Analysis Of Income And Expense [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||||||||||||||
| Interest income | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,128,000.0
EUR
|
— |
1,113,700.0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividend income | — | — | — | — | — | — | — | — | — | — | — | — | — |
177,000,000.0
EUR
|
— |
28,000,000.0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Material income and expense [abstract] | ||||||||||||||||||||||||||||||
| Interest expense | — | — | — | — | — | — | — | — | — | — | — | — | — |
2,074,000,000.0
EUR
|
— |
2,011,000,000.0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Operating expense | — | — | — | — | — | — | — | — | — | — | — | — | — |
4,901,000,000.0
EUR
|
— |
5,240,000,000.0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Fee and commission income (expense) [abstract] | ||||||||||||||||||||||||||||||
| Fee and commission income [abstract] | ||||||||||||||||||||||||||||||
| Fee and commission income | — | — | — | — | — | — | — | — | — | — | — | — | — |
3,530,000,000.0
EUR
|
— |
3,291,000,000.0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Fee and commission expense [abstract] | ||||||||||||||||||||||||||||||
| Fee and commission expense | — | — | — | — | — | — | — | — | — | — | — | — | — |
709,000,000.0
EUR
|
— |
743,000,000.0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Fee and commission income (expense) | — | — | — | — | — | — | — | — | — | — | — | — | — |
2,821,000,000.0
EUR
|
— |
2,548,000,000.0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Expenses by nature [abstract] | ||||||||||||||||||||||||||||||
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract] | ||||||||||||||||||||||||||||||
| Depreciation and amortisation expense [abstract] | ||||||||||||||||||||||||||||||
| Depreciation and amortisation expense | — | — | — | — | — | — | — | — | — | — | — | — | — |
685,000,000.0
EUR
|
— |
810,000,000.0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other expenses, by nature | — | — | — | — | — | — | — | — | — | — | — | — | — |
2,482,000,000.0
EUR
|
— |
1,525,000,000.0
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, 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 | — | — | — | — | — | — | — | — | — | — | — | — | — |
120,000,000.0
EUR
|
— |
181,000,000.0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income, before tax, hedges of net investments in foreign operations | — | — | — | — | — | — | — | — | — | — | — | — | — |
103,000,000.0
EUR
|
— |
155,000,000.0
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 | — | — | — | — | — | — | — | — | — | — | — | — | — |
38,000,000.0
EUR
|
— |
11,000,000.0
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 | — | — | — | — | — | — | — | — | — | — | — | — | — |
25,000,000.0
EUR
|
— |
8,000,000.0
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 | — | — | — | — | — | — | — | — | — | — | — | — | — |
247,000,000.0
EUR
|
— |
138,000,000.0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — | — | — | — | — | — | — | — | — | — | — | — | — |
153,000,000.0
EUR
|
— |
383,000,000.0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||||||||||||||
| Comprehensive income |
2,000,000.0
EUR
|
208,000,000.0
EUR
|
5,092,000,000.0
EUR
|
238,000,000.0
EUR
|
–
EUR
|
0.0
EUR
|
–
EUR
|
111,000,000.0
EUR
|
120,000,000.0
EUR
|
103,000,000.0
EUR
|
25,000,000.0
EUR
|
637,000,000.0
EUR
|
–
EUR
|
5,094,000,000.0
EUR
|
4,799,000,000.0
EUR
|
3,574,000,000.0
EUR
|
103,000,000.0
EUR
|
2,852,000,000.0
EUR
|
299,000,000.0
EUR
|
979,000,000.0
EUR
|
155,000,000.0
EUR
|
8,000,000.0
EUR
|
162,000,000.0
EUR
|
–
EUR
|
–
EUR
|
181,000,000.0
EUR
|
3,000,000.0
EUR
|
2,000,000.0
EUR
|
3,571,000,000.0
EUR
|
–
EUR
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — | — | — | — | — | — | — | — |
5,092,000,000.0
EUR
|
— |
3,571,000,000.0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — | — | — | — | — | — | — | — |
2,000,000.0
EUR
|
— |
3,000,000.0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |