Statement Of Changes In Equity [Abstract]
| Concept |
2021-01-01 to 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 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 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 |
2021-01-01 to 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 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
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 |
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 |
2020-01-01 to 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 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 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
2 436
NOK
|
316,000,000
NOK
|
— | — | — | — |
1 326
NOK
|
— |
91,000,000
NOK
|
-
NOK
|
— |
-
NOK
|
— |
793,000,000
NOK
|
316,000,000
NOK
|
1 734
NOK
|
91,000,000
NOK
|
— | — | — |
2 011
NOK
|
114,000,000
NOK
|
309,000,000
NOK
|
139,000,000
NOK
|
— | — |
1 321
NOK
|
309,000,000
NOK
|
75,000,000
NOK
|
— | — | — |
754,000,000
NOK
|
-
NOK
|
— |
898,000,000
NOK
|
— | — | — |
170,000,000
NOK
|
87,000,000
NOK
|
206,000,000
NOK
|
3 194
NOK
|
2 887
NOK
|
3 451
NOK
|
48,000,000
NOK
|
87,000,000
NOK
|
254,000,000
NOK
|
308,000,000
NOK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
23,000,000
NOK
|
— | — |
67,000,000
NOK
|
539,000,000
NOK
|
-
NOK
|
-
NOK
|
— |
67,000,000
NOK
|
— | — |
-
NOK
|
— |
-
NOK
|
— | — | — | — |
630,000,000
NOK
|
539,000,000
NOK
|
4 959
NOK
|
— | — | — | — |
2 897
NOK
|
2 012
NOK
|
— | — | — |
2 012
NOK
|
-
NOK
|
-
NOK
|
— | — |
-
NOK
|
— |
-
NOK
|
49,000,000
NOK
|
2 897
NOK
|
— | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
-
NOK
|
— | — |
-
NOK
|
202,000,000
NOK
|
48,000,000
NOK
|
-
NOK
|
— |
-
NOK
|
— | — |
40,000,000
NOK
|
— |
-
NOK
|
— | — | — | — |
202,000,000
NOK
|
115,000,000
NOK
|
616,000,000
NOK
|
— | — | — | — |
-
NOK
|
616,000,000
NOK
|
— | — | — |
48,000,000
NOK
|
-
NOK
|
116,000,000
NOK
|
— | — |
-
NOK
|
— |
547,000,000
NOK
|
-
NOK
|
-
NOK
|
— | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
23,000,000
NOK
|
— | — |
67,000,000
NOK
|
337,000,000
NOK
|
48,000,000
NOK
|
-
NOK
|
— |
67,000,000
NOK
|
— | — |
40,000,000
NOK
|
— |
-
NOK
|
— | — | — | — |
428,000,000
NOK
|
425,000,000
NOK
|
4 343
NOK
|
— | — | — | — |
2 897
NOK
|
1 396
NOK
|
— | — | — |
2 059
NOK
|
-
NOK
|
116,000,000
NOK
|
— | — |
-
NOK
|
— |
547,000,000
NOK
|
49,000,000
NOK
|
2 897
NOK
|
— | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |
-
NOK
|
— | — |
-
NOK
|
-
NOK
|
-
NOK
|
-
NOK
|
— |
-
NOK
|
— | — |
-
NOK
|
— |
-
NOK
|
— | — | — | — |
-
NOK
|
-
NOK
|
6,000,000
NOK
|
— | — | — | — |
-
NOK
|
-
NOK
|
— | — | — |
-
NOK
|
-
NOK
|
-
NOK
|
— | — |
-
NOK
|
— |
-
NOK
|
6,000,000
NOK
|
-
NOK
|
— | — | — | — | — | — | — | — | — | — |