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 |
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 |
As at 2023-12-31 |
2023-01-01 to 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||
| Equity | — |
1 471,6
SEK
|
— |
35,000,000
SEK
|
8,339,000,000
SEK
|
— |
3 974,9
SEK
|
— |
4 609,0
SEK
|
3 974,9
SEK
|
— |
3 900,5
SEK
|
— |
1 235,2
SEK
|
— | — |
35,000,000
SEK
|
5,233,000,000
SEK
|
3 900,5
SEK
|
4 609,0
SEK
|
3 902,2
SEK
|
1 351,4
SEK
|
35,000,000
SEK
|
6,412,000,000
SEK
|
3 902,2
SEK
|
4 609,0
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||
| Profit (loss) |
2,364,000,000
SEK
|
— | — | — | — |
2,364,000,000
SEK
|
— |
2,364,000,000
SEK
|
— | — |
1,561,000,000
SEK
|
— |
1,561,000,000
SEK
|
— |
1,561,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
3,106,000,000
SEK
|
— |
3,106,000,000
SEK
|
— | — | — | — |
3,106,000,000
SEK
|
— | — |
1,180,000,000
SEK
|
— |
1,180,000,000
SEK
|
— | — |
1,180,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
742,000,000
SEK
|
— |
3,106,000,000
SEK
|
— | — |
2,364,000,000
SEK
|
— |
742,000,000
SEK
|
— | — |
381,000,000
SEK
|
— |
381,000,000
SEK
|
— |
1,561,000,000
SEK
|
1,180,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |