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Note 32 Leverage Ratio (Details) - EUR (€)
€ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Leverage ratio [Line Items]      
Tier 1 € 56,822 € 52,150 € 47,931
Exposure to leverage ratio € 834,488 € 797,888 € 737,990
Leverage ratio 6.81% 6.54% 6.49%