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Note 38 Other administrative expense (Details) - EUR (€)
€ in Millions
6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Disclosure of Other administrative expense [Line Items]    
Technology and systems € 799 € 663
Communication expense 107 98
Advertising expense 164 122
Property Fixtures And Materials expense 249 216
Taxes Other Than Income Tax 228 170
Surveillance and security service expense 120 104
Other expenses 515 418
Other expense, by function € 2,181 € 1,790