v3.26.1
Note 7 Fair value of financial instruments by levels (Details) - EUR (€)
€ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financial instruments assets and liabilities [Line Items]    
Current financial assets at fair value through profit or loss, classified as held for trading € 154,695 € 123,185
Derivative financial assets held for trading 38,807 32,551
Equity instruments held at fair value through profit or loss, classified as held for trading 12,181 9,901
Debt instruments held for trading 36,343 30,846
Loans and advances at fair value through profit or loss, classified as held for trading 67,363 49,887
Financial assets at fair value through profit or loss, mandatorily measured at fair value 13,171 11,272
Equity instruments, mandatorily measured at fair value 12,253 10,539
Equity instruments, mandatorily measured at fair value 146 192
Loans and advances to customers at fair value through profit or loss mandatorily measured at fair value 772 541
Financial liabilities at fair value through profit or loss 1,007 1,006
Debt securities at fair value through profit or loss designated upon initial recognition or subsequently 1,007 1,006
Financial assets at fair value through other comprehensive income 62,205 58,809
Investments in equity instruments designated at fair value through other comprehensive income 790 1,360
Debt securities at fair value through other comprehensive income 60,669 57,001
Loans and advances to credit institutions at fair value through other comprehensive income 746 448
Derivative financial assets held for hedging 666 570
Current financial liabilities at fair value through profit or loss, classified as held for trading 119,389 91,917
Derivative financial liabilities held for trading 36,160 30,345
Short positions held for trading 13,751 13,100
Deposits at fair value through profit or loss that meet definition of held for trading 69,478 48,472
Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently 21,450 18,417
Deposits from credit institutions at fair value 0 0
Customer deposits at fair value 865 897
Debt securities at fair value through profit or loss designated upon initial recognition or subsequently 6,810 5,997
Other financial liabilities at fair value 13,774 11,524
Derivative financial liabilities held for hedging 2,102 1,933
Level 1 Of Fair Value Hierarchy [Member]    
Financial instruments assets and liabilities [Line Items]    
Current financial assets at fair value through profit or loss, classified as held for trading 35,728 30,045
Derivative financial assets held for trading 1,640 955
Equity instruments held at fair value through profit or loss, classified as held for trading 11,938 9,536
Debt instruments held for trading 22,150 19,555
Loans and advances at fair value through profit or loss, classified as held for trading 0 0
Financial assets at fair value through profit or loss, mandatorily measured at fair value 9,862 3,946
Equity instruments, mandatorily measured at fair value 9,785 3,817
Equity instruments, mandatorily measured at fair value 77 128
Loans and advances to customers at fair value through profit or loss mandatorily measured at fair value 0 0
Financial liabilities at fair value through profit or loss 1,000 1,004
Debt securities at fair value through profit or loss designated upon initial recognition or subsequently 1,000 1,004
Financial assets at fair value through other comprehensive income 54,306 52,134
Investments in equity instruments designated at fair value through other comprehensive income 455 1,015
Debt securities at fair value through other comprehensive income 53,828 51,095
Loans and advances to credit institutions at fair value through other comprehensive income 24 24
Derivative financial assets held for hedging 0 0
Current financial liabilities at fair value through profit or loss, classified as held for trading 15,195 14,129
Derivative financial liabilities held for trading 1,701 1,131
Short positions held for trading 13,494 12,999
Deposits at fair value through profit or loss that meet definition of held for trading 0 0
Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently 0 0
Deposits from credit institutions at fair value 0 0
Customer deposits at fair value 0 0
Debt securities at fair value through profit or loss designated upon initial recognition or subsequently 0 0
Other financial liabilities at fair value 0 0
Derivative financial liabilities held for hedging 0 0
Level 2 Of Fair Value Hierarchy [Member]    
Financial instruments assets and liabilities [Line Items]    
Current financial assets at fair value through profit or loss, classified as held for trading 115,958 90,885
Derivative financial assets held for trading 36,393 30,829
Equity instruments held at fair value through profit or loss, classified as held for trading 56 158
Debt instruments held for trading 13,596 10,686
Loans and advances at fair value through profit or loss, classified as held for trading 65,912 49,213
Financial assets at fair value through profit or loss, mandatorily measured at fair value 1,669 5,732
Equity instruments, mandatorily measured at fair value 1,225 5,341
Equity instruments, mandatorily measured at fair value 69 63
Loans and advances to customers at fair value through profit or loss mandatorily measured at fair value 375 328
Financial liabilities at fair value through profit or loss 7 2
Debt securities at fair value through profit or loss designated upon initial recognition or subsequently 7 2
Financial assets at fair value through other comprehensive income 4,739 4,760
Investments in equity instruments designated at fair value through other comprehensive income 95 107
Debt securities at fair value through other comprehensive income 4,385 4,652
Loans and advances to credit institutions at fair value through other comprehensive income 258 1
Derivative financial assets held for hedging 666 570
Current financial liabilities at fair value through profit or loss, classified as held for trading 102,535 76,334
Derivative financial liabilities held for trading 33,244 28,021
Short positions held for trading 251 102
Deposits at fair value through profit or loss that meet definition of held for trading 69,040 48,211
Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently 19,171 16,284
Deposits from credit institutions at fair value 0 0
Customer deposits at fair value 865 897
Debt securities at fair value through profit or loss designated upon initial recognition or subsequently 4,531 3,864
Other financial liabilities at fair value 13,774 11,524
Derivative financial liabilities held for hedging 2,087 1,926
Level 3 Of Fair Value Hierarchy [Member]    
Financial instruments assets and liabilities [Line Items]    
Current financial assets at fair value through profit or loss, classified as held for trading 3,009 2,254
Derivative financial assets held for trading 773 768
Equity instruments held at fair value through profit or loss, classified as held for trading 187 208
Debt instruments held for trading 598 605
Loans and advances at fair value through profit or loss, classified as held for trading 1,451 673
Financial assets at fair value through profit or loss, mandatorily measured at fair value 1,641 1,594
Equity instruments, mandatorily measured at fair value 1,243 1,380
Equity instruments, mandatorily measured at fair value 0 0
Loans and advances to customers at fair value through profit or loss mandatorily measured at fair value 397 213
Financial liabilities at fair value through profit or loss 0 0
Debt securities at fair value through profit or loss designated upon initial recognition or subsequently 0 0
Financial assets at fair value through other comprehensive income 3,160 1,915
Investments in equity instruments designated at fair value through other comprehensive income 240 237
Debt securities at fair value through other comprehensive income 2,456 1,255
Loans and advances to credit institutions at fair value through other comprehensive income 464 423
Derivative financial assets held for hedging 0 0
Current financial liabilities at fair value through profit or loss, classified as held for trading 1,659 1,454
Derivative financial liabilities held for trading 1,216 1,193
Short positions held for trading 6 0
Deposits at fair value through profit or loss that meet definition of held for trading 438 261
Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently 2,279 2,133
Deposits from credit institutions at fair value 0 0
Customer deposits at fair value 0 0
Debt securities at fair value through profit or loss designated upon initial recognition or subsequently 2,279 2,133
Other financial liabilities at fair value 0 0
Derivative financial liabilities held for hedging € 16 € 7