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 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 2021-12-31 |
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] | ||||||||||||||||||
| Property, plant and equipment | — | — | — |
11,000,000
SEK
|
— | — |
17,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Investment property | — | — | — |
55 872
SEK
|
— | — |
55 179
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
346,000,000
SEK
|
— | — |
159,000,000
SEK
|
— | — | — | — | — |
315,000,000
SEK
|
— | — | — | — | — |
| Assets | — | — | — |
57 372
SEK
|
— | — |
56 809
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital | — | — | — |
192,000,000
SEK
|
— | — |
192,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — |
19 886
SEK
|
— | — |
20 866
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — |
135,000,000
SEK
|
— | — |
144,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — |
22 391
SEK
|
— | — |
23 380
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
192,000,000
SEK
|
19 886
SEK
|
2 178
SEK
|
22 391
SEK
|
135,000,000
SEK
|
22 391
SEK
|
23 380
SEK
|
20 866
SEK
|
192,000,000
SEK
|
23 380
SEK
|
144,000,000
SEK
|
2 178
SEK
|
21 948
SEK
|
19 500
SEK
|
78,000,000
SEK
|
21 948
SEK
|
2 178
SEK
|
192,000,000
SEK
|
| Liabilities [abstract] | ||||||||||||||||||
| Deferred tax liabilities | — | — | — |
5 171
SEK
|
— | — |
5 180
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — |
57 372
SEK
|
— | — |
56 809
SEK
|
— | — | — | — | — | — | — | — | — | — | — |