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Investments - Net carrying amount (Details) - EUR (€) € in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Investments |  |  |
Book value | € 12,630 | € 12,092 | € 5,887
Associates |  |  |
Investments |  |  |
Book value | 4,327 | 4,977 |
Associates | Var Energi ASA |  |  |
Investments |  |  |
Book value | € 447 | € 763 |
% of the investment in associate | 63.04% | 63.08% |
Associates | Abu Dhabi Oil Refining Company (Takreer) |  |  |
Investments |  |  |
Book value | € 2,434 | € 2,497 |
% of the investment in associate | 20.00% | 20.00% |
Associates | QatarEnergy LNG NFE (5) |  |  |
Investments |  |  |
Book value | € 439 | € 302 |
% of the investment in associate | 25.00% | 25.00% |
Associates | Coral FLNG SA |  |  |
Investments |  |  |
Book value | € 239 | € 330 |
% of the investment in associate | 25.00% | 25.00% |
Associates | Novamont SpA |  |  |
Investments |  |  |
Book value |  | € 255 |
% of the investment in associate |  | 35.00% |
Associates | ADNOC Global Trading Ltd |  |  |
Investments |  |  |
Book value | € 145 | € 158 |
% of the investment in associate | 20.00% | 20.00% |
Associates | Novis Renewables Holdings Llc |  |  |
Investments |  |  |
Book value | € 70 | € 74 |
% of the investment in associate | 49.00% | 49.00% |
Associates | Bluebell Solar Class A Holdings II LlC |  |  |
Investments |  |  |
Book value | € 70 | € 73 |
% of the investment in associate | 99.00% | 99.00% |
Associates | United Gas Derivatives Co |  |  |
Investments |  |  |
Book value | € 81 | € 72 |
% of the investment in associate | 33.33% | 33.33% |
Associates | Altre |  |  |
Investments |  |  |
Book value | € 402 | € 453 |
Joint ventures |  |  |
Investments |  |  |
Book value | 8,250 | 7,065 |
Joint ventures | Mozambique Rovuma Venture SpA |  |  |
Investments |  |  |
Book value | € 343 | € 308 |
% of the investment in joint venture | 35.71% | 35.71% |
Joint ventures | Cardon IV SA |  |  |
Investments |  |  |
Book value | € 443 | € 433 |
% of the investment in joint venture | 50.00% | 50.00% |
Joint ventures | Azule Energy Holdings Ltd |  |  |
Investments |  |  |
Book value | € 4,750 | € 5,073 |
% of the investment in joint venture | 50.00% | 50.00% |
Joint ventures | St. Bernard Renewables Llc |  |  |
Investments |  |  |
Book value | € 829 |  |
% of the investment in joint venture | 50.00% |  |
Joint ventures | Saipem SpA |  |  |
Investments |  |  |
Book value | € 722 | € 645 |
% of the investment in joint venture | 31.20% | 31.20% |
Joint ventures | SeaCorridor Srl |  |  |
Investments |  |  |
Book value | € 530 |  |
% of the investment in joint venture | 50.10% |  |
Joint ventures | Vårgrønn AS |  |  |
Investments |  |  |
Book value | € 336 | € 370 |
% of the investment in joint venture | 65.00% | 65.00% |
Joint ventures | GreenIT SpA [member] |  |  |
Investments |  |  |
Book value | € 92 | € 74 |
% of the investment in joint venture | 51.00% | 51.00% |
Joint ventures | Lotte Versalis Elastomers Co Ltd |  |  |
Investments |  |  |
Book value | € 43 | € 41 |
% of the investment in joint venture | 50.00% | 50.00% |
Joint ventures | Hergo Renewables SpA [member] |  |  |
Investments |  |  |
Book value | € 32 | € 33 |
% of the investment in joint venture | 65.00% | 65.00% |
Joint ventures | LabAnalysis Environmental Scienze Srl |  |  |
Investments |  |  |
Book value | € 25 |  |
% of the investment in joint venture | 30.00% |  |
Joint ventures | Societa Oleodotti Meridionali - SOM SpA |  |  |
Investments |  |  |
Book value | € 21 | € 29 |
% of the investment in joint venture | 70.00% | 70.00% |
Joint ventures | Altre |  |  |
Investments |  |  |
Book value | € 84 | € 59 |
Investments in unconsolidated entities controlled by Eni |  |  |
Investments |  |  |
Book value | 53 | 50 |
Investments in unconsolidated entities controlled by Eni | Altre |  |  |
Investments |  |  |
Book value | € 53 | € 50 |

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- Definition The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2023-01-01 -Paragraph 24 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2023-en-r&anchor=para_24_a&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2023-01-01 -Paragraph B16 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2023-en-r&anchor=para_B16&doctype=Appendix&subtype=B -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 54 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_54_e&doctype=Standard -URIDate 2023-03-23 + Details
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