Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
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 |
2 094 623
SEK
|
1,000
SEK
|
3 449 915
SEK
|
1 366 987
SEK
|
11 694
SEK
|
— | — |
1 817 317
SEK
|
— |
1,000
SEK
|
78 752
SEK
|
— |
2 482 063
SEK
|
743 499
SEK
|
1,000
SEK
|
1 870 236
SEK
|
169 436
SEK
|
1 740 943
SEK
|
40 142
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||
| Profit (loss) | — | — | — | — | — |
278 444
SEK
|
278 444
SEK
|
— |
76 333
SEK
|
— | — |
76 333
SEK
|
— | — | — | — | — | — | — |
| Comprehensive income | — | — | — | — | — |
278 444
SEK
|
278 444
SEK
|
— |
76 333
SEK
|
— | — |
76 333
SEK
|
— | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — | — | — |
1 138
SEK
|
1 138
SEK
|
— |
41,000
SEK
|
— | — |
41,000
SEK
|
— | — | — | — | — | — | — |