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Note 38 Personnel expense (Details) - EUR (€)
€ in Millions
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Personnel expenses [Line Items]    
Wages and salaries € 2,001 € 1,823
Social security contributions 354 333
Post-employment benefit expense, defined contribution plans 41 37
Post-employment benefit expense, defined benefit plans 20 27
Other employee expense 171 152
Employee benefits expense € 2,587 € 2,371