Statement Of Financial Position [Abstract]
| Concept |
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 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||
| Property, plant and equipment | — | — | — | — |
380,000,000
SEK
|
— |
299,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — |
1 452
SEK
|
— |
1 028
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — |
20,000,000
SEK
|
— |
25,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — |
1 046
SEK
|
— |
1 308
SEK
|
— | — | — | — | — | — |
1 594
SEK
|
— | — | — | — |
| Assets | — | — | — | — |
24 333
SEK
|
— |
22 472
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital | — | — | — | — |
4,000,000
SEK
|
— |
4,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — |
4 685
SEK
|
— |
4 218
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — |
23,000,000
SEK
|
— |
155,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — |
8 229
SEK
|
— |
7 895
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — |
37,000,000
SEK
|
— |
40,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
4,000,000
SEK
|
23,000,000
SEK
|
4 685
SEK
|
3 518
SEK
|
8 267
SEK
|
37,000,000
SEK
|
7 936
SEK
|
40,000,000
SEK
|
4 218
SEK
|
4,000,000
SEK
|
155,000,000
SEK
|
3 518
SEK
|
3 281
SEK
|
6 832
SEK
|
3 518
SEK
|
16,000,000
SEK
|
13,000,000
SEK
|
4,000,000
SEK
|
| Liabilities [abstract] | ||||||||||||||||||
| Deferred tax liabilities | — | — | — | — |
648,000,000
SEK
|
— |
628,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — |
16 066
SEK
|
— |
14 536
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — |
24 333
SEK
|
— |
22 472
SEK
|
— | — | — | — | — | — | — | — | — | — | — |