Statement Of Changes In Equity [Abstract]
| Concept |
2024-01-01 to 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 |
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 |
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 |
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 | — |
541,000,000
SEK
|
1 150
SEK
|
— |
4,000,000
SEK
|
19,000,000
SEK
|
31,000,000
SEK
|
— | — |
1 664
SEK
|
— |
1 683
SEK
|
— |
1 513
SEK
|
— |
346,000,000
SEK
|
— | — |
34,000,000
SEK
|
— |
1 150
SEK
|
4,000,000
SEK
|
21,000,000
SEK
|
1 479
SEK
|
1 336
SEK
|
35,000,000
SEK
|
1 074
SEK
|
143,000,000
SEK
|
4,000,000
SEK
|
80,000,000
SEK
|
1 301
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||
| Profit (loss) |
196,000,000
SEK
|
— | — | — | — | — | — |
196,000,000
SEK
|
1,000,000
SEK
|
— |
197,000,000
SEK
|
— |
218,000,000
SEK
|
— |
216,000,000
SEK
|
— |
2,000,000
SEK
|
216,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
10,000,000
SEK
|
— | — |
10,000,000
SEK
|
— | — | — | — |
1,000,000
SEK
|
— |
11,000,000
SEK
|
— |
103,000,000
SEK
|
— |
101,000,000
SEK
|
— |
2,000,000
SEK
|
— | — |
101,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
186,000,000
SEK
|
— | — |
10,000,000
SEK
|
— | — | — |
196,000,000
SEK
|
0
SEK
|
— |
186,000,000
SEK
|
— |
115,000,000
SEK
|
— |
115,000,000
SEK
|
— |
0
SEK
|
216,000,000
SEK
|
— |
101,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
3,000,000
SEK
|
— | — | — | — | — | — |
3,000,000
SEK
|
9,000,000
SEK
|
— |
12,000,000
SEK
|
— |
1,000,000
SEK
|
— | — | — |
1,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
60,000,000
SEK
|
— | — | — | — | — | — |
60,000,000
SEK
|
— | — |
60,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
5,000,000
SEK
|
— | — | — | — | — | — |
5,000,000
SEK
|
— | — |
5,000,000
SEK
|
— |
4,000,000
SEK
|
— |
4,000,000
SEK
|
— | — |
4,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |