Statement Of Changes In Equity [Abstract]
| Concept |
As at 2021-12-31 |
As at 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 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||
| Equity |
1 158 416
SEK
|
114 519
SEK
|
— |
1 340 937
SEK
|
31 443
SEK
|
36 559
SEK
|
— | — |
888 815
SEK
|
— |
114 519
SEK
|
36 559
SEK
|
— | — | — | — |
1 050 971
SEK
|
11 078
SEK
|
45 993
SEK
|
799 883
SEK
|
693 682
SEK
|
24 974
SEK
|
35 234
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — |
342 082
SEK
|
342 082
SEK
|
— |
195 133
SEK
|
— | — |
195 133
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — |
20 365
SEK
|
— | — | — |
20 365
SEK
|
— | — |
13 896
SEK
|
— | — | — |
13 896
SEK
|
— | — | — | — | — | — | — | — | — |
| Comprehensive income | — | — |
20 365
SEK
|
— | — | — |
362 447
SEK
|
342 082
SEK
|
— |
181 237
SEK
|
— | — |
195 133
SEK
|
13 896
SEK
|
— | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — | — | — | — | — | — |
72 481
SEK
|
72 481
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — | — | — | — | — | — | — |
57 777
SEK
|
— | — | — | — |
56 452
SEK
|
1 325
SEK
|
— | — | — | — | — | — | — |