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Note 15 Hedges affected by the IBOR reform (Details)
€ in Millions
Dec. 31, 2021
EUR (€)
Cash flow hedges [member]  
IBOR Indices [Line Items]  
LIBOR USD € 1,056
LIBOR GBP 0
Other indices 0
Total indices effect 1,056
Fair value hedges [member]  
IBOR Indices [Line Items]  
LIBOR USD 7,939
LIBOR GBP 389
Other indices 583
Total indices effect € 8,910