Statement Of Changes In Equity [Abstract]
| Concept |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 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 |
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 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||
| Equity |
1 195 820
SEK
|
— | — | — |
269,000
SEK
|
591 493
SEK
|
1 870
SEK
|
124 045
SEK
|
1 195 551
SEK
|
478 143
SEK
|
— | — | — |
280 307
SEK
|
478 143
SEK
|
— |
773 846
SEK
|
— |
773 426
SEK
|
420,000
SEK
|
13 106
SEK
|
1 870
SEK
|
— | — |
276 078
SEK
|
228,000
SEK
|
478 143
SEK
|
699 707
SEK
|
1 870
SEK
|
56 384
SEK
|
699 935
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||
| Profit (loss) | — |
417 144
SEK
|
416 963
SEK
|
181,000
SEK
|
— | — | — | — | — | — |
416 963
SEK
|
— |
338,000
SEK
|
— | — |
284 917
SEK
|
— | — | — | — | — | — |
285 255
SEK
|
284 917
SEK
|
— | — | — | — | — | — | — |
| Other comprehensive income | — |
110 939
SEK
|
— | — | — | — | — | — | — | — |
110 939
SEK
|
110 939
SEK
|
— | — | — |
69 490
SEK
|
— |
69 490
SEK
|
— | — | — | — |
69 490
SEK
|
— | — | — | — | — | — | — | — |
| Comprehensive income | — |
528 083
SEK
|
416 963
SEK
|
181,000
SEK
|
— | — | — | — | — | — |
527 902
SEK
|
124 045
SEK
|
338,000
SEK
|
— | — |
354 407
SEK
|
— |
69 490
SEK
|
— | — | — | — |
354 745
SEK
|
284 917
SEK
|
— | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
112 515
SEK
|
112 183
SEK
|
332,000
SEK
|
— | — | — | — | — | — |
112 183
SEK
|
— |
146,000
SEK
|
— | — |
280 457
SEK
|
— | — | — | — | — | — |
280 603
SEK
|
280 457
SEK
|
— | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — |
666,000
SEK
|
666,000
SEK
|
— | — | — | — | — | — | — |
666,000
SEK
|
— | — | — | — |
2 417
SEK
|
— | — | — | — | — | — |
2 417
SEK
|
2 417
SEK
|
— | — | — | — | — | — | — |