Statement Of Financial Position [Abstract]
| Concept |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||||||||||||||||||||||
| Property, plant and equipment |
275,000,000
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
326,000,000
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Goodwill |
465,000,000
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
458,000,000
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method |
1 411
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1 452
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements |
0
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
0
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
60,000,000
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
39,000,000
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||||||||||||||||||||||
| Cash and cash equivalents |
1 794
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
2 607
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1 812
NOK
|
| Assets |
90 003
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
89 547
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||||||||||||||||||||||
| Issued capital |
2 100
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
2 101
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Share premium |
3 779
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
3 779
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves |
127,000,000
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
310,000,000
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent |
13 050
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
12 774
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests |
6,000,000
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
7,000,000
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
13 051
NOK
|
112,000,000
NOK
|
127,000,000
NOK
|
6,000,000
NOK
|
3 779
NOK
|
2 101
NOK
|
7,000,000
NOK
|
4 889
NOK
|
350,000,000
NOK
|
1 681
NOK
|
91,000,000
NOK
|
1 413
NOK
|
7,000,000
NOK
|
4 716
NOK
|
7,000,000
NOK
|
310,000,000
NOK
|
350,000,000
NOK
|
2 101
NOK
|
3 779
NOK
|
12 775
NOK
|
12 774
NOK
|
91,000,000
NOK
|
310,000,000
NOK
|
7,000,000
NOK
|
3 779
NOK
|
2 101
NOK
|
1 413
NOK
|
350,000,000
NOK
|
4 716
NOK
|
7,000,000
NOK
|
2 777
NOK
|
1 778
NOK
|
10,000,000
NOK
|
10 100
NOK
|
318,000,000
NOK
|
350,000,000
NOK
|
26,000,000
NOK
|
1 108
NOK
|
3 727
NOK
|
7,000,000
NOK
|
— |
| Liabilities [abstract] | |||||||||||||||||||||||||||||||||||||||||
| Current liabilities [abstract] | |||||||||||||||||||||||||||||||||||||||||
| Current tax liabilities, current |
435,000,000
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
319,000,000
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
76 954
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
76 773
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
90 003
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
89 547
NOK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |