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 2024-01-01 |
As at 2024-01-01 |
As at 2024-01-01 |
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 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||
| Cash and cash equivalents | — | — | — | — |
5,021,000,000
SEK
|
— | — |
3,057,000,000
SEK
|
— | — |
3,057,000,000
SEK
|
— | — | — | — | — | — | — | — |
1,864,000,000
SEK
|
| Assets | — | — | — | — |
4 252,1
SEK
|
— | — | — | — | — |
3 933,6
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||
| Issued capital | — | — | — | — |
53,000,000
SEK
|
— | — | — | — | — |
53,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — |
4 240,9
SEK
|
— | — | — | — | — |
3 918,3
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity |
4 240,9
SEK
|
11,000,000
SEK
|
53,000,000
SEK
|
4 247,3
SEK
|
4 247,3
SEK
|
3 918,3
SEK
|
3 924,7
SEK
|
— |
11,000,000
SEK
|
53,000,000
SEK
|
3 924,7
SEK
|
3 918,3
SEK
|
11,000,000
SEK
|
53,000,000
SEK
|
3 924,7
SEK
|
3 778,6
SEK
|
3 778,6
SEK
|
53,000,000
SEK
|
11,000,000
SEK
|
— |
| Liabilities [abstract] | ||||||||||||||||||||
| Liabilities | — | — | — | — |
48,000,000
SEK
|
— | — | — | — | — |
89,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — |
4 252,1
SEK
|
— | — | — | — | — |
3 933,6
SEK
|
— | — | — | — | — | — | — | — | — |