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Costs - Compensation of key management personnel (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Costs      
Wages and salaries € 37 € 29 € 30
Post-employment benefits 3 3 2
Other long-term benefits 17 15 12
Indemnities upon termination of employment 9   21
Key management personnel compensation € 66 € 47 € 65