Statement Of Financial Position [Abstract]
| Concept |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
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 |
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 financial position [abstract] | ||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||
| Property, plant and equipment | — | — | — |
3,115,000,000
SEK
|
— | — | — | — | — | — |
2,546,000,000
SEK
|
— | — | — | — | — | — | — |
| Deferred tax assets | — | — | — |
21,000,000
SEK
|
— | — | — | — | — | — |
17,000,000
SEK
|
— | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||
| Cash and cash equivalents | — | — | — |
4 735,2
SEK
|
— | — | — | — | — | — |
4 674,7
SEK
|
— |
4 211,7
SEK
|
— | — | — | — | — |
| Assets | — | — | — |
273 222,9
SEK
|
— | — | — | — | — | — |
222 249,7
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital | — | — | — |
13,000,000
SEK
|
— | — | — | — | — | — |
13,000,000
SEK
|
— | — | — | — | — | — | — |
| Retained earnings | — | — | — |
263,000,000
SEK
|
— | — | — | — | — | — |
8,938,000,000
SEK
|
— | — | — | — | — | — | — |
| Other reserves | — | — | — |
1,059,000,000
SEK
|
— | — | — | — | — | — |
1,321,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity |
263,000,000
SEK
|
7 114,0
SEK
|
1,059,000,000
SEK
|
7 935,7
SEK
|
9,000,000,000
SEK
|
13,000,000
SEK
|
1 400,0
SEK
|
13,000,000
SEK
|
7 327,0
SEK
|
8,938,000,000
SEK
|
7 702,4
SEK
|
1,321,000,000
SEK
|
6 050,1
SEK
|
12,000,000
SEK
|
1 976,6
SEK
|
1,612,000,000
SEK
|
1 100,0
SEK
|
7 086,7
SEK
|
| Liabilities [abstract] | ||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||
| Deferred tax liabilities | — | — | — |
402,000,000
SEK
|
— | — | — | — | — | — |
462,000,000
SEK
|
— | — | — | — | — | — | — |
| Liabilities | — | — | — |
265 287,2
SEK
|
— | — | — | — | — | — |
214 547,3
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities | — | — | — |
273 222,9
SEK
|
— | — | — | — | — | — |
222 249,7
SEK
|
— | — | — | — | — | — | — |