Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||
| Investment property [abstract] | ||||
| Investment property |
700,000,000
EUR
|
629,000,000
EUR
|
629,000,000
EUR
|
— |
| Investments accounted for using equity method [abstract] | ||||
| Investments in associates accounted for using equity method |
9,000,000
EUR
|
7,000,000
EUR
|
7,000,000
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 |
1 267
EUR
|
180,000,000
EUR
|
1 214
EUR
|
— |
| Financial assets at fair value through other comprehensive income [abstract] | ||||
| Financial assets measured at fair value through other comprehensive income |
18 713
EUR
|
20 659
EUR
|
19 531
EUR
|
— |
| Cash and cash equivalents [abstract] | ||||
| Cash and cash equivalents |
1 830
EUR
|
2 083
EUR
|
2 083
EUR
|
1 804
EUR
|
| Miscellaneous assets [abstract] | ||||
| Derivative financial assets | — | — | — | — |
| Derivative financial assets held for hedging |
272,000,000
EUR
|
262,000,000
EUR
|
262,000,000
EUR
|
— |
| Other assets |
1 645
EUR
|
1 586
EUR
|
1 586
EUR
|
— |
| Miscellaneous liabilities [abstract] | ||||
| Derivative financial liabilities |
39,000,000
EUR
|
81,000,000
EUR
|
81,000,000
EUR
|
— |
| Subordinated liabilities [abstract] | ||||
| Subordinated liabilities |
2 635
EUR
|
2 581
EUR
|
2 581
EUR
|
— |
| Investment contracts liabilities |
38 409
EUR
|
35 460
EUR
|
35 460
EUR
|
— |
| Other liabilities |
7 864
EUR
|
5 907
EUR
|
5 938
EUR
|
— |
| Issued capital [abstract] | ||||
| Issued capital |
1 415
EUR
|
1 472
EUR
|
1 472
EUR
|
— |
| Retained earnings [abstract] | ||||
| Retained earnings, profit (loss) for reporting period |
301,000,000
EUR
|
456,000,000
EUR
|
456,000,000
EUR
|
— |
| Miscellaneous equity [abstract] | ||||
| Reserve of share-based payments |
33,000,000
EUR
|
54,000,000
EUR
|
54,000,000
EUR
|
— |
| Additional paid-in capital |
463,000,000
EUR
|
609,000,000
EUR
|
609,000,000
EUR
|
— |
| Net assets (liabilities) [abstract] | ||||
| Assets |
55 331
EUR
|
51 518
EUR
|
51 576
EUR
|
— |
| Assets less current liabilities [abstract] |