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Note 14 Securitized loans (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Securitized loans [Line Items]      
Securitized mortgage assets € 23,290 € 23,695 € 23,953
Other securitized assets 5,495 6,547 6,144
Total securitized loans € 28,784 € 30,242 € 30,098