Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||
| Equity | — |
6 161
NOK
|
2 700
NOK
|
— | — |
6 611
NOK
|
— |
2 249
NOK
|
5 909
NOK
|
— | — | — |
2 989
NOK
|
6 649
NOK
|
2 249
NOK
|
— |
5 765
NOK
|
2 249
NOK
|
3 133
NOK
|
6 649
NOK
|
| Changes in equity [abstract] | ||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||
| Profit (loss) |
481,000,000
NOK
|
— | — |
481,000,000
NOK
|
0
NOK
|
— |
0
NOK
|
— | — |
0
NOK
|
2 572
NOK
|
2 572
NOK
|
— | — | — |
0
NOK
|
— | — | — | — |
| Other comprehensive income |
243,000,000
NOK
|
— | — |
243,000,000
NOK
|
0
NOK
|
— |
0
NOK
|
— | — |
0
NOK
|
204,000,000
NOK
|
204,000,000
NOK
|
— | — | — |
0
NOK
|
— | — | — | — |
| Comprehensive income |
724,000,000
NOK
|
— | — | — | — | — | — | — | — | — |
2 775
NOK
|
— | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
57,000,000
NOK
|
— | — |
57,000,000
NOK
|
0
NOK
|
— |
0
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
415,000,000
NOK
|
— | — |
377,000,000
NOK
|
38,000,000
NOK
|
— |
0
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |