v3.25.4
Financial assets at fair value through other comprehensive income - Additional information (Details)
€ in Millions
12 Months Ended
Dec. 31, 2025
EUR (€)
Dec. 31, 2024
EUR (€)
Van Lanschot Kempen N.V    
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]    
Percentage of ownership interest acquired 0.176  
Interest held 20.30% 2.70%
Financial assets at FVOCI    
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]    
Exchange rate differences € (1,267) € 506
Negative revaluation 1,128
Changes in unrealised revaluations 166 509
Financial assets at FVOCI | - Equity securities    
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]    
Exchange rate differences (178) 62
Negative revaluation (19)
Changes in unrealised revaluations (156) 605
Financial assets at FVOCI | - Debt securities    
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]    
Changes in unrealised revaluations € 322 € (96)
Investment in Bank of Beijing    
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]    
Ownership interest held in equity based investments 13.00% 13.00%
Investment in Bank of Beijing | Financial assets at FVOCI    
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]    
Negative revaluation € (225) € 590