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 |
2021-01-01 to 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 |
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 |
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 |
As at 2020-12-31 |
2020-01-01 to 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 | — |
4 012 743
SEK
|
270 796
SEK
|
1 441 949
SEK
|
— | — |
5 816 275
SEK
|
5 816 275
SEK
|
5 542
SEK
|
96 329
SEK
|
— | — | — | — |
3 460 051
SEK
|
25 359
SEK
|
1 439 975
SEK
|
5 062 893
SEK
|
96 329
SEK
|
— |
41 179
SEK
|
— | — |
5 062 893
SEK
|
— | — |
4 899 053
SEK
|
1 425
SEK
|
441 035
SEK
|
1 438 757
SEK
|
2 921 507
SEK
|
96 329
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||
| Profit (loss) |
25 399
SEK
|
— | — | — | — | — | — | — | — | — | — |
1 054 445
SEK
|
1 054 444
SEK
|
990 792
SEK
|
— | — | — | — | — |
990 792
SEK
|
— | — | — | — |
15 690
SEK
|
1 006 482
SEK
|
— | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — | — | — | — | — |
229 617
SEK
|
— |
399 856
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
25 399
SEK
|
— | — | — |
229 617
SEK
|
1 309 460
SEK
|
— | — | — | — | — |
1 284 062
SEK
|
1 054 444
SEK
|
590 936
SEK
|
— | — | — | — | — |
990 792
SEK
|
— |
399 856
SEK
|
— | — |
15 690
SEK
|
606 626
SEK
|
— | — | — | — | — | — |
| Increase (decrease) through other changes, equity | — | — | — | — | — |
1 974
SEK
|
— | — | — | — |
1 974
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
1 218
SEK
|
— | — |
1 218
SEK
|
— | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
60 059
SEK
|
— | — | — | — | — |
60 059
SEK
|
— | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — | — | — |
1 428
SEK
|
— | — | — | — | — | — |
1 428
SEK
|
— | — | — | — | — | — |
1 369
SEK
|
— | — | — | — | — |
1 369
SEK
|
— | — | — | — | — | — |