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Note 34 Fees and commission expense (Details) - EUR (€)
€ in Millions
6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Fee and commission expense [Line Items]    
Demand accounts € 2 € 2
Credit and debit cards expenses 1,022 851
Transfers and other payment orders expenses 75 62
Commissions for selling insurance 24 24
Custody securities 42 48
Other fee and commission expense 425 318
Fee and commission expense € 1,590 € 1,305