Statement Of Changes In Equity [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||
| Equity | — |
7 084
SEK
|
4 292
SEK
|
11 659
SEK
|
284,000,000
SEK
|
— |
284,000,000
SEK
|
— |
4 292
SEK
|
10 968
SEK
|
6 393
SEK
|
— |
12 102
SEK
|
284,000,000
SEK
|
7 526
SEK
|
4 292
SEK
|
| Changes in equity [abstract] | ||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||
| Profit (loss) |
691,000,000
SEK
|
— | — | — | — | — | — |
850,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
691,000,000
SEK
|
— | — | — | — |
691,000,000
SEK
|
— |
850,000,000
SEK
|
— | — | — |
850,000,000
SEK
|
— | — | — | — |
| Dividends recognised as distributions to owners | — | — | — | — | — | — | — |
283,000,000
SEK
|
— | — | — |
283,000,000
SEK
|
— | — | — | — |