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 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 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 financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — |
950,000,000
SEK
|
893,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — | — | — |
4,847,000,000
SEK
|
4,385,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — |
490,000,000
SEK
|
391,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — |
1,138,000,000
SEK
|
1,107,000,000
SEK
|
— | — | — | — | — | — |
904,000,000
SEK
|
— | — | — | — | — | — |
| Assets | — | — | — | — | — | — |
17,067,000,000
SEK
|
15,630,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — | — | — | — | — |
354,000,000
SEK
|
354,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — | — | — |
1,792,000,000
SEK
|
1,741,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — | — | — |
657,000,000
SEK
|
466,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — | — | — |
4,078,000,000
SEK
|
3,836,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — | — |
25,000,000
SEK
|
28,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
1,792,000,000
SEK
|
354,000,000
SEK
|
25,000,000
SEK
|
4,078,000,000
SEK
|
657,000,000
SEK
|
1,276,000,000
SEK
|
4,102,000,000
SEK
|
3,864,000,000
SEK
|
1,741,000,000
SEK
|
466,000,000
SEK
|
28,000,000
SEK
|
354,000,000
SEK
|
3,836,000,000
SEK
|
1,276,000,000
SEK
|
3,870,000,000
SEK
|
532,000,000
SEK
|
36,000,000
SEK
|
1,673,000,000
SEK
|
354,000,000
SEK
|
3,835,000,000
SEK
|
1,276,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||||||||
| Deferred tax liabilities | — | — | — | — | — | — |
284,000,000
SEK
|
297,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — | — | — |
17,067,000,000
SEK
|
15,630,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |