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 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 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 |
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 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||
| Equity | — |
4 838
SEK
|
— |
3 137
SEK
|
— | — | — |
1 182
SEK
|
17,000,000
SEK
|
3,000,000
SEK
|
4 838
SEK
|
49 8
SEK
|
5 429
SEK
|
— | — |
1 181
SEK
|
3 442
SEK
|
17,000,000
SEK
|
3,000,000
SEK
|
5 429
SEK
|
78 6
SEK
|
— | — |
3 232
SEK
|
78 6
SEK
|
— | — |
5 216
SEK
|
1 181
SEK
|
–
SEK
|
17,000,000
SEK
|
— |
2 075
SEK
|
4 053
SEK
|
17,000,000
SEK
|
78 6
SEK
|
-
SEK
|
1 175
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
246,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
268,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
0
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
3,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
247,000,000
SEK
|
— |
246,000,000
SEK
|
— |
246,000,000
SEK
|
— |
0
SEK
|
— | — | — | — | — | — |
27 1
SEK
|
26 8
SEK
|
— | — | — | — | — | — |
27 1
SEK
|
3,000,000
SEK
|
— | — |
1 209
SEK
|
— | — | — | — | — |
1 209
SEK
|
— | — | — | — | — | — |
| Decrease through other distributions to owners, equity | — | — |
5 9
SEK
|
— |
59,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
5 8
SEK
|
— | — | — | — | — | — |
5 8
SEK
|
— | — | — |
5 2
SEK
|
— | — | — | — | — |
52,000,000
SEK
|
— | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — |
1,000,000
SEK
|
— | — |
1,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
6,000,000
SEK
|
6,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |