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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Property, plant and equipment |
2,820,000,000
SEK
|
— | — | — | — |
2,147,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Right-of-use assets |
1,633,000,000
SEK
|
— | — | — | — |
1,333,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Goodwill |
2 842,3
SEK
|
— | — | — | — |
1 953,6
SEK
|
— | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill |
18,000,000
SEK
|
— | — | — | — |
5,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Deferred tax assets |
18,000,000
SEK
|
— | — | — | — |
14,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
4,526,000,000
SEK
|
— | — | — | — |
2,716,000,000
SEK
|
— | — | — | — |
4,093,000,000
SEK
|
— | — | — | — |
| Assets |
5 049,5
SEK
|
— | — | — | — |
3 345,5
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital |
25,000,000
SEK
|
— | — | — | — |
23,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity |
2 092,5
SEK
|
5,780,000,000
SEK
|
25,000,000
SEK
|
885,000,000
SEK
|
1 423,5
SEK
|
1 269,6
SEK
|
3,644,000,000
SEK
|
156,000,000
SEK
|
8,873,000,000
SEK
|
23,000,000
SEK
|
1 046,5
SEK
|
2,058,000,000
SEK
|
23,000,000
SEK
|
8,447,000,000
SEK
|
62,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||
| Deferred tax liabilities |
1,226,000,000
SEK
|
— | — | — | — |
745,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities |
5 049,5
SEK
|
— | — | — | — |
3 345,5
SEK
|
— | — | — | — | — | — | — | — | — |