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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Property, plant and equipment | — | — | — |
810,000,000
SEK
|
— |
761,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — |
1,733,000,000
SEK
|
— |
2,174,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — |
481,000,000
SEK
|
— |
331,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
1,710,000,000
SEK
|
— |
1,322,000,000
SEK
|
— | — | — | — |
5,041,000,000
SEK
|
— | — | — | — |
| Assets | — | — | — |
7,866,000,000
SEK
|
— |
1 109,0
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital | — | — | — |
142,000,000
SEK
|
— |
142,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — |
1 786,1
SEK
|
— |
1 657,9
SEK
|
— | — | — | — | — | — | — | — | — |
| Share premium | — | — | — |
1 815,9
SEK
|
— |
1 815,9
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity |
1 815,9
SEK
|
142,000,000
SEK
|
1 786,1
SEK
|
589,000,000
SEK
|
149,000,000
SEK
|
1,939,000,000
SEK
|
1 815,9
SEK
|
1 657,9
SEK
|
142,000,000
SEK
|
217,000,000
SEK
|
3,496,000,000
SEK
|
1 480,2
SEK
|
4,000,000
SEK
|
1 816,0
SEK
|
142,000,000
SEK
|
| Equity and liabilities | — | — | — |
7,866,000,000
SEK
|
— |
1 109,0
SEK
|
— | — | — | — | — | — | — | — | — |