Statement Of Financial Position [Abstract]
| Concept |
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 |
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 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment |
817,500,000
SEK
|
— | — | — | — | — | — | — | — | — |
698,200,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
4,152,100,000
SEK
|
— | — | — | — | — | — | — | — | — |
2,673,600,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
386,600,000
SEK
|
— | — | — | — | — | — | — | — | — |
341,100,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
904,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
898,100,000
SEK
|
— | — | — | — | — | — | — | — | — |
1,101,400,000
SEK
|
| Assets |
14,574,100,000
SEK
|
— | — | — | — | — | — | — | — | — |
11,799,600,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital |
353,600,000
SEK
|
— | — | — | — | — | — | — | — | — |
353,600,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Retained earnings |
1,673,400,000
SEK
|
— | — | — | — | — | — | — | — | — |
1,420,200,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Other reserves |
532,200,000
SEK
|
— | — | — | — | — | — | — | — | — |
227,100,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent |
3,834,800,000
SEK
|
— | — | — | — | — | — | — | — | — |
3,276,500,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Non-controlling interests |
35,500,000
SEK
|
— | — | — | — | — | — | — | — | — |
27,400,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Equity |
3,870,300,000
SEK
|
532,200,000
SEK
|
35,500,000
SEK
|
1,673,400,000
SEK
|
353,600,000
SEK
|
3,834,800,000
SEK
|
1,275,600,000
SEK
|
1,420,200,000
SEK
|
227,100,000
SEK
|
1,275,600,000
SEK
|
3,303,900,000
SEK
|
3,276,500,000
SEK
|
27,400,000
SEK
|
353,600,000
SEK
|
1,201,200,000
SEK
|
20,900,000
SEK
|
1,275,600,000
SEK
|
2,887,000,000
SEK
|
353,600,000
SEK
|
56,600,000
SEK
|
2,907,800,000
SEK
|
| Liabilities [abstract] | |||||||||||||||||||||
| Deferred tax liabilities |
236,600,000
SEK
|
— | — | — | — | — | — | — | — | — |
233,600,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
14,574,100,000
SEK
|
— | — | — | — | — | — | — | — | — |
11,799,600,000
SEK
|
— | — | — | — | — | — | — | — | — | — |