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] | ||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||
| Property, plant and equipment | — | — | — | — |
11,000,000
SEK
|
— |
37,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — |
100,000,000
SEK
|
— |
138,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Goodwill | — | — | — | — |
361,000,000
SEK
|
— |
361,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — |
191,000,000
SEK
|
— |
191,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — | — | — | — |
1,242,000,000
SEK
|
— |
1,315,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||
| Cash and cash equivalents | — | — | — | — |
66,000,000
SEK
|
— |
225,000,000
SEK
|
— | — | — | — | — | — |
71,000,000
SEK
|
— | — | — | — |
| Current assets | — | — | — | — |
588,000,000
SEK
|
— |
632,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Assets | — | — | — | — |
1,830,000,000
SEK
|
— |
1,947,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital | — | — | — | — |
89,000,000
SEK
|
— |
89,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — |
2,670,000,000
SEK
|
— |
2,602,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — |
1,160,000,000
SEK
|
— |
1,229,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
89,000,000
SEK
|
7,000,000
SEK
|
2,670,000,000
SEK
|
3,748,000,000
SEK
|
— |
1,160,000,000
SEK
|
— |
2,602,000,000
SEK
|
89,000,000
SEK
|
6,000,000
SEK
|
1,229,000,000
SEK
|
3,748,000,000
SEK
|
2,688,000,000
SEK
|
— |
3,748,000,000
SEK
|
1,140,000,000
SEK
|
9,000,000
SEK
|
89,000,000
SEK
|
| Liabilities [abstract] | ||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||
| Deferred tax liabilities | — | — | — | — |
55,000,000
SEK
|
— |
60,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — | — | — | — |
97,000,000
SEK
|
— |
149,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||
| Current liabilities | — | — | — | — |
573,000,000
SEK
|
— |
569,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — |
1,830,000,000
SEK
|
— |
1,947,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |