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Current and non-current inventories (Details) - EUR (€)
€ in Millions
Dec. 31, 2020
Dec. 31, 2019
Current and non-current inventories    
Raw and auxiliary materials and consumables € 706 € 950
Consumables for infrastructure and facility maintenance of perforation activities 1,580 1,477
Finished products and goods 1,603 2,284
Other 4 23
Inventories € 3,893 € 4,734