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Income taxes (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Current taxes: |  |  |
Current taxes: | € 5,370 | € 4,021 | € 2,999
Net deferred taxes: |  |  |
Net deferred taxes: | 600 | (554) | (1,063)
Income Tax Expense | 5,970 | 3,467 | 1,936
Italian subsidiaries [Member] | In Italy [Member] |  |  |
Current taxes: |  |  |
Current taxes: | 301 | 712 | 195
Net deferred taxes: |  |  |
Net deferred taxes: | 130 | (464) | (243)
Subsidiaries Of The Exploration And Production Segment [Member] | Subsidiaries outside Italy [Member] |  |  |
Current taxes: |  |  |
Current taxes: | 4,906 | 3,167 | 2,671
Net deferred taxes: |  |  |
Net deferred taxes: | 497 | (162) | (813)
Other Subsidiaries [Member] | Subsidiaries outside Italy [Member] |  |  |
Current taxes: |  |  |
Current taxes: | 163 | 142 | 133
Net deferred taxes: |  |  |
Net deferred taxes: | € (27) | € 72 | € (7)

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