Statement Of Financial Position [Abstract]
| Concept |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||
| Right-of-use assets | — | — | — | — | — | — |
22,000,000
SEK
|
41,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — |
17,000,000
SEK
|
8,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — | — | — | — | — | — |
629,000,000
SEK
|
639,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||
| Current tax assets, current | — | — | — | — | — | — |
13,000,000
SEK
|
4,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — |
163,000,000
SEK
|
164,000,000
SEK
|
— | — | — | — | — | — |
223,000,000
SEK
|
— | — | — | — | — | — |
| Current assets | — | — | — | — | — | — |
322,000,000
SEK
|
309,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets | — | — | — | — | — | — |
951,000,000
SEK
|
947,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — | — | — | — | — |
298,000,000
SEK
|
298,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — | — | — |
277,000,000
SEK
|
281,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — | — | — |
283,000,000
SEK
|
269,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — | — |
1,000,000
SEK
|
1,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
5 599
SEK
|
298,000,000
SEK
|
1,000,000
SEK
|
277,000,000
SEK
|
283,000,000
SEK
|
5 860
SEK
|
284,000,000
SEK
|
270,000,000
SEK
|
5 609
SEK
|
1,000,000
SEK
|
298,000,000
SEK
|
281,000,000
SEK
|
269,000,000
SEK
|
5 860
SEK
|
306,000,000
SEK
|
1,000,000
SEK
|
5 579
SEK
|
274,000,000
SEK
|
275,000,000
SEK
|
305,000,000
SEK
|
5 885
SEK
|
| Liabilities [abstract] | |||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||
| Deferred tax liabilities | — | — | — | — | — | — |
5,000,000
SEK
|
9,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — | — | — | — | — | — |
312,000,000
SEK
|
299,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||
| Current provisions [abstract] | |||||||||||||||||||||
| Current provisions | — | — | — | — | — | — |
3,000,000
SEK
|
2,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities, current | — | — | — | — | — | — |
2,000,000
SEK
|
2,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — | — | — | — | — | — |
355,000,000
SEK
|
378,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — | — | — |
951,000,000
SEK
|
947,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |