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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Right-of-use assets | — | — | — |
623,000,000
SEK
|
— | — | — | — |
534,000,000
SEK
|
— | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — |
11,000,000
SEK
|
— | — | — | — |
16,000,000
SEK
|
— | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
46,000,000
SEK
|
— | — | — | — |
50,000,000
SEK
|
— |
181,000,000
SEK
|
— | — | — | — |
| Assets | — | — | — |
68 922
SEK
|
— | — | — | — |
66 841
SEK
|
— | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital | — | — | — |
165,000,000
SEK
|
— | — | — | — |
165,000,000
SEK
|
— | — | — | — | — | — |
| Retained earnings | — | — | — |
30 323
SEK
|
— | — | — | — |
29 979
SEK
|
— | — | — | — | — | — |
| Other reserves | — | — | — |
3,000,000
SEK
|
— | — | — | — |
3,000,000
SEK
|
— | — | — | — | — | — |
| Equity |
30 323
SEK
|
359,000,000
SEK
|
3,000,000
SEK
|
30 844
SEK
|
165,000,000
SEK
|
165,000,000
SEK
|
359,000,000
SEK
|
29 979
SEK
|
30 500
SEK
|
3,000,000
SEK
|
31 432
SEK
|
165,000,000
SEK
|
30 911
SEK
|
3,000,000
SEK
|
359,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||
| Deferred tax liabilities | — | — | — |
6 242
SEK
|
— | — | — | — |
5 830
SEK
|
— | — | — | — | — | — |
| Equity and liabilities | — | — | — |
68 922
SEK
|
— | — | — | — |
66 841
SEK
|
— | — | — | — | — | — |