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Note 33 Dividend income breakdown by headline (Details) - EUR (€)
€ in Millions
6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Financial assets at fair value through profit or loss, category [member]    
Dividend Income Breakdown By Headline [Line Items]    
Dividend income € 10 € 13
Financial assets at fair value through other comprehensive income, category [member]    
Dividend Income Breakdown By Headline [Line Items]    
Dividend income € 63 € 63