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Note 38 Personnel expense (Details) - EUR (€)
€ in Millions
6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Personnel expenses [Line Items]    
Wages and salaries € 2,358 € 1,996
Social security contributions 410 354
Post-employment benefit expense, defined contribution plans 69 41
Post-employment benefit expense, defined benefit plans 23 20
Other employee expense 221 170
Employee benefits expense € 3,081 € 2,582