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 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 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 |
As at 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — | — |
2 341
SEK
|
2 175
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — | — | — | — |
68,000,000
SEK
|
60,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — | — | — | — | — |
31,000,000
SEK
|
3 0
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — | — |
37,000,000
SEK
|
–
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — | — | — | — | — | — | — |
2 733
SEK
|
2 510
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||||
| Cash and cash equivalents | — | — | — | — | — | — | — |
762,000,000
SEK
|
917,000,000
SEK
|
— | — | — | — | — | — | — |
1 220
SEK
|
— | — | — | — | — | — | — |
| Current assets | — | — | — | — | — | — | — |
1 134
SEK
|
1 297
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets | — | — | — | — | — | — | — |
3 868
SEK
|
3 807
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital | — | — | — | — | — | — | — |
4,000,000
SEK
|
4,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — | — | — | — |
525,000,000
SEK
|
337,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — | — | — | — |
13,000,000
SEK
|
4 8
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — | — | — | — |
1 879
SEK
|
1 887
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — | — | — |
314,000,000
SEK
|
3 18
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
52 5
SEK
|
4,000,000
SEK
|
314,000,000
SEK
|
11,000,000
SEK
|
1 879
SEK
|
2,000,000
SEK
|
1 338
SEK
|
2 193
SEK
|
2 206
SEK
|
337,000,000
SEK
|
3 18
SEK
|
4,000,000
SEK
|
1,000,000
SEK
|
1 887
SEK
|
46,000,000
SEK
|
1 499
SEK
|
1 616
SEK
|
–
SEK
|
129,000,000
SEK
|
4,000,000
SEK
|
1,000,000
SEK
|
1 616
SEK
|
1 567
SEK
|
8 5
SEK
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||||||||
| Non-current provisions | — | — | — | — | — | — | — |
89,000,000
SEK
|
9 0
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — | — | — | — | — | — | — |
9 18
SEK
|
1 425
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||||||||
| Current liabilities | — | — | — | — | — | — | — |
7 56
SEK
|
176,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — | — | — | — |
3 868
SEK
|
3 807
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |