Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 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 changes in equity [abstract] | |||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||
| Equity | — |
2 361
SEK
|
— |
1 892
SEK
|
8,000,000
SEK
|
— |
20,000,000
SEK
|
441,000,000
SEK
|
2 361
SEK
|
— | — | — |
34,000,000
SEK
|
1 865
SEK
|
20,000,000
SEK
|
441,000,000
SEK
|
1 784
SEK
|
6,000,000
SEK
|
441,000,000
SEK
|
2 252
SEK
|
20,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||
| Profit (loss) |
26,000,000
SEK
|
— | — | — | — |
26,000,000
SEK
|
— | — | — | — |
313,000,000
SEK
|
313,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Comprehensive income |
1,000,000
SEK
|
— |
27,000,000
SEK
|
— | — |
26,000,000
SEK
|
— | — | — |
28,000,000
SEK
|
341,000,000
SEK
|
313,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
–
SEK
|
— | — | — | — |
–
SEK
|
— | — | — | — |
235,000,000
SEK
|
235,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
1,000,000
SEK
|
— | — | — | — |
1,000,000
SEK
|
— | — | — | — |
2,000,000
SEK
|
2,000,000
SEK
|
— | — | — | — | — | — | — | — | — |