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INVENTORIES (Details) - EUR (€)
€ in Millions
Dec. 31, 2021
Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract]    
Finished goods € 225 € 149
Work in progress 551 280
Raw materials 226 118
Stores and supplies 95 80
Inventories write down (47) (45)
Total inventories € 1,050 € 582