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 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 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Right-of-use assets | — | — | — |
1 793
SEK
|
— |
1 676
SEK
|
— | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method | — | — | — |
9,000,000
SEK
|
— |
7,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — |
14,000,000
SEK
|
— |
17,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
10,000,000
SEK
|
— |
19,000,000
SEK
|
— | — | — | — |
43,000,000
SEK
|
— | — | — | — |
| Assets | — | — | — |
6 165
SEK
|
— |
6 508
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital | — | — | — |
20,000,000
SEK
|
— |
20,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — |
1 892
SEK
|
— |
1 865
SEK
|
— | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — |
8,000,000
SEK
|
— |
34,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity |
20,000,000
SEK
|
1 892
SEK
|
441,000,000
SEK
|
2 361
SEK
|
8,000,000
SEK
|
2 361
SEK
|
1 865
SEK
|
20,000,000
SEK
|
34,000,000
SEK
|
441,000,000
SEK
|
2 252
SEK
|
1 784
SEK
|
6,000,000
SEK
|
441,000,000
SEK
|
20,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||
| Deferred tax liabilities | — | — | — |
143,000,000
SEK
|
— |
174,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — |
6 165
SEK
|
— |
6 508
SEK
|
— | — | — | — | — | — | — | — | — |