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Note 38 Dividend income breakdown by headline (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dividend Income Breakdown By Headline [Line Items]      
Dividend income € 176 € 137 € 153
Financial assets at fair value through profit or loss, category [member]      
Dividend Income Breakdown By Headline [Line Items]      
Dividend income 64 15 26
Financial assets at fair value through other comprehensive income, category [member]      
Dividend Income Breakdown By Headline [Line Items]      
Dividend income € 112 € 122 € 126