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 |
As at 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 |
As at 2020-12-31 |
2020-01-01 to 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 |
163 539
SEK
|
58 161
SEK
|
243 648
SEK
|
— |
609,000
SEK
|
22 557
SEK
|
— | — | — |
150 364
SEK
|
58 161
SEK
|
22 557
SEK
|
— |
984,000
SEK
|
230 098
SEK
|
— |
433,000
SEK
|
58 161
SEK
|
222 501
SEK
|
142 216
SEK
|
22 557
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — |
13 175
SEK
|
13 175
SEK
|
8 148
SEK
|
— | — | — |
8 148
SEK
|
— | — | — | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — |
375,000
SEK
|
— |
551,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — | — | — |
375,000
SEK
|
— | — |
13 550
SEK
|
13 175
SEK
|
7 597
SEK
|
— | — | — |
8 148
SEK
|
— | — |
551,000
SEK
|
— | — | — | — | — |
| Increase (decrease) through other changes, equity | — | — | — |
375,000
SEK
|
— | — |
375,000
SEK
|
— |
551,000
SEK
|
— | — | — | — | — | — |
551,000
SEK
|
— | — | — | — | — |