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Financial instruments-fair values and risk management - Interest rate risk (Details) - Interest rate risk - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Percentage of increase in interest rate on earnings before tax 5.00%  
Decrease in earnings due to 1% increase in interest rate € (1,160) € 0