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Investments - Additional information (Details) - EUR (€) € in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Investments |  |  |
Additions and subscriptions | € 662 | € 275 |
Divestments and reimbursements | 385 | 4 |
Share of loss of equity-accounted investments | 1,294 | 1,733 |
Deduction for dividends | € 627 | 314 |
Percentage of reasonable changes in cost of capital | 1.00% |  |
Payment of advances for the purchase of equity investments | € 120 |  |
Change in the fair value with effect to OCI | 105 | 24 |
Other investments | 1,294 | 957 | € 929
Nigeria LNG Ltd |  |  |
Investments |  |  |
Other investments | 637 | 579 |
Saudi European Petrochemical Co |  |  |
Investments |  |  |
Other investments | 124 | 115 |
Novamont SpA |  |  |
Investments |  |  |
Change in the fair value with effect to OCI | 106 |  |
Other investments | 183 | € 77 |
Associates | Angola LNG Ltd |  |  |
Investments |  |  |
Divestments and reimbursements | 130 |  |
Associates | Abu Dhabi Oil Refining Co (Takreer) |  |  |
Investments |  |  |
Share of loss of equity-accounted investments | 362 |  |
Joint ventures | UK Dogger Bank |  |  |
Investments |  |  |
Additions and subscriptions | € 480 |  |
Proportion of ownership interest acquired | 20.00% |  |
Joint ventures | Union Fenosa Gas SA |  |  |
Investments |  |  |
Divestments and reimbursements | € 232 |  |
Joint ventures | Saipem SpA |  |  |
Investments |  |  |
Share of loss of equity-accounted investments | 752 |  |
Joint ventures | Cardon IV SA |  |  |
Investments |  |  |
Share of loss of equity-accounted investments | € 78 |  |
Proportion of ownership interest in joint venture | 50.00% |  |
Joint ventures | Petro Junin SA |  |  |
Investments |  |  |
Share of loss of equity-accounted investments | € 51 |  |
Joint ventures | Var Energi AS |  |  |
Investments |  |  |
Deduction for dividends | 561 |  |
Joint ventures | Doggerbank Offshore Wind Farm Project 1 Holdco Ltd |  |  |
Investments |  |  |
Difference amount between purchase price of interest acquired and book value of corresponding fraction of net equity | 487 |  |
Joint ventures | Doggerbank Offshore Wind Farm Project 2 Holdco Ltd |  |  |
Investments |  |  |
Difference amount between purchase price of interest acquired and book value of corresponding fraction of net equity | € 483 |  |

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