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Note 34 Fees and commission expense (Details) - EUR (€)
€ in Millions
 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Fee and commission expense [Line Items]    
Demand accounts € 2 € 2
Credit and debit cards expenses 851 612
Transfers and other payment orders expenses 62 56
Commissions for selling insurance 33 25
Custody securities 48 25
Other fee and commission expense 318 275
Fee and commission expense € 1,314 € 996