Statement Of Changes In Equity [Abstract]
| Concept |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||
| Equity |
6,094,000,000
NOK
|
7,281,000,000
NOK
|
— |
2 929,7
NOK
|
2,257,000,000
NOK
|
2 320,4
NOK
|
— | — |
6,094,000,000
NOK
|
4,045,000,000
NOK
|
9,621,000,000
NOK
|
— | — |
4,687,000,000
NOK
|
— |
7,281,000,000
NOK
|
4,687,000,000
NOK
|
9,606,000,000
NOK
|
— | — | — |
2,257,000,000
NOK
|
2 070,3
NOK
|
1,560,000,000
NOK
|
2 539,0
NOK
|
— |
5,126,000,000
NOK
|
5,441,000,000
NOK
|
1,560,000,000
NOK
|
2 399,2
NOK
|
5,126,000,000
NOK
|
2,259,000,000
NOK
|
1 886,6
NOK
|
9,606,000,000
NOK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — |
2,030,000,000
NOK
|
— | — | — |
88,000,000
NOK
|
88,000,000
NOK
|
— | — | — |
2,118,000,000
NOK
|
2,030,000,000
NOK
|
— |
1,471,000,000
NOK
|
— | — | — |
1,371,000,000
NOK
|
100,000,000
NOK
|
100,000,000
NOK
|
— | — | — | — |
1,371,000,000
NOK
|
— | — | — | — | — | — | — | — |
| Other comprehensive income | — | — |
8,000,000
NOK
|
— | — | — | — | — | — | — | — |
8,000,000
NOK
|
8,000,000
NOK
|
— |
1,000,000
NOK
|
— | — | — |
1,000,000
NOK
|
— | — | — | — | — | — |
1,000,000
NOK
|
— | — | — | — | — | — | — | — |
| Comprehensive income | — | — |
2,038,000,000
NOK
|
— | — | — |
88,000,000
NOK
|
88,000,000
NOK
|
— | — | — |
2,126,000,000
NOK
|
2,038,000,000
NOK
|
— |
1,470,000,000
NOK
|
— | — | — |
1,370,000,000
NOK
|
100,000,000
NOK
|
100,000,000
NOK
|
— | — | — | — |
1,370,000,000
NOK
|
— | — | — | — | — | — | — | — |