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Property, plant and equipment Disclosure Depreciation of Right of use Assets (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of quantitative information about right-of-use assets [line items]      
Depreciation, right-of-use assets € 16.6 € 15.7 € 16.1
Land and buildings [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Depreciation, right-of-use assets 10.9 10.6 10.7
Property, plant and equipment [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Depreciation, right-of-use assets 5.5 4.9 5.2
Computer equipment [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Depreciation, right-of-use assets € 0.2 € 0.2 € 0.2