Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
1 749
EUR
|
1 551
EUR
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | |||
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements |
37,000,000
EUR
|
24,000,000
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 |
8 850
EUR
|
8 695
EUR
|
— |
| Financial assets at fair value through profit or loss |
25 422
EUR
|
24 248
EUR
|
— |
| Financial assets at fair value through other comprehensive income [abstract] | |||
| Financial assets at fair value through other comprehensive income |
15 824
EUR
|
18 451
EUR
|
— |
| Financial assets at amortised cost |
240 128
EUR
|
243 527
EUR
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
63 554
EUR
|
47 794
EUR
|
29 118
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 or as held for distribution to owners |
10 001
EUR
|
19,000,000
EUR
|
— |
| Miscellaneous assets [abstract] | |||
| Restricted cash and cash equivalents |
0
EUR
|
0
EUR
|
— |
| Derivative financial assets | — | — | — |
| Derivative financial assets held for hedging |
283,000,000
EUR
|
160,000,000
EUR
|
— |
| Loans and advances | — | — | — |
| Loans and advances to banks |
3 146
EUR
|
1 393
EUR
|
— |
| Reverse repurchase agreements and cash collateral on securities borrowed |
24 450
EUR
|
26 422
EUR
|
— |
| Other assets |
1 630
EUR
|
1 361
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 |
7 271
EUR
|
7 157
EUR
|
— |
| Financial liabilities at fair value through profit or loss |
22 187
EUR
|
21 409
EUR
|
— |
| Financial liabilities at amortised cost |
268 387
EUR
|
254 053
EUR
|
— |
| Financial liabilities |
291 667
EUR
|
276 781
EUR
|
— |
| Miscellaneous liabilities [abstract] | |||
| Derivative financial liabilities | — | — | — |
| Derivative financial liabilities held for hedging |
1 094
EUR
|
1 319
EUR
|
— |
| Deposit liabilities | — | — | — |
| Deposits from banks |
4 695
EUR
|
4 604
EUR
|
— |
| Other liabilities |
2 520
EUR
|
2 908
EUR
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
340 346
EUR
|
320 743
EUR
|
— |
| Liabilities |
317 269
EUR
|
299 214
EUR
|
— |
| Assets less current liabilities [abstract] |