Statement Of Comprehensive Income [Abstract]
| Concept |
2022-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2021-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | |||||||||||
| Profit (loss) |
3 377
NOK
|
3 377
NOK
|
3 350
NOK
|
27,000,000
NOK
|
3 350
NOK
|
— |
2 362
NOK
|
2 376
NOK
|
2 362
NOK
|
14,000,000
NOK
|
2 376
NOK
|
| Other comprehensive income [abstract] | |||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] | |||||||||||
| Other comprehensive income, before tax, gains (losses) from investments in equity instruments | — |
82,000,000
NOK
|
— | — | — | — | — |
576,000,000
NOK
|
— | — | — |
| Other comprehensive income, before tax, gains (losses) on revaluation of property, plant and equipment, right-of-use assets and intangible assets | — | — | — | — | — | — | — |
63,000,000
NOK
|
— | — | — |
| Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans | — |
45,000,000
NOK
|
— | — | — | — | — |
12,000,000
NOK
|
— | — | — |
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | |||||||||||
| Exchange differences on translation [abstract] | |||||||||||
| Gains (losses) on exchange differences on translation of foreign operations, before tax | — |
302,000,000
NOK
|
— | — | — | — | — |
19,000,000
NOK
|
— | — | — |
| Hedges of net investment in foreign operations [abstract] | |||||||||||
| Gains (losses) on hedges of net investments in foreign operations, before tax | — |
10,000,000
NOK
|
— | — | — | — | — |
15,000,000
NOK
|
— | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] | |||||||||||
| Income tax relating to financial assets measured at fair value through other comprehensive income included in other comprehensive income | — |
3,000,000
NOK
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income | — |
292,000,000
NOK
|
10,000,000
NOK
|
— |
292,000,000
NOK
|
302,000,000
NOK
|
439,000,000
NOK
|
439,000,000
NOK
|
439,000,000
NOK
|
— | — |
| Comprehensive income | — |
3 085
NOK
|
3 360
NOK
|
27,000,000
NOK
|
3 058
NOK
|
302,000,000
NOK
|
1 923
NOK
|
1 937
NOK
|
1 923
NOK
|
14,000,000
NOK
|
— |
| Comprehensive income attributable to [abstract] | |||||||||||
| Comprehensive income, attributable to owners of parent | — |
3 058
NOK
|
— | — | — | — | — |
1 923
NOK
|
— | — | — |