Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
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 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||
| Equity | — |
609,751,000
SEK
|
18,366,000
SEK
|
796,845,000
SEK
|
439,977,000
SEK
|
2,032,000
SEK
|
236,549,000
SEK
|
— | — | — |
631,663,000
SEK
|
406,000
SEK
|
796,845,000
SEK
|
236,549,000
SEK
|
— |
10,544,000
SEK
|
411,869,000
SEK
|
— |
76,000
SEK
|
52,636,000
SEK
|
796,845,000
SEK
|
528,671,000
SEK
|
557,435,000
SEK
|
236,549,000
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||
| Profit (loss) |
1,626,000
SEK
|
— | — | — | — | — | — |
2,818,000
SEK
|
4,444,000
SEK
|
65,604,000
SEK
|
— | — | — | — |
65,129,000
SEK
|
— | — |
475,000
SEK
|
— | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — |
24,551,000
SEK
|
— |
50,752,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — | — | — | — | — | — | — |
27,369,000
SEK
|
— |
116,356,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |