Statement Of Changes In Equity [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2024-01-01 to 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 |
2024-01-01 to 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 |
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 |
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 |
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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||
| Equity | — | — | — |
1,792,000,000
SEK
|
354,000,000
SEK
|
25,000,000
SEK
|
— | — |
4,078,000,000
SEK
|
— |
657,000,000
SEK
|
— |
1,276,000,000
SEK
|
4,102,000,000
SEK
|
— |
3,864,000,000
SEK
|
— | — |
1,741,000,000
SEK
|
— |
466,000,000
SEK
|
— |
28,000,000
SEK
|
354,000,000
SEK
|
— |
3,836,000,000
SEK
|
— |
1,276,000,000
SEK
|
3,870,000,000
SEK
|
532,000,000
SEK
|
36,000,000
SEK
|
1,673,000,000
SEK
|
354,000,000
SEK
|
3,835,000,000
SEK
|
1,276,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||
| Profit (loss) |
—
SEK
|
176,000,000
SEK
|
—
SEK
|
— | — | — |
176,000,000
SEK
|
7,000,000
SEK
|
— |
183,000,000
SEK
|
— |
—
SEK
|
— | — |
258,000,000
SEK
|
— |
248,000,000
SEK
|
—
SEK
|
— |
10,000,000
SEK
|
— |
248,000,000
SEK
|
— | — |
—
SEK
|
— |
—
SEK
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
190,000,000
SEK
|
190,000,000
SEK
|
—
SEK
|
— | — | — |
0
SEK
|
0
SEK
|
— |
190,000,000
SEK
|
— |
—
SEK
|
— | — |
61,000,000
SEK
|
— |
62,000,000
SEK
|
66,000,000
SEK
|
— |
1,000,000
SEK
|
— |
4,000,000
SEK
|
— | — |
—
SEK
|
— |
—
SEK
|
— | — | — | — | — | — | — | — |
| Comprehensive income | — | — | — | — | — | — | — | — | — |
373,000,000
SEK
|
— | — | — | — |
197,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
—
SEK
|
21,000,000
SEK
|
—
SEK
|
— | — | — |
21,000,000
SEK
|
—
SEK
|
— |
21,000,000
SEK
|
— |
—
SEK
|
— | — |
38,000,000
SEK
|
— |
38,000,000
SEK
|
—
SEK
|
— |
—
SEK
|
— |
38,000,000
SEK
|
— | — |
—
SEK
|
— |
—
SEK
|
— | — | — | — | — | — | — | — |