Statement Of Changes In Equity [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
2024-01-01 to 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 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
2023-01-01 to 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 |
2023-01-01 to 2023-12-31 |
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 |
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 |
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 |
As at 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||
| Equity | — |
1 886
SEK
|
— |
1,000,000
SEK
|
–
SEK
|
317,000,000
SEK
|
— |
2 611
SEK
|
— | — |
13,000,000
SEK
|
— |
420,000,000
SEK
|
2 611
SEK
|
— |
2 397
SEK
|
— |
1 588
SEK
|
— | — |
–
SEK
|
— |
1,000,000
SEK
|
255,000,000
SEK
|
2 398
SEK
|
16,000,000
SEK
|
— |
571,000,000
SEK
|
— |
2 334
SEK
|
2,000,000
SEK
|
1 331
SEK
|
1,000,000
SEK
|
289,000,000
SEK
|
2 331
SEK
|
646,000,000
SEK
|
65,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||
| Profit (loss) |
275,000,000
SEK
|
— | — | — | — | — |
275,000,000
SEK
|
— |
275,000,000
SEK
|
— | — | — | — | — |
273,000,000
SEK
|
— |
269,000,000
SEK
|
— |
4,000,000
SEK
|
269,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — | — |
79,000,000
SEK
|
— | — | — | — | — |
128,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
354,000,000
SEK
|
— |
62,000,000
SEK
|
— | — | — |
289,000,000
SEK
|
— |
354,000,000
SEK
|
4,000,000
SEK
|
— | — | — | — |
146,000,000
SEK
|
— |
141,000,000
SEK
|
— |
4,000,000
SEK
|
257,000,000
SEK
|
— |
34,000,000
SEK
|
— | — | — | — | — | — |
81,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
150,000,000
SEK
|
— | — | — | — | — | — | — |
150,000,000
SEK
|
— | — |
150,000,000
SEK
|
— | — |
75,000,000
SEK
|
— |
75,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
75,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
10,000,000
SEK
|
— | — | — | — | — |
10,000,000
SEK
|
— |
10,000,000
SEK
|
— | — | — | — | — |
0
SEK
|
— |
0
SEK
|
— | — |
0
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |