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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — |
3,617,000,000
SEK
|
3,111,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — | — | — |
1,991,000,000
SEK
|
1,693,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Goodwill | — | — | — | — | — | — |
4 341,6
SEK
|
2 917,3
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — |
304,000,000
SEK
|
50,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — |
4,823,000,000
SEK
|
4,676,000,000
SEK
|
— | — | — | — | — | — |
4,526,000,000
SEK
|
— | — | — | — | — |
| Assets | — | — | — | — | — | — |
7 063,0
SEK
|
5 212,0
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||
| Issued capital | — | — | — | — | — | — |
27,000,000
SEK
|
25,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — | — | — |
573,000,000
SEK
|
7,129,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — | — | — |
658,000,000
SEK
|
430,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — | — | — |
2 332,4
SEK
|
2 182,3
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — | — |
20,000,000
SEK
|
-
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| 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
|
| Liabilities [abstract] | ||||||||||||||||||||
| Deferred tax liabilities | — | — | — | — | — | — |
2,396,000,000
SEK
|
1,463,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — | — | — |
7 063,0
SEK
|
5 212,0
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |