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 2024-01-01 |
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 2023-01-01 |
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] | |||||||||||||||||
| Property, plant and equipment | — |
19,000,000
SEK
|
— | — | — | — | — | — |
25,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Cash and cash equivalents | — |
843,000,000
SEK
|
— | — | — |
869,000,000
SEK
|
— | — |
869,000,000
SEK
|
— | — |
795,000,000
SEK
|
— | — | — | — | — |
| Assets | — |
167 444
SEK
|
— | — | — | — | — | — |
158 526
SEK
|
— | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||
| Equity [abstract] | |||||||||||||||||
| Issued capital | — |
1 088
SEK
|
— | — | — | — | — | — |
1 088
SEK
|
— | — | — | — | — | — | — | — |
| Equity |
1 063
SEK
|
159 178
SEK
|
1 088
SEK
|
144 373
SEK
|
12 654
SEK
|
— |
1 088
SEK
|
1 063
SEK
|
149 880
SEK
|
120 885
SEK
|
26 844
SEK
|
— |
126 180
SEK
|
137 996
SEK
|
1 088
SEK
|
13 967
SEK
|
1 063
SEK
|
| Liabilities [abstract] | |||||||||||||||||
| Deferred tax liabilities | — |
228,000,000
SEK
|
— | — | — | — | — | — |
228,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Equity and liabilities | — |
167 444
SEK
|
— | — | — | — | — | — |
158 526
SEK
|
— | — | — | — | — | — | — | — |