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Finance debt - Ordinary bonds (Details) - EUR (€) € in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
Borrowings |  |
Borrowings | € 28,729 | € 26,917
Ordinary Bonds with sustainability-linked bonds |  |
Borrowings |  |
Nominal value | 21,284 |
Discount on bond issue and accrued expenses | 207 |
Borrowings | 21,491 |
Euro Medium Term Notes, Ordinary Bonds with sustainability-linked bonds [member] |  |
Borrowings |  |
Nominal value | 16,778 |
Discount on bond issue and accrued expenses | 153 |
Borrowings | 16,931 |
Other Bonds |  |
Borrowings |  |
Nominal value | 4,506 |
Discount on bond issue and accrued expenses | 54 |
Borrowings | 4,560 |
ENI SpA | Euro Medium Term Notes One |  |
Borrowings |  |
Nominal value | 1,250 |
Discount on bond issue and accrued expenses | 22 |
Borrowings | € 1,272 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2033 |
Borrowings, interest rate | 4.25% |
ENI SpA | Euro Medium Term Notes Two |  |
Borrowings |  |
Nominal value | € 1,200 |
Discount on bond issue and accrued expenses | 14 |
Borrowings | € 1,214 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2025 |
Borrowings, interest rate | 3.75% |
ENI SpA | Euro Medium Term Notes Three |  |
Borrowings |  |
Nominal value | € 1,000 |
Discount on bond issue and accrued expenses | 31 |
Borrowings | € 1,031 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2029 |
Borrowings, interest rate | 3.625% |
ENI SpA | Euro Medium Term Notes Four |  |
Borrowings |  |
Nominal value | € 1,000 |
Discount on bond issue and accrued expenses | 12 |
Borrowings | € 1,012 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2026 |
Borrowings, interest rate | 1.50% |
ENI SpA | Euro Medium Term Notes Five |  |
Borrowings |  |
Nominal value | € 1,000 |
Discount on bond issue and accrued expenses | 4 |
Borrowings | € 1,004 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2030 |
Borrowings, interest rate | 0.625% |
ENI SpA | Euro Medium Term Notes Six |  |
Borrowings |  |
Nominal value | € 1,000 |
Discount on bond issue and accrued expenses | 4 |
Borrowings | € 1,004 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2026 |
Borrowings, interest rate | 1.25% |
ENI SpA | Euro Medium Term Notes Seven |  |
Borrowings |  |
Nominal value | € 1,000 |
Discount on bond issue and accrued expenses | 10 |
Borrowings | € 1,010 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2031 |
Borrowings, interest rate | 2.00% |
ENI SpA | Euro Medium Term Notes Eight |  |
Borrowings |  |
Nominal value | € 900 |
Discount on bond issue and accrued expenses | 1 |
Borrowings | € 901 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2024 |
Borrowings, interest rate | 0.625% |
ENI SpA | Euro Medium Term Notes Nine |  |
Borrowings |  |
Nominal value | € 800 |
Discount on bond issue and accrued expenses | 3 |
Borrowings | € 803 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2028 |
Borrowings, interest rate | 1.625% |
ENI SpA | Euro Medium Term Notes Ten |  |
Borrowings |  |
Nominal value | € 750 |
Discount on bond issue and accrued expenses | 13 |
Borrowings | € 763 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2024 |
Borrowings, interest rate | 1.75% |
ENI SpA | Euro Medium Term Notes Eleven |  |
Borrowings |  |
Nominal value | € 750 |
Discount on bond issue and accrued expenses | 8 |
Borrowings | € 758 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2027 |
Borrowings, interest rate | 1.50% |
ENI SpA | Euro Medium Term Notes Twelve |  |
Borrowings |  |
Nominal value | € 750 |
Discount on bond issue and accrued expenses | (3) |
Borrowings | € 747 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2034 |
Borrowings, interest rate | 1.00% |
ENI SpA | Euro Medium Term Notes Thirteen |  |
Borrowings |  |
Nominal value | € 679 |
Discount on bond issue and accrued expenses | 10 |
Borrowings | € 689 |
Borrowings, original currency | USD |
Borrowings, maturity | 2027 |
Borrowings, interest rate description | variable |
ENI SpA | Euro Medium Term Notes Fourteen |  |
Borrowings |  |
Nominal value | € 650 |
Discount on bond issue and accrued expenses | 5 |
Borrowings | € 655 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2025 |
Borrowings, interest rate | 1.00% |
ENI SpA | Euro Medium Term Notes Fifteen |  |
Borrowings |  |
Nominal value | € 600 |
Discount on bond issue and accrued expenses | (2) |
Borrowings | € 598 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2028 |
Borrowings, interest rate | 1.125% |
ENI SpA | Euro Medium Term Notes Sixteen |  |
Borrowings |  |
Nominal value | € 500 |
Discount on bond issue and accrued expenses | 3 |
Borrowings | € 503 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2025 |
Borrowings, interest rate | 1.275% |
ENI SpA | Euro Medium Term Notes Seventeen |  |
Borrowings |  |
Nominal value | € 452 |
Borrowings | € 452 |
Borrowings, original currency | USD |
Borrowings, maturity | 2026 |
Borrowings, interest rate description | variable |
ENI SpA | Euro Medium Term Notes Eighteen |  |
Borrowings |  |
Nominal value | € 452 |
Discount on bond issue and accrued expenses | (1) |
Borrowings | € 451 |
Borrowings, original currency | USD |
Borrowings, maturity | 2026 |
Borrowings, interest rate description | variable |
ENI SpA | Euro Medium Term Notes Nineteen |  |
Borrowings |  |
Nominal value | € 100 |
Discount on bond issue and accrued expenses | 4 |
Borrowings | € 104 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2028 |
Borrowings, interest rate | 5.441% |
ENI SpA | Euro Medium Term Notes Twenty |  |
Borrowings |  |
Nominal value | € 75 |
Discount on bond issue and accrued expenses | 2 |
Borrowings | € 77 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2043 |
Borrowings, interest rate | 3.875% |
ENI SpA | Euro Medium Term Notes Twenty One |  |
Borrowings |  |
Nominal value | € 70 |
Discount on bond issue and accrued expenses | 1 |
Borrowings | € 71 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2032 |
Borrowings, interest rate | 4.00% |
ENI SpA | Euro Medium Term Notes Twenty Two |  |
Borrowings |  |
Nominal value | € 50 |
Discount on bond issue and accrued expenses | (1) |
Borrowings | € 49 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2031 |
Borrowings, interest rate | 4.80% |
ENI SpA | Euro Medium Term Notes Twenty Three |  |
Borrowings |  |
Nominal value | € 1,000 |
Discount on bond issue and accrued expenses | (1) |
Borrowings | € 999 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2028 |
Borrowings, interest rate | 0.375% |
ENI SpA | Euro Medium Term Notes Twenty Four |  |
Borrowings |  |
Nominal value | € 750 |
Discount on bond issue and accrued expenses | 14 |
Borrowings | € 764 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2027 |
Borrowings, interest rate | 3.625% |
ENI SpA | Other bonds One |  |
Borrowings |  |
Nominal value | € 905 |
Discount on bond issue and accrued expenses | 7 |
Borrowings | € 912 |
Borrowings, original currency | USD |
Borrowings, maturity | 2028 |
Borrowings, interest rate | 4.75% |
ENI SpA | Other bonds Two |  |
Borrowings |  |
Nominal value | € 905 |
Discount on bond issue and accrued expenses | 1 |
Borrowings | € 906 |
Borrowings, original currency | USD |
Borrowings, maturity | 2029 |
Borrowings, interest rate | 4.25% |
ENI SpA | Other bonds Four |  |
Borrowings |  |
Nominal value | € 317 |
Discount on bond issue and accrued expenses | 1 |
Borrowings | € 318 |
Borrowings, original currency | USD |
Borrowings, maturity | 2040 |
Borrowings, interest rate | 5.70% |
ENI SpA | Other bonds Six |  |
Borrowings |  |
Nominal value | € 2,000 |
Discount on bond issue and accrued expenses | 44 |
Borrowings | € 2,044 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2028 |
Borrowings, interest rate | 4.30% |
Eni USA Inc | Other bonds Three |  |
Borrowings |  |
Nominal value | € 362 |
Discount on bond issue and accrued expenses | 1 |
Borrowings | € 363 |
Borrowings, original currency | USD |
Borrowings, maturity | 2027 |
Borrowings, interest rate | 7.30% |
Eni PLT Wind 2022 SpA | Other bonds Five |  |
Borrowings |  |
Nominal value | € 17 |
Borrowings | € 17 |
Borrowings, original currency | EUR |
Borrowings, maturity | 2031 |
Borrowings, interest rate description | variable |

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