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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Right-of-use assets | — | — | — |
43,000,000
SEK
|
— |
26,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
3,033,000,000
SEK
|
— |
1,277,000,000
SEK
|
— | — | — | — |
1,440,000,000
SEK
|
— | — | — | — |
| Assets | — | — | — |
7,602,000,000
SEK
|
— |
5,611,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital | — | — | — |
154,000,000
SEK
|
— |
113,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — |
1 266,5
SEK
|
— |
9,396,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — |
167,000,000
SEK
|
— |
61,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity |
154,000,000
SEK
|
1 780,0
SEK
|
1 266,5
SEK
|
5,456,000,000
SEK
|
167,000,000
SEK
|
5,062,000,000
SEK
|
9,396,000,000
SEK
|
113,000,000
SEK
|
61,000,000
SEK
|
1 428,4
SEK
|
5,270,000,000
SEK
|
7,458,000,000
SEK
|
13,000,000
SEK
|
1 262,8
SEK
|
87,000,000
SEK
|
| Equity and liabilities | — | — | — |
7,602,000,000
SEK
|
— |
5,611,000,000
SEK
|
— | — | — | — | — | — | — | — | — |