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Income taxes (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Current taxes: |  |  |
Current taxes | € 4,205 | € 1,800 | € 5,228
Net deferred taxes: |  |  |
Net deferred taxes | 640 | 850 | 363
Income tax expense | 4,845 | 2,650 | 5,591
Effect of additional Corporate Tax | 97 |  |
Italy |  |  |
Current taxes: |  |  |
Current taxes | 439 | 199 | 347
Net deferred taxes: |  |  |
Net deferred taxes | (45) | 672 | 599
Foreign current income tax expense | 214 |  |
Effect of additional Corporate Tax | 97 |  |
Exploration & Production | Foreign (outside Italy) |  |  |
Current taxes: |  |  |
Current taxes | 3,609 | 1,517 | 4,729
Net deferred taxes: |  |  |
Net deferred taxes | 552 | 73 | (172)
Other segments | Foreign (outside Italy) |  |  |
Current taxes: |  |  |
Current taxes | 157 | 84 | 152
Net deferred taxes: |  |  |
Net deferred taxes | € 133 | € 105 | € (64)

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