Statement Of Changes In Equity [Abstract]
| Concept |
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 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 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 |
2020-01-01 to 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 |
As at 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 | — |
21 768
SEK
|
1 660
SEK
|
23 956
SEK
|
13,000,000
SEK
|
60,000,000
SEK
|
576,000,000
SEK
|
— | — | — | — | — |
15 507
SEK
|
20,000,000
SEK
|
— |
576,000,000
SEK
|
— | — |
17 74 6
SEK
|
1 660
SEK
|
17 70 2
SEK
|
60,000,000
SEK
|
— |
13 573
SEK
|
536,000,000
SEK
|
19,000,000
SEK
|
38,000,000
SEK
|
715,000,000
SEK
|
12 3 41
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||
| Profit (loss) |
10,000,000
SEK
|
— | — | — | — | — | — |
6 362
SEK
|
6 352
SEK
|
1,000,000
SEK
|
3 235
SEK
|
3 290
SEK
|
— | — | — | — | — | — | — | — | — | — |
3 236
SEK
|
— | — | — | — | — | — |
| Other comprehensive income |
0
SEK
|
— | — | — | — | — | — |
0
SEK
|
0
SEK
|
0
SEK
|
— |
0
SEK
|
— | — | — | — | — |
23,000,000
SEK
|
— | — | — | — |
23,000,000
SEK
|
— | — | — | — | — | — |
| Comprehensive income | — | — | — | — | — | — | — |
6 362
SEK
|
— | — | — |
3 290
SEK
|
— | — | — | — | — | — | — | — | — | — |
3 213
SEK
|
— | — | — | — | — | — |
| Issue of equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
945,000,000
SEK
|
— |
40,000,000
SEK
|
— | — | — | — | — |
985,000,000
SEK
|
— | — | — | — | — | — |