Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
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 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 |
5,911,000,000
SEK
|
— |
370,000,000
SEK
|
167,000,000
SEK
|
1,000,000
SEK
|
— | — | — | — |
1,000,000
SEK
|
295,000,000
SEK
|
6 74 , 3
SEK
|
— |
615, 5
SEK
|
5,340,000,000
SEK
|
— | — |
172,000,000
SEK
|
— |
5,000,000
SEK
|
370,000,000
SEK
|
27,000,000
SEK
|
295,000,000
SEK
|
— |
5,493,000,000
SEK
|
140,000,000
SEK
|
4,742,000,000
SEK
|
370,000,000
SEK
|
5,000,000
SEK
|
295,000,000
SEK
|
59,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — |
937,000,000
SEK
|
64,000,000
SEK
|
1,001,000,000
SEK
|
— | — | — | — |
985,000,000
SEK
|
— | — |
77,000,000
SEK
|
908,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — |
4,000,000
SEK
|
— | — | — |
4,000,000
SEK
|
0
SEK
|
26,000,000
SEK
|
26,000,000
SEK
|
— | — | — |
18,000,000
SEK
|
— | — |
0
SEK
|
14,000,000
SEK
|
— |
0
SEK
|
— | — | — | — |
32,000,000
SEK
|
— | — | — | — | — | — | — |
| Comprehensive income | — | — | — | — | — | — | — |
1,027,000,000
SEK
|
— | — | — | — |
1,003,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — | — | — | — | — |
3 7, 0
SEK
|
69,000,000
SEK
|
43, 9
SEK
|
— | — | — | — |
341,000,000
SEK
|
— | — |
4, 5
SEK
|
2 9 , 6
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |