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Right-of-use assets and lease liabilities (Details) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Right-of-use assets |  |  |
Net carrying amount - beginning of period | € 4,821 | € 4,643 |
Additions | 2,404 | 1,104 |
Depreciation | (1,013) | (928) | € (928)
Impairment | (18) | (59) | (47)
Reversals | 14 |  |
Currency translation differences | 267 | 253 |
Decreases in lease liabilities | 994 | 939 |
Changes in the scope of consolidation | (1,879) | 110 |
Other changes | (150) | (302) |
Net carrying amount - end of period | 4,446 | 4,821 | 4,643
Lessee's exposure arising from options for extension or termination of lease for office buildings | 1,180 |  |
Lessee's exposure arising from extension options related to service stations for sale of oil products | 121 |  |
Exploration & Production |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 3,195 |  |
Additions | 1,835 |  |
Net carrying amount - end of period | € 2,653 | 3,195 |
Exploration & Production | Ghana and Angola | Minimum |  |  |
Right-of-use assets |  |  |
Lease, term of contract | 17 years |  |
Exploration & Production | Ghana and Angola | Maximum |  |  |
Right-of-use assets |  |  |
Lease, term of contract | 18 years |  |
Exploration & Production | Mexico |  |  |
Right-of-use assets |  |  |
Additions | € 1,342 |  |
Global Gas & LNG Portfolio |  |  |
Right-of-use assets |  |  |
Additions | 82 |  |
Refining & Marketing and Chemical |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 765 |  |
Additions | 357 |  |
Net carrying amount - end of period | 800 | 765 |
Plenitude |  |  |
Right-of-use assets |  |  |
Changes in the scope of consolidation | 73 |  |
Plenitude | Deconsolidated Entities |  |  |
Right-of-use assets |  |  |
Changes in the scope of consolidation | 1,952 |  |
Corporate and Other activities |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 541 |  |
Additions | 91 |  |
Net carrying amount - end of period | 548 | 541 |
Upstream business |  |  |
Right-of-use assets |  |  |
Lessee's exposure arising from other extension options related to ancillary assets | 168 |  |
Floating production storage and offloading vessels (FPSO) |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 2,667 | 2,672 |
Additions | 1,342 |  |
Depreciation | (226) | (217) |
Currency translation differences | 239 | 213 |
Changes in the scope of consolidation | (1,878) |  |
Other changes | (2) | (1) |
Net carrying amount - end of period | 2,142 | 2,667 | 2,672
Drilling rig |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 183 | 244 |
Additions | 189 | 215 |
Depreciation | (197) | (170) |
Currency translation differences | 12 | 12 |
Changes in the scope of consolidation | (34) |  |
Other changes | (5) | (118) |
Net carrying amount - end of period | 148 | 183 | 244
Lease commitment, nominal value | 188 |  |
Drilling rig | Exploration & Production |  |  |
Right-of-use assets |  |  |
Additions | 189 |  |
Naval facilities and related logistic bases for oil and gas transportation |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 575 | 446 |
Additions | 530 | 583 |
Depreciation | (303) | (274) |
Impairment | (5) | (25) |
Reversals | 14 |  |
Currency translation differences | 10 | 11 |
Changes in the scope of consolidation | (39) |  |
Other changes | (100) | (166) |
Net carrying amount - end of period | 682 | 575 | 446
Motorway concessions and service stations |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 454 | 424 |
Additions | 76 | 104 |
Depreciation | (70) | (63) |
Impairment |  | (6) |
Currency translation differences | 3 | 3 |
Other changes | (6) | (8) |
Net carrying amount - end of period | 457 | 454 | 424
Motorway concessions and service stations | Refining & Marketing and Chemical |  |  |
Right-of-use assets |  |  |
Additions | 83 |  |
Oil and gas distribution facilities |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 14 | 11 |
Additions | 28 | 23 |
Depreciation | (13) | (11) |
Impairment | (5) | (14) |
Other changes | (5) | 5 |
Net carrying amount - end of period | 19 | 14 | 11
Oil and gas distribution facilities | Exploration & Production |  |  |
Right-of-use assets |  |  |
Additions | 223 |  |
Office buildings |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 618 | 652 |
Additions | 108 | 34 |
Depreciation | (130) | (122) |
Currency translation differences | 3 | 8 |
Changes in the scope of consolidation | (1) | (6) |
Other changes | (3) | 52 |
Net carrying amount - end of period | 595 | 618 | 652
Lease commitment, nominal value | € 437 |  |
Lease commitment, term of contract | 20 years |  |
Lease commitment, extension option | 6 years |  |
Vehicles |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | € 48 | 32 |
Additions | 21 | 40 |
Depreciation | (21) | (22) |
Impairment | (1) |  |
Other changes | (5) | (2) |
Net carrying amount - end of period | 42 | 48 | 32
Other |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 262 | 162 |
Additions | 110 | 105 |
Depreciation | (53) | (49) |
Impairment | (7) | (14) |
Currency translation differences |  | 6 |
Changes in the scope of consolidation | 73 | 116 |
Other changes | (24) | (64) |
Net carrying amount - end of period | 361 | 262 | € 162
Vessels |  |  |
Right-of-use assets |  |  |
Lease commitment, nominal value | 268 |  |
Vessels | Global Gas & LNG Portfolio |  |  |
Right-of-use assets |  |  |
Additions | 78 |  |
Vessels | Refining & Marketing and Chemical |  |  |
Right-of-use assets |  |  |
Additions | 252 |  |
Aircraft | Corporate and Other activities |  |  |
Right-of-use assets |  |  |
Additions | 54 |  |
Assets for staff activities | Corporate and Other activities |  |  |
Right-of-use assets |  |  |
Additions | 33 |  |
Gross carrying amount |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 7,403 |  |
Net carrying amount - end of period | 6,862 | 7,403 |
Gross carrying amount | Floating production storage and offloading vessels (FPSO) |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 3,366 |  |
Net carrying amount - end of period | 2,507 | 3,366 |
Gross carrying amount | Drilling rig |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 572 |  |
Net carrying amount - end of period | 516 | 572 |
Gross carrying amount | Naval facilities and related logistic bases for oil and gas transportation |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 1,268 |  |
Net carrying amount - end of period | 1,360 | 1,268 |
Gross carrying amount | Motorway concessions and service stations |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 666 |  |
Net carrying amount - end of period | 734 | 666 |
Gross carrying amount | Oil and gas distribution facilities |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 66 |  |
Net carrying amount - end of period | 87 | 66 |
Gross carrying amount | Office buildings |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 948 |  |
Net carrying amount - end of period | 1,010 | 948 |
Gross carrying amount | Vehicles |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 84 |  |
Net carrying amount - end of period | 86 | 84 |
Gross carrying amount | Other |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | 433 |  |
Net carrying amount - end of period | 562 | 433 |
Provisions for depreciation and impairment |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | (2,582) |  |
Net carrying amount - end of period | (2,416) | (2,582) |
Provisions for depreciation and impairment | Floating production storage and offloading vessels (FPSO) |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | (699) |  |
Net carrying amount - end of period | (365) | (699) |
Provisions for depreciation and impairment | Drilling rig |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | (389) |  |
Net carrying amount - end of period | (368) | (389) |
Provisions for depreciation and impairment | Naval facilities and related logistic bases for oil and gas transportation |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | (693) |  |
Net carrying amount - end of period | (678) | (693) |
Provisions for depreciation and impairment | Motorway concessions and service stations |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | (212) |  |
Net carrying amount - end of period | (277) | (212) |
Provisions for depreciation and impairment | Oil and gas distribution facilities |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | (52) |  |
Net carrying amount - end of period | (68) | (52) |
Provisions for depreciation and impairment | Office buildings |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | (330) |  |
Net carrying amount - end of period | (415) | (330) |
Provisions for depreciation and impairment | Vehicles |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | (36) |  |
Net carrying amount - end of period | (44) | (36) |
Provisions for depreciation and impairment | Other |  |  |
Right-of-use assets |  |  |
Net carrying amount - beginning of period | (171) |  |
Net carrying amount - end of period | € (201) | € (171) |

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- Definition The amount of impairment loss recognized in profit or loss for right-of-use assets. Always reported positively in XBRL. + References No definition available. + Details
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- Definition The increase (decrease) in right-of-use assets resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. + References No definition available. + Details
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- Definition The increase (decrease) in right-of-use assets resulting from changes that the entity does not separately disclose in the same statement or note. + References No definition available. + Details
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- Definition Amount of future cash outflows potentially due not reflected in the measurements of lease liabilities due to options for the extension or termination of the lease. + References No definition available. + Details
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