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Note 38 Other administrative expense (Details) - EUR (€)
€ in Millions
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Disclosure of Other administrative expense [Line Items]    
Technology and systems € 666 € 565
Communication expense 98 87
Advertising expense 129 101
Property Fixtures And Materials expense 216 190
Taxes Other Than Income Tax 170 201
Surveillance and security service expense 104 85
Other expenses 433 383
Other expense, by function € 1,815 € 1,612