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Intangible assets, Property, plant and equipment and Right-of-use assets - Additional Information (Detail) - EUR (€)
€ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Statements [Line Items]        
Purchase of property, plant and equipment € 1.1 € 1.8 € 2.2 € 2.4
Rental Land        
Statements [Line Items]        
Addition to right-of-use assets     € 6.7