Statement Of Changes In Equity [Abstract]
| Concept |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||
| Equity |
1,000,000
SEK
|
424,000,000
SEK
|
1 347
SEK
|
— |
1 772
SEK
|
— |
1 281
SEK
|
— |
1,000,000
SEK
|
— |
859,000,000
SEK
|
— | — |
421,000,000
SEK
|
982,000,000
SEK
|
561,000,000
SEK
|
420,000,000
SEK
|
1,000,000
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||
| Profit (loss) | — | — | — |
570,000,000
SEK
|
— |
570,000,000
SEK
|
— | — | — |
347,000,000
SEK
|
— |
347,000,000
SEK
|
— | — | — | — | — | — |
| Other comprehensive income | — | — | — |
-
SEK
|
— | — | — | — | — |
-
SEK
|
— | — | — | — | — | — | — | — |
| Comprehensive income | — | — | — |
570,000,000
SEK
|
— |
570,000,000
SEK
|
— | — | — |
347,000,000
SEK
|
— |
347,000,000
SEK
|
— | — | — | — | — | — |
| Issue of equity | — | — | — | — | — | — | — |
0
SEK
|
— |
1,000,000
SEK
|
— | — |
1,000,000
SEK
|
— | — | — | — | — |
| Dividends recognised as distributions to owners | — | — | — |
73,000,000
SEK
|
— |
73,000,000
SEK
|
— | — | — |
49,000,000
SEK
|
— |
49,000,000
SEK
|
— | — | — | — | — | — |