Statement Of Changes In Equity [Abstract]
| Concept |
2021-01-01 to 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 |
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 |
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 |
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 |
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 |
2020-01-01 to 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||
| Equity | — |
44,665,000,000
NOK
|
— |
6,943,000,000
NOK
|
— |
50,533,000,000
NOK
|
-
NOK
|
— |
50,332,000,000
NOK
|
201,000,000
NOK
|
— |
1,393,000,000
NOK
|
117,000,000
NOK
|
— | — | — | — |
3,966,000,000
NOK
|
5,675,000,000
NOK
|
1,333,000,000
NOK
|
6,911,000,000
NOK
|
10,178,000,000
NOK
|
117,000,000
NOK
|
— | — |
517,000,000
NOK
|
— | — |
15,853,000,000
NOK
|
— | — | — |
10,498,000,000
NOK
|
6,383,000,000
NOK
|
343,000,000
NOK
|
6,850,000,000
NOK
|
16,882,000,000
NOK
|
3,374,000,000
NOK
|
186,000,000
NOK
|
117,000,000
NOK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
274,000,000
NOK
|
— |
-
NOK
|
— |
41,341,000,000
NOK
|
— | — |
-
NOK
|
— | — |
-
NOK
|
— | — |
-
NOK
|
41,066,000,000
NOK
|
41,341,000,000
NOK
|
836,000,000
NOK
|
— | — | — | — | — | — |
858,000,000
NOK
|
-
NOK
|
— |
-
NOK
|
-
NOK
|
— |
-
NOK
|
22,000,000
NOK
|
858,000,000
NOK
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
221,000,000
NOK
|
— |
1,332,000,000
NOK
|
— |
625,000,000
NOK
|
— | — |
1,910,000,000
NOK
|
— | — |
-
NOK
|
— | — |
-
NOK
|
403,000,000
NOK
|
47,000,000
NOK
|
1,745,000,000
NOK
|
— | — | — | — | — | — |
133,000,000
NOK
|
1,147,000,000
NOK
|
— |
-
NOK
|
-
NOK
|
— |
173,000,000
NOK
|
638,000,000
NOK
|
1,107,000,000
NOK
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
53,000,000
NOK
|
— |
1,332,000,000
NOK
|
— |
40,716,000,000
NOK
|
— | — |
1,910,000,000
NOK
|
— | — |
-
NOK
|
— | — |
-
NOK
|
40,663,000,000
NOK
|
41,294,000,000
NOK
|
909,000,000
NOK
|
— | — | — | — | — | — |
725,000,000
NOK
|
1,147,000,000
NOK
|
— |
-
NOK
|
-
NOK
|
— |
173,000,000
NOK
|
661,000,000
NOK
|
249,000,000
NOK
|
— | — | — | — | — | — | — | — |
| Issue of equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
12,000,000
NOK
|
— | — | — | — | — | — |
-
NOK
|
-
NOK
|
— |
-
NOK
|
-
NOK
|
— |
-
NOK
|
12,000,000
NOK
|
-
NOK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
-
NOK
|
— |
-
NOK
|
— |
35,000,000
NOK
|
— | — |
-
NOK
|
— | — |
-
NOK
|
— | — |
-
NOK
|
35,000,000
NOK
|
34,000,000
NOK
|
90,000,000
NOK
|
— | — | — | — | — | — |
90,000,000
NOK
|
-
NOK
|
— |
-
NOK
|
-
NOK
|
— |
-
NOK
|
-
NOK
|
90,000,000
NOK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |
88,000,000
NOK
|
— |
-
NOK
|
— |
89,000,000
NOK
|
— | — |
-
NOK
|
— | — |
-
NOK
|
— | — |
-
NOK
|
176,000,000
NOK
|
89,000,000
NOK
|
67,000,000
NOK
|
— | — | — | — | — | — |
41,000,000
NOK
|
-
NOK
|
— |
-
NOK
|
-
NOK
|
— |
-
NOK
|
25,000,000
NOK
|
41,000,000
NOK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
8,000,000
NOK
|
— |
-
NOK
|
— |
33,000,000
NOK
|
— | — |
-
NOK
|
— | — |
-
NOK
|
— | — |
33,000,000
NOK
|
25,000,000
NOK
|
-
NOK
|
77,000,000
NOK
|
— | — | — | — | — | — |
-
NOK
|
-
NOK
|
— |
61,000,000
NOK
|
-
NOK
|
— |
-
NOK
|
16,000,000
NOK
|
61,000,000
NOK
|
— | — | — | — | — | — | — | — |