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Investments - Additional information (Details) bbl in Thousands, € in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 EUR (€) item bbl | Dec. 31, 2018 EUR (€) | Dec. 31, 2017 EUR (€)
Investments |  |  |
Additions and subscriptions | € 2,992 | € 120 |
Share of profit of equity-accounted investments | 161 | 409 |
Share of loss of equity-accounted investments | 184 | 430 |
Deduction for dividends | 1,138 | 50 |
Difference amount between purchase price of interest acquired and book value of corresponding fraction of net equity | € 72 |  |
Percentage of reasonable changes in cost of capital | 1.00% |  |
Other investments | € 929 | 919 | € 219
Nigeria LNG Ltd |  |  |
Investments |  |  |
Other investments | 657 | 651 |
Saudi European Petrochemical Co |  |  |
Investments |  |  |
Other investments | 146 | € 144 |
Lotte Versalis Elastomers Co Ltd |  |  |
Investments |  |  |
Additions and subscriptions | € 39 |  |
Associates | Abu Dhabi Oil Refining Co |  |  |
Investments |  |  |
Proportion of ownership interest acquired | 20.00% |  |
Additions and subscriptions | € 2,896 |  |
Number of refineries operated | item | 3 |  |
Refining capacity per day | bbl | 900 |  |
Incremental global refining capacity (as a percent) | 35.00% |  |
Associates | Angola LNG Ltd |  |  |
Investments |  |  |
Share of profit of equity-accounted investments | € 47 |  |
Associates | Novamont SpA |  |  |
Investments |  |  |
Difference amount between purchase price of interest acquired and book value of corresponding fraction of net equity | 43 |  |
Joint ventures | Var Energi AS |  |  |
Investments |  |  |
Share of profit of equity-accounted investments | 49 |  |
Deduction for dividends | 1,057 |  |
Increase (decrease) in book value of investments accounted using equity method | (980) |  |
Joint ventures | Saipem SpA |  |  |
Investments |  |  |
Share of profit of equity-accounted investments | 4 |  |
Joint ventures | Cardon IV SA |  |  |
Investments |  |  |
Share of loss of equity-accounted investments | € 90 |  |
Proportion of ownership interest in joint venture | 50.00% |  |
Joint ventures | Union Fenosa Gas SA |  |  |
Investments |  |  |
Difference amount between purchase price of interest acquired and book value of corresponding fraction of net equity | € 29 |  |

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