Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2021-12-31 |
As at 2020-12-31 |
|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Intangible assets and goodwill [abstract] | ||
| Intangible assets and goodwill |
127,000,000
EUR
|
128,000,000
EUR
|
| Investments accounted for using equity method [abstract] | ||
| Investments accounted for using equity method |
564,000,000
EUR
|
593,000,000
EUR
|
| Categories of financial assets [abstract] | ||
| Financial assets at fair value through profit or loss [abstract] | ||
| Financial assets at fair value through profit or loss, mandatorily measured at fair value | — | — |
| Financial assets at fair value through profit or loss, classified as held for trading |
1,155,000,000
EUR
|
1,315,000,000
EUR
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | ||
| Non-current assets or disposal groups classified as held for sale |
89,000,000
EUR
|
254,000,000
EUR
|
| Miscellaneous assets [abstract] | ||
| Derivative financial assets |
3,785,000,000
EUR
|
6,381,000,000
EUR
|
| Loans and advances | — | — |
| Loans and advances to banks |
2,801,000,000
EUR
|
3,394,000,000
EUR
|
| Loans and advances to customers | — | — |
| Loans to consumers |
10,518,000,000
EUR
|
10,937,000,000
EUR
|
| Cash and bank balances at central banks |
66,865,000,000
EUR
|
60,190,000,000
EUR
|
| Other assets |
4,263,000,000
EUR
|
4,925,000,000
EUR
|
| Categories of financial liabilities [abstract] | ||
| Financial liabilities at fair value through profit or loss [abstract] | ||
| Financial liabilities at fair value through profit or loss that meet definition of held for trading |
687,000,000
EUR
|
563,000,000
EUR
|
| Miscellaneous liabilities [abstract] | ||
| Derivative financial liabilities |
4,344,000,000
EUR
|
7,391,000,000
EUR
|
| Deposit liabilities | — | — |
| Deposits from banks |
38,076,000,000
EUR
|
36,719,000,000
EUR
|
| Deposits from customers [abstract] | ||
| Balances on term deposits from customers |
18,780,000,000
EUR
|
19,037,000,000
EUR
|
| Balances on demand deposits from customers |
98,790,000,000
EUR
|
107,534,000,000
EUR
|
| Balances on current accounts from customers |
132,983,000,000
EUR
|
111,033,000,000
EUR
|
| Balances on other deposits from customers |
665,000,000
EUR
|
966,000,000
EUR
|
| Subordinated liabilities [abstract] | ||
| Subordinated liabilities |
7,549,000,000
EUR
|
8,069,000,000
EUR
|
| Debt instruments issued |
59,688,000,000
EUR
|
66,949,000,000
EUR
|
| Other liabilities |
4,757,000,000
EUR
|
4,053,000,000
EUR
|
| Issued capital [abstract] | ||
| Issued capital |
940,000,000
EUR
|
940,000,000
EUR
|
| Accumulated other comprehensive income [abstract] | ||
| Accumulated other comprehensive income |
1,227,000,000
EUR
|
1,733,000,000
EUR
|
| Net assets (liabilities) [abstract] | ||
| Assets |
399,113,000,000
EUR
|
395,623,000,000
EUR
|
| Liabilities |
377,114,000,000
EUR
|
374,634,000,000
EUR
|
| Assets less current liabilities [abstract] |