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Treasury risk management - Summary of Financial Assets are Subject to Offsetting, Enforceable Master Netting Arrangements and Similar Agreements (Details) - Derivative financial assets - EUR (€)
€ in Millions
Dec. 31, 2022
Dec. 31, 2021
Disclosure of offsetting of financial assets [line items]    
Gross amounts of recognised financial assets € 449 € 401
Gross amounts of recognised financial assets set off in the balance sheet (71) (112)
Net amounts of financial assets presented in the balance sheet 378 289
Financial instruments (272) (107)
Cash collateral received (81) (27)
Net amount € 25 € 155