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Income taxes (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Current taxes: |  |  |
Current taxes | € 1,800 | € 5,228 | € 5,370
Net deferred taxes: |  |  |
Net deferred taxes | 850 | 363 | 600
Income tax expense | 2,650 | 5,591 | 5,970
Italy |  |  |
Current taxes: |  |  |
Current taxes | 199 | 347 | 301
Net deferred taxes: |  |  |
Net deferred taxes | 672 | 599 | 130
Foreign current income tax expense | 169 |  |
Exploration & Production | Foreign (outside Italy) |  |  |
Current taxes: |  |  |
Current taxes | 1,517 | 4,729 | 4,906
Net deferred taxes: |  |  |
Net deferred taxes | 73 | (172) | 497
Other segments | Foreign (outside Italy) |  |  |
Current taxes: |  |  |
Current taxes | 84 | 152 | 163
Net deferred taxes: |  |  |
Net deferred taxes | € 105 | € (64) | € (27)

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