of equity representing the reserve for the redemption of the entity's own shares.

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The amount of equity attributable to the owners of the parent. This specifically excludes non-controlling interest.

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The nominal value of capital issued.

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A component of equity representing the accumulated portion of gain (loss) on a hedging instrument that is determined to be an effective hedge for cash flow hedges. [Refer: Cash flow hedges [member]]

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A component of equity representing components of convertible instruments classified as equity.

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A component of equity representing exchange differences on translation of financial statements recognised in other comprehensive income and accumulated in equity. [Refer: Other comprehensive income]

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A component of equity representing accumulated gains and losses from investments in equity instruments that the entity has designated at fair value through other comprehensive income.

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A component of equity representing the accumulated remeasurements of defined benefit plans. [Refer: Defined benefit plans [member]]

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A component of equity representing the entity’s cumulative undistributed earnings or deficit excluding the profit or loss for the reporting period. [Refer: Retained earnings]

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A component of equity representing reserves created based on legal requirements.

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An entity’s own equity instruments, held by the entity or other members of the consolidated group.

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