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 |
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 |
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] | ||||||||||||||||
| Revenue [abstract] | ||||||||||||||||
| Interest income | — |
2,312,000,000
EUR
|
— | — | — | — | — | — | — |
2,312,000,000
EUR
|
— | — | — | — | — | — |
| Dividend income | — |
33,000,000
EUR
|
— | — | — | — | — | — | — |
35,000,000
EUR
|
— | — | — | — | — | — |
| Material income and expense [abstract] | ||||||||||||||||
| Interest expense | — |
4,702,000,000
EUR
|
— | — | — | — | — | — | — |
4,914,000,000
EUR
|
— | — | — | — | — | — |
| Interest income (expense) | — |
5,779,000,000
EUR
|
— | — | — | — | — | — | — |
5,596,000,000
EUR
|
— | — | — | — | — | — |
| Other operating income (expense) | — |
84,000,000
EUR
|
— | — | — | — | — | — | — |
72,000,000
EUR
|
— | — | — | — | — | — |
| Selling, general and administrative expense [abstract] | ||||||||||||||||
| General and administrative expense | — |
3,786,000,000
EUR
|
— | — | — | — | — | — | — |
3,837,000,000
EUR
|
— | — | — | — | — | — |
| Fee and commission income (expense) [abstract] | ||||||||||||||||
| Fee and commission income [abstract] | ||||||||||||||||
| Fee and commission income | — |
3,680,000,000
EUR
|
— | — | — | — | — | — | — |
3,875,000,000
EUR
|
— | — | — | — | — | — |
| Fee and commission expense [abstract] | ||||||||||||||||
| Fee and commission expense | — |
1,042,000,000
EUR
|
— | — | — | — | — | — | — |
969,000,000
EUR
|
— | — | — | — | — | — |
| Fee and commission income (expense) | — |
2,638,000,000
EUR
|
— | — | — | — | — | — | — |
2,906,000,000
EUR
|
— | — | — | — | — | — |
| Expenses by nature [abstract] | ||||||||||||||||
| Classes of employee benefits expense [abstract] | ||||||||||||||||
| Employee benefits expense | — |
2,053,000,000
EUR
|
— | — | — | — | — | — | — |
2,169,000,000
EUR
|
— | — | — | — | — | — |
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract] | ||||||||||||||||
| Depreciation and amortisation expense [abstract] | ||||||||||||||||
| Depreciation and amortisation expense | — |
472,000,000
EUR
|
— | — | — | — | — | — | — |
465,000,000
EUR
|
— | — | — | — | — | — |
| Disclosure of attribution of expenses by nature to their function [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of attribution of expenses by nature to their function [abstract] | ||||||||||||||||
| Disclosure of attribution of expenses by nature to their function [line items] | ||||||||||||||||
| Miscellaneous other comprehensive income [abstract] | ||||||||||||||||
| Other comprehensive income, attributable to non-controlling interests | — |
9,000,000
EUR
|
— | — | — | — | — | — | — |
31,000,000
EUR
|
— | — | — | — | — | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||||
| Share of profit (loss) of associates accounted for using equity method | — |
47,000,000
EUR
|
— | — | — | — | — | — | — |
85,000,000
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 not be reclassified to profit or loss, before tax | — |
3,000,000
EUR
|
— | — | — | — | — | — | — |
2,000,000
EUR
|
— | — | — | — | — | — |
| 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 | — |
59,000,000
EUR
|
— | — | — | — | — | — | — |
6,000,000
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 | — |
6,000,000
EUR
|
— | — | — | — | — | — | — |
1,000,000
EUR
|
— | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — |
8,000,000
EUR
|
— | — | — | — | — | — | — |
11,000,000
EUR
|
— | — | — | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||
| Comprehensive income |
192,000,000
EUR
|
1,024,000,000
EUR
|
0
EUR
|
0
EUR
|
0
EUR
|
325,000,000
EUR
|
1,157,000,000
EUR
|
832,000,000
EUR
|
0
EUR
|
1,518,000,000
EUR
|
0
EUR
|
1,029,000,000
EUR
|
161,000,000
EUR
|
2,386,000,000
EUR
|
0
EUR
|
1,357,000,000
EUR
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||
| Comprehensive income, attributable to owners of parent | — |
832,000,000
EUR
|
— | — | — | — | — | — | — |
1,357,000,000
EUR
|
— | — | — | — | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — |
192,000,000
EUR
|
— | — | — | — | — | — | — |
161,000,000
EUR
|
— | — | — | — | — | — |