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 |
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 |
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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||
| Equity |
38 024
SEK
|
— | — | — | — |
1 375
SEK
|
55,000,000
SEK
|
36 582
SEK
|
121,000,000
SEK
|
133,000,000
SEK
|
— |
1 6 4
SEK
|
31 227
SEK
|
3 57
SEK
|
— |
31 686
SEK
|
133,000,000
SEK
|
133,000,000
SEK
|
— | — |
29 018
SEK
|
81,000,000
SEK
|
133,000,000
SEK
|
83,000,000
SEK
|
1,000,000
SEK
|
29 148
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||
| Profit (loss) | — | — |
4 168
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
4 381
SEK
|
— | — | — | — | — | — | — |
| Other comprehensive income | — | — |
4 398
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
129,000,000
SEK
|
— | — | — | — | — | — | — |
| Comprehensive income | — |
1 018
SEK
|
8 566
SEK
|
7 54 4
SEK
|
4,000,000
SEK
|
— | — | — | — | — |
5,000,000
SEK
|
— | — | — |
358,000,000
SEK
|
— | — | — |
4 510
SEK
|
4 147
SEK
|
— | — | — | — | — | — |
| Dividends recognised as distributions to owners | — | — |
2 110
SEK
|
2 110
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
1 918
SEK
|
1 918
SEK
|
— | — | — | — | — | — |