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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||
| Assets [abstract] | ||||||||||||
| Right-of-use assets | — | — |
11,000,000
SEK
|
— | — | — | — |
2,000,000
SEK
|
— | — | — | — |
| Cash and cash equivalents | — | — |
717,000,000
SEK
|
— | — | — | — |
299,000,000
SEK
|
613,000,000
SEK
|
— | — | — |
| Assets | — | — |
10 312
SEK
|
— | — | — | — |
9 322
SEK
|
— | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||
| Equity [abstract] | ||||||||||||
| Issued capital | — | — |
1,000,000
SEK
|
— | — | — | — |
1,000,000
SEK
|
— | — | — | — |
| Equity |
6 515
SEK
|
3 643
SEK
|
10 159
SEK
|
1,000,000
SEK
|
1,000,000
SEK
|
3 643
SEK
|
5 531
SEK
|
9 175
SEK
|
8 807
SEK
|
5 163
SEK
|
1,000,000
SEK
|
3 643
SEK
|
| Liabilities [abstract] | ||||||||||||
| Liabilities | — | — |
152,000,000
SEK
|
— | — | — | — |
147,000,000
SEK
|
— | — | — | — |
| Equity and liabilities | — | — |
10 312
SEK
|
— | — | — | — |
9 322
SEK
|
— | — | — | — |