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 |
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 |
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 |
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 | — |
27 035
SEK
|
— |
2 174
SEK
|
309,000,000
SEK
|
1 250
SEK
|
— | — |
35 503
SEK
|
— | — |
1 055
SEK
|
6 099
SEK
|
35 812
SEK
|
— |
32 362
SEK
|
— |
22 164
SEK
|
— | — |
327,000,000
SEK
|
— |
2 174
SEK
|
785,000,000
SEK
|
32 035
SEK
|
813,000,000
SEK
|
6 099
SEK
|
— |
29 876
SEK
|
390,000,000
SEK
|
19 845
SEK
|
2 174
SEK
|
1 192
SEK
|
29 486
SEK
|
6 099
SEK
|
176,000,000
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | — | — | — |
4 210
SEK
|
— | — | — | — |
3 443
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — | — | — |
258,000,000
SEK
|
— | — | — | — |
358,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
4 408
SEK
|
— |
465,000,000
SEK
|
— | — | — |
5 811
SEK
|
60,000,000
SEK
|
— |
4 468
SEK
|
1 868
SEK
|
— | — | — |
3 085
SEK
|
— |
3 038
SEK
|
— |
47,000,000
SEK
|
2 808
SEK
|
— |
407,000,000
SEK
|
— | — | — | — | — |
637,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
856,000,000
SEK
|
— | — | — | — | — |
856,000,000
SEK
|
79,000,000
SEK
|
— |
935,000,000
SEK
|
— | — | — | — |
823,000,000
SEK
|
— |
703,000,000
SEK
|
— |
120,000,000
SEK
|
703,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
318,000,000
SEK
|
— | — | — | — | — |
318,000,000
SEK
|
— | — |
318,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |
1,000,000
SEK
|
— | — | — | — | — |
1,000,000
SEK
|
1,000,000
SEK
|
— |
0
SEK
|
— | — | — | — |
10,000,000
SEK
|
— |
-
SEK
|
— |
10,000,000
SEK
|
-
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
235,000,000
SEK
|
— | — | — | — | — |
235,000,000
SEK
|
— | — |
235,000,000
SEK
|
— | — | — | — |
214,000,000
SEK
|
— |
214,000,000
SEK
|
— | — |
214,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |