Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 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 |
As at 2022-12-31 |
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 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||
| Equity | — | — |
242,350,000,000
NOK
|
— | — | — | — |
239,596,000,000
NOK
|
— | — | — | — |
244,295,000,000
NOK
|
252,052,000,000
NOK
|
| Changes in equity [abstract] | ||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||
| Profit (loss) | — |
4 130,4
NOK
|
— | — | — | — | — | — | — |
3 437,8
NOK
|
— | — | — | — |
| Other comprehensive income |
12,000,000
NOK
|
3,286,000,000
NOK
|
— |
1,017,000,000
NOK
|
4,291,000,000
NOK
|
— | — | — |
2,133,000,000
NOK
|
180,000,000
NOK
|
1,946,000,000
NOK
|
7,000,000
NOK
|
— | — |
| Comprehensive income | — |
4 459,0
NOK
|
— | — | — | — | — | — | — |
3 419,9
NOK
|
— | — | — | — |
| Dividends recognised as distributions to owners | — |
4 124,9
NOK
|
— | — | — |
4 124,9
NOK
|
3 849,8
NOK
|
— | — |
3 849,8
NOK
|
— | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
240,000,000
NOK
|
240,000,000
NOK
|
— | — | — | — | — | — | — |
236,000,000
NOK
|
— |
236,000,000
NOK
|
— | — |