v3.25.2
Financial assets - Disclosure of gross exposure by stages of impairment (Details) - EUR (€)
€ in Millions
Jun. 30, 2025
Dec. 31, 2024
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk € 1,243,289 € 1,313,332
Other assets | Next 12 months    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 1,134,518 1,194,011
Other assets | Lifetime expected credit losses    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 77,658 85,052
Impaired assets | Lifetime expected credit losses    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 31,113 34,269
Financial assets at fair value through other comprehensive income    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 73,628 87,857
Financial assets at fair value through other comprehensive income | Debt instruments    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 60,935 76,568
Financial assets at fair value through other comprehensive income | Loans and advances    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 12,693 11,289
Financial assets at fair value through other comprehensive income | Credit institutions    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 304 363
Financial assets at fair value through other comprehensive income | Loans and advances to customers    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 12,389 10,926
Financial assets at fair value through other comprehensive income | Other assets | Next 12 months    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 73,048 87,135
Financial assets at fair value through other comprehensive income | Other assets | Next 12 months | Debt instruments    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 60,924 76,521
Financial assets at fair value through other comprehensive income | Other assets | Next 12 months | Loans and advances    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 12,124 10,614
Financial assets at fair value through other comprehensive income | Other assets | Next 12 months | Credit institutions    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 304 363
Financial assets at fair value through other comprehensive income | Other assets | Next 12 months | Loans and advances to customers    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 11,820 10,251
Financial assets at fair value through other comprehensive income | Other assets | Lifetime expected credit losses    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 399 469
Financial assets at fair value through other comprehensive income | Other assets | Lifetime expected credit losses | Debt instruments    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 11 41
Financial assets at fair value through other comprehensive income | Other assets | Lifetime expected credit losses | Loans and advances    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 388 428
Financial assets at fair value through other comprehensive income | Other assets | Lifetime expected credit losses | Credit institutions    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 0 0
Financial assets at fair value through other comprehensive income | Other assets | Lifetime expected credit losses | Loans and advances to customers    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 388 428
Financial assets at fair value through other comprehensive income | Impaired assets | Lifetime expected credit losses    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 181 253
Financial assets at fair value through other comprehensive income | Impaired assets | Lifetime expected credit losses | Debt instruments    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 0 6
Financial assets at fair value through other comprehensive income | Impaired assets | Lifetime expected credit losses | Loans and advances    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 181 247
Financial assets at fair value through other comprehensive income | Impaired assets | Lifetime expected credit losses | Credit institutions    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 0 0
Financial assets at fair value through other comprehensive income | Impaired assets | Lifetime expected credit losses | Loans and advances to customers    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 181 247
Financial assets at amortised cost    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 1,169,661 1,225,475
Financial assets at amortised cost | Debt instruments    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 120,011 121,244
Financial assets at amortised cost | Loans and advances    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 1,049,650 1,104,231
Financial assets at amortised cost | Credit institutions    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 55,350 55,542
Financial assets at amortised cost | Loans and advances to customers    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 977,494 1,032,510
Financial assets at amortised cost | Central Banks    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 16,806 16,179
Financial assets at amortised cost | Other assets | Next 12 months    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 1,061,470 1,106,876
Financial assets at amortised cost | Other assets | Next 12 months | Debt instruments    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 118,138 119,993
Financial assets at amortised cost | Other assets | Next 12 months | Loans and advances    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 943,332 986,883
Financial assets at amortised cost | Other assets | Next 12 months | Credit institutions    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 55,319 55,542
Financial assets at amortised cost | Other assets | Next 12 months | Loans and advances to customers    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 871,207 915,162
Financial assets at amortised cost | Other assets | Next 12 months | Central Banks    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 16,806 16,179
Financial assets at amortised cost | Other assets | Lifetime expected credit losses    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 77,259 84,583
Financial assets at amortised cost | Other assets | Lifetime expected credit losses | Debt instruments    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 1,116 556
Financial assets at amortised cost | Other assets | Lifetime expected credit losses | Loans and advances    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 76,143 84,027
Financial assets at amortised cost | Other assets | Lifetime expected credit losses | Credit institutions    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 11 0
Financial assets at amortised cost | Other assets | Lifetime expected credit losses | Loans and advances to customers    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 76,132 84,027
Financial assets at amortised cost | Other assets | Lifetime expected credit losses | Central Banks    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 0 0
Financial assets at amortised cost | Impaired assets | Lifetime expected credit losses    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 30,932 34,016
Financial assets at amortised cost | Impaired assets | Lifetime expected credit losses | Debt instruments    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 757 695
Financial assets at amortised cost | Impaired assets | Lifetime expected credit losses | Loans and advances    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 30,175 33,321
Financial assets at amortised cost | Impaired assets | Lifetime expected credit losses | Credit institutions    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 20 0
Financial assets at amortised cost | Impaired assets | Lifetime expected credit losses | Loans and advances to customers    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk 30,155 33,321
Financial assets at amortised cost | Impaired assets | Lifetime expected credit losses | Central Banks    
Disclosure of reconciliation of changes in loss allowance of financial instruments    
Maximum exposure to credit risk € 0 € 0