v3.25.4
Note 15 Hedged items in fair value hedges (Details) - Fair value hedges [member] - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Hedged items in fair value hedges [Line Items]    
Notional amount € 69,514 € 59,371
Hedged item 68,884 58,230
Accumulated fair value hedge adjustment on hedged item included in carrying amount (507) (329)
Hedging instrument, assets 357 330
Hedging instrument, liabilities 303 437
Financial assets at fair value through other comprehensive income, class [member]    
Hedged items in fair value hedges [Line Items]    
Notional amount 7,948 9,559
Hedged item 7,246 8,157
Accumulated fair value hedge adjustment on hedged item included in carrying amount (346) (409)
Hedging instrument, assets 43 109
Hedging instrument, liabilities 12 29
Financial assets at fair value through other comprehensive income, class [member] | Debt securities [Member]    
Hedged items in fair value hedges [Line Items]    
Notional amount 7,632 9,559
Hedged item 6,945 8,157
Accumulated fair value hedge adjustment on hedged item included in carrying amount (336) (409)
Hedging instrument, assets 22 109
Hedging instrument, liabilities 6 29
Financial assets at fair value through other comprehensive income, class [member] | Equity instruments [Domain]    
Hedged items in fair value hedges [Line Items]    
Notional amount 250  
Hedged item 231  
Accumulated fair value hedge adjustment on hedged item included in carrying amount (14)  
Hedging instrument, assets 18  
Hedging instrument, liabilities 1  
Financial assets at fair value through other comprehensive income, class [member] | Loans and receivables, category [member]    
Hedged items in fair value hedges [Line Items]    
Notional amount 66  
Hedged item 71  
Accumulated fair value hedge adjustment on hedged item included in carrying amount 4  
Hedging instrument, assets 2  
Hedging instrument, liabilities 5  
Financial assets at amortised cost, class [member]    
Hedged items in fair value hedges [Line Items]    
Notional amount 14,190 4,934
Hedged item 13,993 4,792
Accumulated fair value hedge adjustment on hedged item included in carrying amount (163) (16)
Hedging instrument, assets 33 49
Hedging instrument, liabilities 165 116
Financial assets at amortised cost, class [member] | Debt securities [Member]    
Hedged items in fair value hedges [Line Items]    
Notional amount 8,758 3,860
Hedged item 8,619 3,757
Accumulated fair value hedge adjustment on hedged item included in carrying amount (86) (48)
Hedging instrument, assets 19 47
Hedging instrument, liabilities 158 102
Financial assets at amortised cost, class [member] | Loans and receivables, category [member]    
Hedged items in fair value hedges [Line Items]    
Notional amount 5,432 1,074
Hedged item 5,375 1,035
Accumulated fair value hedge adjustment on hedged item included in carrying amount (77) 32
Hedging instrument, assets 14 2
Hedging instrument, liabilities 7 14
Financial liabilities at amortised cost, class [member]    
Hedged items in fair value hedges [Line Items]    
Notional amount 47,376 44,878
Hedged item 47,645 45,281
Accumulated fair value hedge adjustment on hedged item included in carrying amount 2 96
Hedging instrument, assets 281 171
Hedging instrument, liabilities 126 292
Financial liabilities at amortised cost, class [member] | Debt securities [Member]    
Hedged items in fair value hedges [Line Items]    
Notional amount 42,287 42,209
Hedged item 42,408 42,536
Accumulated fair value hedge adjustment on hedged item included in carrying amount 48 172
Hedging instrument, assets 218 74
Hedging instrument, liabilities 125 281
Financial liabilities at amortised cost, class [member] | Deposit liabilities [Member]    
Hedged items in fair value hedges [Line Items]    
Notional amount 5,089 2,669
Hedged item 5,237 2,745
Accumulated fair value hedge adjustment on hedged item included in carrying amount (46) (76)
Hedging instrument, assets 63 97
Hedging instrument, liabilities € 1 € 11