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 |
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] | ||||||||||||||
| Revenue | — | — | — | — | — | — |
13,772,000,000
EUR
|
12,370,000,000
EUR
|
— | — | — | — | — | — |
| Material income and expense [abstract] | ||||||||||||||
| Investment income | — | — | — | — | — | — |
2,427,000,000
EUR
|
2,392,000,000
EUR
|
— | — | — | — | — | — |
| Fee and commission income (expense) [abstract] | ||||||||||||||
| Fee and commission income [abstract] | ||||||||||||||
| Other fee and commission income | — | — | — | — | — | — |
467,000,000
EUR
|
385,000,000
EUR
|
— | — | — | — | — | — |
| Fee and commission expense [abstract] | ||||||||||||||
| Fee and commission expense | — | — | — | — | — | — |
1,213,000,000
EUR
|
1,138,000,000
EUR
|
— | — | — | — | — | — |
| Expenses by nature [abstract] | ||||||||||||||
| Classes of employee benefits expense [abstract] | ||||||||||||||
| Employee benefits expense | — | — | — | — | — | — |
852,000,000
EUR
|
834,000,000
EUR
|
— | — | — | — | — | — |
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract] | ||||||||||||||
| Impairment loss (reversal of impairment loss) recognised in profit or loss | — | — | — | — | — | — |
41,000,000
EUR
|
172,000,000
EUR
|
— | — | — | — | — | — |
| Other expenses, by nature | — | — | — | — | — | — |
1,269,000,000
EUR
|
1,165,000,000
EUR
|
— | — | — | — | — | — |
| Expenses, by nature | — | — | — | — | — | — |
12,541,000,000
EUR
|
10,837,000,000
EUR
|
— | — | — | — | — | — |
| Miscellaneous other comprehensive income [abstract] | ||||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract] | ||||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations |
1,000,000
EUR
|
290,000,000
EUR
|
— | — | — |
290,000,000
EUR
|
291,000,000
EUR
|
356,000,000
EUR
|
355,000,000
EUR
|
1,000,000
EUR
|
355,000,000
EUR
|
— | — | — |
| Other comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — |
12,000,000
EUR
|
34,000,000
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 | — | — | — | — | — | — |
464,000,000
EUR
|
328,000,000
EUR
|
— | — | — | — | — | — |
| Share of other comprehensive income of associates and joint ventures accounted for using equity method, net of 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, net of tax | — | — | — | — | — | — |
168,000,000
EUR
|
144,000,000
EUR
|
— | — | — | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||
| Comprehensive income |
183,000,000
EUR
|
290,000,000
EUR
|
79,000,000
EUR
|
845,000,000
EUR
|
296,000,000
EUR
|
918,000,000
EUR
|
1,101,000,000
EUR
|
1,081,000,000
EUR
|
355,000,000
EUR
|
125,000,000
EUR
|
956,000,000
EUR
|
42,000,000
EUR
|
212,000,000
EUR
|
1,141,000,000
EUR
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — |
918,000,000
EUR
|
956,000,000
EUR
|
— | — | — | — | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — |
183,000,000
EUR
|
125,000,000
EUR
|
— | — | — | — | — | — |