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 |
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 |
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 | — | — | — |
573,000,000
SEK
|
27,000,000
SEK
|
20,000,000
SEK
|
— | — |
2 332,4
SEK
|
— |
658,000,000
SEK
|
— |
2 321,2
SEK
|
2 334,4
SEK
|
— |
2 182,3
SEK
|
— | — |
7,129,000,000
SEK
|
— |
430,000,000
SEK
|
— |
-
SEK
|
— |
25,000,000
SEK
|
2 182,3
SEK
|
— |
1 423,9
SEK
|
2 092,5
SEK
|
885,000,000
SEK
|
5,781,000,000
SEK
|
25,000,000
SEK
|
2 092,5
SEK
|
1 423,4
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
24,000,000
SEK
|
— | — | — | — |
24,000,000
SEK
|
19,000,000
SEK
|
— |
6,000,000
SEK
|
— | — | — | — |
2,192,000,000
SEK
|
— |
2,192,000,000
SEK
|
— | — | — | — |
2,192,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — | — | — |
228,000,000
SEK
|
— | — | — | — |
454,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
228,000,000
SEK
|
253,000,000
SEK
|
-
SEK
|
— | — | — |
24,000,000
SEK
|
19,000,000
SEK
|
— |
234,000,000
SEK
|
— |
-
SEK
|
— | — |
1,737,000,000
SEK
|
— |
1,737,000,000
SEK
|
455,000,000
SEK
|
— |
-
SEK
|
— |
2,192,000,000
SEK
|
— |
-
SEK
|
— | — |
-
SEK
|
— | — | — | — | — | — | — |
| Issue of equity | — |
8,984,000,000
SEK
|
2,000,000
SEK
|
— | — | — | — | — | — |
8,984,000,000
SEK
|
— |
8,982,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
877,000,000
SEK
|
— | — | — | — |
877,000,000
SEK
|
— | — |
877,000,000
SEK
|
— | — | — | — |
844,000,000
SEK
|
— |
844,000,000
SEK
|
— | — | — | — |
844,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity | — |
5,000,000
SEK
|
— | — | — | — |
5,000,000
SEK
|
38,000,000
SEK
|
— |
43,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
18,000,000
SEK
|
— | — | — | — | — | — | — |
18,000,000
SEK
|
— |
18,000,000
SEK
|
— | — |
43,000,000
SEK
|
— |
43,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
43,000,000
SEK
|
— | — | — | — | — | — | — |