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Note 41 Impairment or reversal of impairment on financial assets not measured at fair value through profit or loss or net gains by modification (Details) - EUR (€)
€ in Millions
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Disclosure of Impairment or reversal of impairment on financial assets not measured at fair value through profit or loss [Line Items]    
Impairment Financial Assets Measured At Fair Value Through Other Comprehensive Income € 35 € 50
Impairment financial assets measured at cost 1,958 1,391
Gain on recovery of loans and advances previously written off (174) (192)
Impairment loss on financial assets € 1,993 € 1,441