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 |
761,000,000
SEK
|
— | — | — | — |
659,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill |
2,174,000,000
SEK
|
— | — | — | — |
2,489,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Deferred tax assets |
331,000,000
SEK
|
— | — | — | — |
334,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
1,322,000,000
SEK
|
— | — | — | — |
5,041,000,000
SEK
|
— | — | — | — |
5,053,000,000
SEK
|
— | — | — | — |
| Assets |
1 109,0
SEK
|
— | — | — | — |
1 273,7
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital |
142,000,000
SEK
|
— | — | — | — |
142,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Retained earnings |
1 657,9
SEK
|
— | — | — | — |
1 480,2
SEK
|
— | — | — | — | — | — | — | — | — |
| Share premium |
1 815,9
SEK
|
— | — | — | — |
1 816,0
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity |
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
|
5,585,000,000
SEK
|
142,000,000
SEK
|
1 256,7
SEK
|
134,000,000
SEK
|
1 814,4
SEK
|
| Equity and liabilities |
1 109,0
SEK
|
— | — | — | — |
1 273,7
SEK
|
— | — | — | — | — | — | — | — | — |