Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||||
| Property, plant and equipment [abstract] | ||||||
| Land and buildings [abstract] | ||||||
| Land and buildings |
190,000,000
NOK
|
137,000,000
NOK
|
190,000,000
NOK
|
139,000,000
NOK
|
— | — |
| Property, plant and equipment |
206,000,000
NOK
|
153,000,000
NOK
|
202,000,000
NOK
|
151,000,000
NOK
|
— | — |
| Intangible assets and goodwill [abstract] | ||||||
| Intangible assets and goodwill |
59,000,000
NOK
|
58,000,000
NOK
|
56,000,000
NOK
|
55,000,000
NOK
|
— | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||||||
| Investments in subsidiaries reported in separate financial statements |
0
NOK
|
1 571
NOK
|
0
NOK
|
1 571
NOK
|
— | — |
| Cash and cash equivalents [abstract] | ||||||
| Cash and cash equivalents |
266,000,000
NOK
|
266,000,000
NOK
|
394,000,000
NOK
|
394,000,000
NOK
|
428,000,000
NOK
|
428,000,000
NOK
|
| Miscellaneous assets [abstract] | ||||||
| Net defined benefit asset |
59,000,000
NOK
|
59,000,000
NOK
|
47,000,000
NOK
|
47,000,000
NOK
|
— | — |
| Derivative financial assets |
1 336
NOK
|
937,000,000
NOK
|
987,000,000
NOK
|
643,000,000
NOK
|
— | — |
| Loans and advances | — | — | — | — | — | — |
| Loans and advances to banks |
919,000,000
NOK
|
4 796
NOK
|
361,000,000
NOK
|
3 865
NOK
|
— | — |
| Loans and advances to customers |
81 572
NOK
|
49 321
NOK
|
76 078
NOK
|
45 723
NOK
|
— | — |
| Cash and bank balances at central banks |
266,000,000
NOK
|
266,000,000
NOK
|
394,000,000
NOK
|
394,000,000
NOK
|
— | — |
| Other assets |
203,000,000
NOK
|
203,000,000
NOK
|
117,000,000
NOK
|
117,000,000
NOK
|
— | — |
| Classes of other provisions [abstract] | ||||||
| Warranty provision [abstract] | ||||||
| Warranty provision |
4,000,000
NOK
|
4,000,000
NOK
|
26,000,000
NOK
|
26,000,000
NOK
|
— | — |
| Borrowings, by type [abstract] | ||||||
| Bonds issued |
36 170
NOK
|
7 859
NOK
|
34 236
NOK
|
7 429
NOK
|
— | — |
| Trade and other payables [abstract] | ||||||
| Accruals and deferred income including contract liabilities [abstract] | ||||||
| Accruals and deferred income including contract liabilities |
98,000,000
NOK
|
93,000,000
NOK
|
90,000,000
NOK
|
86,000,000
NOK
|
— | — |
| Miscellaneous liabilities [abstract] | ||||||
| Net defined benefit liability |
28,000,000
NOK
|
28,000,000
NOK
|
26,000,000
NOK
|
26,000,000
NOK
|
— | — |
| Derivative financial liabilities |
603,000,000
NOK
|
840,000,000
NOK
|
752,000,000
NOK
|
579,000,000
NOK
|
— | — |
| Deposit liabilities | — | — | — | — | — | — |
| Deposits from banks |
1 727
NOK
|
2 550
NOK
|
586,000,000
NOK
|
1 969
NOK
|
— | — |
| Deposits from customers [abstract] | ||||||
| Balances on term deposits from customers |
14 622
NOK
|
14 709
NOK
|
12 270
NOK
|
12 270
NOK
|
— | — |
| Balances on demand deposits from customers |
32 788
NOK
|
32 801
NOK
|
31 611
NOK
|
31 697
NOK
|
— | — |
| Deposits from customers |
47 410
NOK
|
47 510
NOK
|
43 881
NOK
|
43 967
NOK
|
— | — |
| Subordinated liabilities [abstract] | ||||||
| Subordinated liabilities |
857,000,000
NOK
|
857,000,000
NOK
|
857,000,000
NOK
|
857,000,000
NOK
|
— | — |
| Other liabilities |
727,000,000
NOK
|
725,000,000
NOK
|
629,000,000
NOK
|
651,000,000
NOK
|
— | — |
| Issued capital [abstract] | ||||||
| Issued capital |
989,000,000
NOK
|
989,000,000
NOK
|
989,000,000
NOK
|
989,000,000
NOK
|
— | — |
| Accumulated other comprehensive income [abstract] | ||||||
| Reserve of change in fair value of financial liability attributable to change in credit risk of liability |
13,000,000
NOK
|
0
NOK
|
16,000,000
NOK
|
0
NOK
|
— | — |
| Net assets (liabilities) [abstract] | ||||||
| Assets |
96 735
NOK
|
69 325
NOK
|
89 501
NOK
|
63 704
NOK
|
— | — |
| Liabilities |
88 055
NOK
|
60 779
NOK
|
81 399
NOK
|
55 787
NOK
|
— | — |
| Assets less current liabilities [abstract] |