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Property, plant and equipment - Summary of Detailed Information About Lease And Own Assets (Details) - EUR (€)
€ in Millions
Dec. 31, 2023
Dec. 31, 2022
Property, plant and equipment [abstract]    
Owned assets € 9,377 € 9,416
Leased assets 1,330 1,354
Total € 10,707 € 10,770