Statement Of Changes In Equity [Abstract]
| Concept |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 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 |
2022-01-01 to 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
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 |
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 |
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 |
204 523
SEK
|
— |
20 439
SEK
|
— |
175,000,000
SEK
|
— | — |
161 387
SEK
|
21 942
SEK
|
868,000,000
SEK
|
— |
62,000,000
SEK
|
— |
152 290
SEK
|
— |
193 228
SEK
|
18,000,000
SEK
|
— |
223,000,000
SEK
|
— | — |
19 798
SEK
|
561,000,000
SEK
|
21 942
SEK
|
— | — |
145 788
SEK
|
47,000,000
SEK
|
21 942
SEK
|
236,000,000
SEK
|
5 737
SEK
|
1 241
SEK
|
171 943
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||
| Profit (loss) | — |
26 989
SEK
|
— |
26 989
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
25 423
SEK
|
25 423
SEK
|
— | — | — | — | — | — | — |
| Other comprehensive income | — |
2 198
SEK
|
— | — | — |
81,000,000
SEK
|
48,000,000
SEK
|
— | — | — |
641,000,000
SEK
|
— |
1 429
SEK
|
— |
29,000,000
SEK
|
— | — |
14,000,000
SEK
|
— |
14 061
SEK
|
680,000,000
SEK
|
— | — | — |
14 783
SEK
|
— | — | — | — | — | — | — | — |
| Comprehensive income | — |
29 187
SEK
|
— |
26 989
SEK
|
— |
81,000,000
SEK
|
48,000,000
SEK
|
— | — | — |
641,000,000
SEK
|
— |
1 429
SEK
|
— |
29,000,000
SEK
|
— | — |
14,000,000
SEK
|
— |
14 061
SEK
|
680,000,000
SEK
|
— | — | — |
40 206
SEK
|
25 423
SEK
|
— | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
12 884
SEK
|
— |
12 884
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
17 740
SEK
|
17 740
SEK
|
— | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — |
2 965
SEK
|
— |
2 965
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1 015
SEK
|
1 015
SEK
|
— | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
167,000,000
SEK
|
— |
167,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
167,000,000
SEK
|
167,000,000
SEK
|
— | — | — | — | — | — | — |