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Note 19 Tax recognized in total equity (Details) - EUR (€)
€ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Tax recognized in total equity [Line Items]      
Tax recognized in total equity € (207) € (273) € (170)
Debt securities [Member]      
Tax recognized in total equity [Line Items]      
Tax recognized in total equity (174) (230) (130)
Equity investments [member]      
Tax recognized in total equity [Line Items]      
Tax recognized in total equity € (33) € (43) € (40)