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 |
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 |
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 |
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 |
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 |
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 |
306,000,000
SEK
|
— | — | — | — |
1,000,000
SEK
|
5 579
SEK
|
274,000,000
SEK
|
275,000,000
SEK
|
305,000,000
SEK
|
5 885
SEK
|
— | — | — | — |
6 039
SEK
|
5 885
SEK
|
— |
94,000,000
SEK
|
— |
93,000,000
SEK
|
— |
300,000,000
SEK
|
547,000,000
SEK
|
1,000,000
SEK
|
— | — | — |
5 932
SEK
|
10,000,000
SEK
|
5 885
SEK
|
195,000,000
SEK
|
547,000,000
SEK
|
305,000,000
SEK
|
205,000,000
SEK
|
12,000,000
SEK
|
12,000,000
SEK
|
12,000,000
SEK
|
-
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
-
SEK
|
47,000,000
SEK
|
48,000,000
SEK
|
1,000,000
SEK
|
— | — | — | — | — | — |
48,000,000
SEK
|
— |
-
SEK
|
2,000,000
SEK
|
— | — |
107,000,000
SEK
|
— |
-
SEK
|
— |
-
SEK
|
— | — | — |
-
SEK
|
105,000,000
SEK
|
107,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — |
165,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
5,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — |
-
SEK
|
212,000,000
SEK
|
186,000,000
SEK
|
0
SEK
|
— | — | — | — | — | — |
212,000,000
SEK
|
26,000,000
SEK
|
-
SEK
|
4,000,000
SEK
|
— | — |
114,000,000
SEK
|
— |
5,000,000
SEK
|
— |
-
SEK
|
— | — | — |
-
SEK
|
110,000,000
SEK
|
119,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |