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Subsequent events - Narrative (Details)
12 Months Ended
Jan. 25, 2023
€ / shares
Dec. 31, 2022
€ / shares
Feb. 15, 2023
dividend
€ / shares
Dec. 31, 2021
€ / shares
Subsequent Event [Line Items]        
Dividends declared (in EUR per share)   € 5.80    
Dividends payable (in EUR per share)   € 1.69   € 5.50
Subsequent Event        
Subsequent Event [Line Items]        
Dividends declared (in EUR per share) € 5.80      
Dividends payable (in EUR per share)     € 1.37  
Number of interim dividends | dividend     2  
Subsequent Event | Interim Dividend        
Subsequent Event [Line Items]        
Dividends payable (in EUR per share)     € 1.37  
Subsequent Event | Final Dividend        
Subsequent Event [Line Items]        
Dividends payable (in EUR per share)     € 1.69