Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2021-12-31 |
As at 2021-01-01 |
As at 2020-12-31 |
As at 2020-01-01 |
|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||
| Property, plant and equipment [abstract] | ||||
| Property, plant and equipment |
219,000,000
NOK
|
— |
170,000,000
NOK
|
— |
| Intangible assets and goodwill [abstract] | ||||
| Intangible assets and goodwill |
72,000,000
NOK
|
— |
18,000,000
NOK
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||||
| Investments in subsidiaries reported in separate financial statements |
0
NOK
|
— |
0
NOK
|
— |
| Investments accounted for using equity method [abstract] | ||||
| Investments accounted for using equity method |
190,000,000
NOK
|
— |
188,000,000
NOK
|
— |
| Cash and cash equivalents [abstract] | ||||
| Cash and cash equivalents |
930,000,000
NOK
|
1 026
NOK
|
1 026
NOK
|
646,000,000
NOK
|
| Miscellaneous assets [abstract] | ||||
| Derivative financial assets |
2,000,000
NOK
|
— |
0
NOK
|
— |
| Equity instruments held |
760,000,000
NOK
|
— |
524,000,000
NOK
|
— |
| Debt instruments held [abstract] | ||||
| Debt instruments held |
1 811
NOK
|
— |
1 062
NOK
|
— |
| Loans and advances | — | — | — | — |
| Loans and advances to banks |
1 039
NOK
|
— |
1 120
NOK
|
— |
| Loans and advances to customers |
21 311
NOK
|
— |
14 153
NOK
|
— |
| Cash and bank balances at central banks |
80,000,000
NOK
|
— |
88,000,000
NOK
|
— |
| Other assets |
99,000,000
NOK
|
— |
68,000,000
NOK
|
— |
| Miscellaneous non-current liabilities [abstract] | ||||
| Non-current debt instruments issued |
5 795
NOK
|
— |
4 108
NOK
|
— |
| Miscellaneous liabilities [abstract] | ||||
| Derivative financial liabilities |
18,000,000
NOK
|
— |
24,000,000
NOK
|
— |
| Dividend payables |
1 5
NOK
|
— |
15,000,000
NOK
|
— |
| Deposit liabilities | — | — | — | — |
| Deposits from banks |
930,000,000
NOK
|
— |
1 026
NOK
|
— |
| Deposits from customers [abstract] | ||||
| Deposits from customers |
15 950
NOK
|
— |
10 609
NOK
|
— |
| Subordinated liabilities [abstract] | ||||
| Subordinated liabilities |
301,000,000
NOK
|
— |
201,000,000
NOK
|
— |
| Other liabilities |
133,000,000
NOK
|
— |
73,000,000
NOK
|
— |
| Issued capital [abstract] | ||||
| Issued capital |
909,000,000
NOK
|
— |
224,000,000
NOK
|
— |
| Accumulated other comprehensive income [abstract] | ||||
| Reserve of gains and losses on financial assets measured at fair value through other comprehensive income |
49,000,000
NOK
|
— |
51,000,000
NOK
|
— |
| Net assets (liabilities) [abstract] | ||||
| Assets |
25 583
NOK
|
— |
17 391
NOK
|
— |
| Liabilities |
22 252
NOK
|
— |
15 084
NOK
|
— |
| Assets less current liabilities [abstract] |