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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, 2022
Jun. 30, 2021
Disclosure of Impairment or reversal of impairment on financial assets not measured at fair value through profit or loss [Line Items]    
Impairment on financial assets at fair value through other comprehensive income - debt securities € 50 € (8)
Impairment Financial Assets At Amortised Cost 1,391 1,587
Gain on recovery of loans and advances previously written off (192) (225)
Impairment loss on financial assets € 1,441 € 1,580