Analysis Of Income And Expense [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||
| Material income and expense [abstract] | ||||||||||
| Interest income (expense) | — |
6,504,000,000
EUR
|
— | — | — |
6,278,000,000
EUR
|
— | — | — | — |
| Other operating income (expense) | — |
226,000,000
EUR
|
— | — | — |
378,000,000
EUR
|
— | — | — | — |
| Selling, general and administrative expense [abstract] | ||||||||||
| General and administrative expense | — |
2,531,000,000
EUR
|
— | — | — |
2,490,000,000
EUR
|
— | — | — | — |
| Revenue and other operating income | — |
8,861,000,000
EUR
|
— | — | — |
8,618,000,000
EUR
|
— | — | — | — |
| Operating expense | — |
5,467,000,000
EUR
|
— | — | — |
5,233,000,000
EUR
|
— | — | — | — |
| Fee and commission income (expense) [abstract] | ||||||||||
| Fee and commission income [abstract] | ||||||||||
| Fee and commission income | — |
2,414,000,000
EUR
|
— | — | — |
2,281,000,000
EUR
|
— | — | — | — |
| Fee and commission expense [abstract] | ||||||||||
| Fee and commission expense | — |
504,000,000
EUR
|
— | — | — |
498,000,000
EUR
|
— | — | — | — |
| Fee and commission income (expense) | — |
1,910,000,000
EUR
|
— | — | — |
1,782,000,000
EUR
|
— | — | — | — |
| Trading income (expense) [abstract] | ||||||||||
| Trading income (expense) | — |
283,000,000
EUR
|
— | — | — |
213,000,000
EUR
|
— | — | — | — |
| Expenses by nature [abstract] | ||||||||||
| Classes of employee benefits expense [abstract] | ||||||||||
| Employee benefits expense | — |
2,776,000,000
EUR
|
— | — | — |
2,492,000,000
EUR
|
— | — | — | — |
| Other expenses, by nature | — |
84,000,000
EUR
|
— | — | — |
106,000,000
EUR
|
— | — | — | — |
| Miscellaneous other comprehensive income [abstract] | ||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract] | ||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations | — |
61,000,000
EUR
|
— | — | — |
44,000,000
EUR
|
— | — | — | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — |
9,000,000
EUR
|
— | — | — |
41,000,000
EUR
|
— | — | — | — |
| Share of other comprehensive income of associates and joint ventures accounted for using equity method, before tax [abstract] | ||||||||||
| Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, before tax | — |
3,000,000
EUR
|
— | — | — |
10,000,000
EUR
|
— | — | — | — |
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss | — |
1,000,000
EUR
|
— | — | — |
2,000,000
EUR
|
— | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — |
50,000,000
EUR
|
— | — | — |
198,000,000
EUR
|
— | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||
| Comprehensive income |
0
EUR
|
2,308,000,000
EUR
|
2,403,000,000
EUR
|
94,000,000
EUR
|
2,308,000,000
EUR
|
3,224,000,000
EUR
|
2,697,000,000
EUR
|
527,000,000
EUR
|
0
EUR
|
3,224,000,000
EUR
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||
| Comprehensive income, attributable to owners of parent | — |
2,308,000,000
EUR
|
— | — | — |
3,224,000,000
EUR
|
— | — | — | — |