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 |
2022-01-01 to 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 |
2021-01-01 to 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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||
| Equity |
8 911
SEK
|
— | — | — | — |
4 282
SEK
|
4 259
SEK
|
157,000,000
SEK
|
76,000,000
SEK
|
8 911
SEK
|
— |
136,000,000
SEK
|
— | — |
3 902
SEK
|
— | — |
8 323
SEK
|
— |
28,000,000
SEK
|
— |
8 323
SEK
|
4 282
SEK
|
47,000,000
SEK
|
157,000,000
SEK
|
— | — | — |
3 547
SEK
|
261,000,000
SEK
|
3 236
SEK
|
136,000,000
SEK
|
18 7
SEK
|
–
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
–
SEK
|
323,000,000
SEK
|
323,000,000
SEK
|
–
SEK
|
— | — | — | — | — |
323,000,000
SEK
|
— |
–
SEK
|
–
SEK
|
— |
–
SEK
|
325,000,000
SEK
|
— |
–
SEK
|
— |
–
SEK
|
— | — | — | — |
–
SEK
|
325,000,000
SEK
|
325,000,000
SEK
|
— | — | — | — | — | — |
| Other comprehensive income | — |
–
SEK
|
231,000,000
SEK
|
–
SEK
|
108,000,000
SEK
|
— | — | — | — | — |
231,000,000
SEK
|
— |
–
SEK
|
123,000,000
SEK
|
— |
289,000,000
SEK
|
429,000,000
SEK
|
— |
–
SEK
|
— |
14 0
SEK
|
— | — | — | — |
–
SEK
|
429,000,000
SEK
|
–
SEK
|
— | — | — | — | — | — |
| Comprehensive income | — |
–
SEK
|
554,000,000
SEK
|
323,000,000
SEK
|
108,000,000
SEK
|
— | — | — | — | — |
554,000,000
SEK
|
— |
–
SEK
|
123,000,000
SEK
|
— |
289,000,000
SEK
|
754,000,000
SEK
|
— |
–
SEK
|
— |
14 0
SEK
|
— | — | — | — |
–
SEK
|
754,000,000
SEK
|
325,000,000
SEK
|
— | — | — | — | — | — |
| Issue of equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
–
SEK
|
4 346
SEK
|
— |
4 325
SEK
|
— |
–
SEK
|
— | — | — | — |
21,000,000
SEK
|
— |
–
SEK
|
— | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
–
SEK
|
–
SEK
|
— |
–
SEK
|
— |
–
SEK
|
— | — | — | — |
–
SEK
|
— |
–
SEK
|
— | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
–
SEK
|
— |
34,000,000
SEK
|
–
SEK
|
— | — | — | — | — |
34,000,000
SEK
|
— |
–
SEK
|
–
SEK
|
— |
–
SEK
|
30,000,000
SEK
|
— |
–
SEK
|
— |
–
SEK
|
— | — | — | — |
–
SEK
|
— |
30,000,000
SEK
|
— | — | — | — | — | — |