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Finance debts - Additional information (Details) € in Millions, t in Millions | 12 Months Ended
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Dec. 31, 2025 GW | Dec. 31, 2024 t | Dec. 31, 2021 EUR (€) € / EquityInstruments | Dec. 31, 2020 EUR (€)
Borrowings |  |  |  |
Increase (decrease) in finance debts |  |  | € 1,108 |
Debts subjected to covenants |  |  | 899 | € 1,051
Borrowings |  |  | 27,794 | 26,686
Changes in the scope of consolidation |  |  | 808 | 90
Lease liabilities assumptions |  |  | 1,102 | 808
Plenitude |  |  |  |
Borrowings |  |  |  |
Changes in the scope of consolidation |  |  | 474 |
Refining & Marketing |  |  |  |
Borrowings |  |  |  |
Changes in the scope of consolidation |  |  | 213 |
Uncommitted short-term borrowing facilities |  |  |  |
Borrowings |  |  |  |
Undrawn borrowing facilities |  |  | 6,207 | 7,183
Committed borrowing facilities |  |  |  |
Borrowings |  |  |  |
Undrawn borrowing facilities |  |  | 2,835 | 5,295
Over 12 months | Committed borrowing facilities |  |  |  |
Borrowings |  |  |  |
Undrawn borrowing facilities |  |  | € 2,820 | € 4,750
Minimum |  |  |  |
Borrowings |  |  |  |
Discount rates used to measure fair value of financial debt |  |  | (0.30%) | (0.50%)
Maximum |  |  |  |
Borrowings |  |  |  |
Discount rates used to measure fair value of financial debt |  |  | 1.70% | 1.40%
Sustainability-linked contracts with banks |  |  |  |
Borrowings |  |  |  |
Nominal value |  |  | € 4,850 |
Borrowings |  |  | 1,300 |
Sustainability-linked bond |  |  |  |
Borrowings |  |  |  |
Nominal value |  |  | 1,000 |
Borrowings |  |  | 998 |
Net carbon footprint upstream target | t |  | 7.4 |  |
Renewable energy capacity target | GW | 5 |  |  |
Ordinary Bonds |  |  |  |
Borrowings |  |  |  |
Nominal value |  |  | 18,850 |
Borrowings |  |  | 18,962 | € 19,420
Ordinary Bonds | Not later than 18 months |  |  |  |
Borrowings |  |  |  |
Borrowings |  |  | 703 |
Euro Medium Term Notes |  |  |  |
Borrowings |  |  |  |
Nominal value |  |  | 16,400 |
Maximum amount issuable |  |  | 20,000 |
Euro Medium Term Notes, Ordinary Bonds |  |  |  |
Borrowings |  |  |  |
Nominal value |  |  | 15,440 |
Borrowings |  |  | 15,542 |
Other Bonds |  |  |  |
Borrowings |  |  |  |
Nominal value |  |  | 3,410 |
Borrowings |  |  | 3,420 |
Convertible Bonds |  |  |  |
Borrowings |  |  |  |
Borrowings |  |  | € 399 | € 396
Bond conversion price | € / EquityInstruments |  |  | 17.62 |
Bond premium with respect to share reference price at date of issuance |  |  | 35.00% |
Bond expiry |  |  | 12 months |

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