Statement Of Comprehensive Income [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||
| Profit (loss) |
309,000,000
NOK
|
5 373
NOK
|
5 064
NOK
|
5 460
NOK
|
5 696
NOK
|
236,000,000
NOK
|
| Other comprehensive income [abstract] | ||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract] | ||||||
| Income tax relating to remeasurements of defined benefit plans included in other comprehensive income | — |
6,000,000
NOK
|
— | — |
5,000,000
NOK
|
— |
| Other comprehensive income | — |
23,000,000
NOK
|
23,000,000
NOK
|
19,000,000
NOK
|
19,000,000
NOK
|
— |
| Comprehensive income | — |
5 351
NOK
|
— | — |
5 677
NOK
|
— |
| Comprehensive income attributable to [abstract] | ||||||
| Comprehensive income, attributable to owners of parent | — |
5 042
NOK
|
— | — |
5 440
NOK
|
— |
| Comprehensive income, attributable to non-controlling interests | — |
309,000,000
NOK
|
— | — |
236,000,000
NOK
|
— |