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Note 38 Dividend income breakdown by headline (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dividend Income Breakdown By Headline [Line Items]      
Dividend income € 123 € 176 € 137
Financial assets at fair value through profit or loss, category [member]      
Dividend Income Breakdown By Headline [Line Items]      
Dividend income 15 64 15
Financial assets at fair value through other comprehensive income, category [member]      
Dividend Income Breakdown By Headline [Line Items]      
Dividend income € 108 € 112 € 122