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 |
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 |
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 |
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 |
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 |
5 429
SEK
|
— | — |
1 181
SEK
|
3 442
SEK
|
1 7
SEK
|
3,000,000
SEK
|
5 429
SEK
|
7 8 6
SEK
|
— | — |
3 232
SEK
|
7 86
SEK
|
— |
5 216
SEK
|
— |
5 216
SEK
|
1 181
SEK
|
–
SEK
|
17,000,000
SEK
|
— | — |
2 075
SEK
|
4 053
SEK
|
17,000,000
SEK
|
— |
78 6
SEK
|
–
SEK
|
1 175
SEK
|
— | — |
3 840
SEK
|
78 6
SEK
|
–
SEK
|
1 165
SEK
|
1 872
SEK
|
17,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
26 8
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1 209
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — |
3,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
–
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — |
27 1
SEK
|
2 6 8
SEK
|
— | — | — | — | — | — |
27 1
SEK
|
3,000,000
SEK
|
— | — |
1 209
SEK
|
— | — | — | — | — | — |
1 209
SEK
|
1 209
SEK
|
— | — | — |
25 6
SEK
|
— | — | — | — |
256,000,000
SEK
|
— | — | — | — | — | — |
| Decrease through other distributions to owners, equity | — | — |
58,000,000
SEK
|
— | — | — | — | — | — |
58,000,000
SEK
|
— | — | — |
52,000,000
SEK
|
— | — | — | — | — | — | — |
52,000,000
SEK
|
— | — | — |
54,000,000
SEK
|
— | — | — | — |
5 4
SEK
|
— | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — | — | — | — | — | — | — | — | — | — | — |
6,000,000
SEK
|
— |
6,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
18,000,000
SEK
|
18,000,000
SEK
|
— | — | — | — | — | — |