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Impact of adoption of IFRS 9 for hedge accounting (Details) - EUR (€)
€ in Millions
Dec. 31, 2021
Jan. 01, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of initial application of standards or interpretations [line items]          
Reserve of cash flow hedges € 10.5 € (21.7) € (24.5) € (13.2) € 8.5
Reserve of change in value of forward elements of forward contracts   (4.4) 0.0    
Other reserves   (26.1) (24.5)    
Translation reserve € 105.1 86.3 € 84.7    
Increase (decrease) due to changes in accounting policy [member]          
Disclosure of initial application of standards or interpretations [line items]          
Reserve of cash flow hedges   2.8      
Reserve of change in value of forward elements of forward contracts   (4.4)      
Other reserves   (1.6)      
Translation reserve   € 1.6