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 |
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 |
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 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 |
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 |
30 453
SEK
|
— | — | — | — | — |
4 317
SEK
|
41 5
SEK
|
18 796
SEK
|
136,000,000
SEK
|
30 038
SEK
|
6 789
SEK
|
— | — | — |
16 579
SEK
|
1 245
SEK
|
6 789
SEK
|
— | — |
25 176
SEK
|
24 750
SEK
|
427,000,000
SEK
|
— |
136,000,000
SEK
|
— | — | — |
14 422
SEK
|
462,000,000
SEK
|
6 789
SEK
|
21 024
SEK
|
136,000,000
SEK
|
32 3
SEK
|
21 486
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — |
2 516
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
3 000
SEK
|
— | — | — | — | — | — | — | — |
| Other comprehensive income | — | — | — |
3 924
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1 580
SEK
|
— | — | — | — | — | — | — | — |
| Comprehensive income | — |
–
SEK
|
3 072
SEK
|
6 440
SEK
|
3 307
SEK
|
62,000,000
SEK
|
— | — | — | — | — | — |
6 378
SEK
|
–
SEK
|
37,000,000
SEK
|
— | — | — |
1 568
SEK
|
4 543
SEK
|
— | — | — |
–
SEK
|
— |
–
SEK
|
4 580
SEK
|
2 974
SEK
|
— | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
–
SEK
|
–
SEK
|
1 111
SEK
|
1 0 89
SEK
|
2 1
SEK
|
— | — | — | — | — | — |
1 0 89
SEK
|
–
SEK
|
41,000,000
SEK
|
— | — | — |
–
SEK
|
817,000,000
SEK
|
— | — | — |
–
SEK
|
— |
–
SEK
|
858,000,000
SEK
|
817,000,000
SEK
|
— | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity | — |
–
SEK
|
–
SEK
|
53,000,000
SEK
|
–
SEK
|
53,000,000
SEK
|
— | — | — | — | — | — |
–
SEK
|
–
SEK
|
32,000,000
SEK
|
— | — | — |
–
SEK
|
–
SEK
|
— | — | — |
–
SEK
|
— |
–
SEK
|
32,000,000
SEK
|
–
SEK
|
— | — | — | — | — | — | — |