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Inventories, net - Inventories (Detail) - EUR (€)
€ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Inventory Disclosure [Abstract]      
Raw materials € 4,057.3 € 3,198.9  
Work-in-process 3,388.1 2,163.9  
Finished products 2,098.5 2,303.8  
Inventories, gross 9,543.9 7,666.6  
Inventory reserves (693.2) (466.9) € (418.0)
Inventories, net € 8,850.7 € 7,199.7