Statement Of Changes In Equity [Abstract]
| Concept |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 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 |
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 |
268 037
SEK
|
27 483
SEK
|
390 377
SEK
|
— |
796 869
SEK
|
— |
110 972
SEK
|
— | — | — | — |
299 113
SEK
|
393 159
SEK
|
110 972
SEK
|
— |
15 801
SEK
|
— | — | — |
819 045
SEK
|
34 908
SEK
|
404 415
SEK
|
810 237
SEK
|
259 942
SEK
|
110 972
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | — | — |
79 133
SEK
|
79 133
SEK
|
127 476
SEK
|
— | — | — |
127 476
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — | — |
11 682
SEK
|
— | — | — | — |
11 682
SEK
|
— |
19 107
SEK
|
— | — | — | — | — |
19 107
SEK
|
— | — | — | — | — | — | — | — |
| Comprehensive income | — | — | — |
11 682
SEK
|
— |
–
SEK
|
— |
–
SEK
|
90 815
SEK
|
79 133
SEK
|
108 369
SEK
|
— | — | — |
127 476
SEK
|
— |
19 107
SEK
|
–
SEK
|
–
SEK
|
— | — | — | — | — | — |
| Dividends recognised as distributions to owners | — | — | — | — | — | — | — | — |
110 209
SEK
|
110 209
SEK
|
88 305
SEK
|
— | — | — |
88 305
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — | — | — | — | — |
4 853
SEK
|
4 853
SEK
|
— |
2 633
SEK
|
— | — | — | — | — | — |
2 633
SEK
|
— | — | — | — | — | — | — |