Statement Of Financial Position [Abstract]
| Concept |
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 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||
| Investments accounted for using equity method | — | — |
16 0
SEK
|
— | — | — | — | — | — | — | — | — | — |
14 8
SEK
|
— | — | — | — | — | — | — |
| Deferred tax assets | — | — |
10 8
SEK
|
— | — | — | — | — | — | — | — | — | — |
15,000,000
SEK
|
— | — | — | — | — | — | — |
| Non-current assets | — | — |
2 725
SEK
|
— | — | — | — | — | — | — | — | — | — |
2 156
SEK
|
— | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||
| Current inventories | — | — |
1,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
1,000,000
SEK
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — | — |
575,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
234,000,000
SEK
|
— | — | — | — |
162,000,000
SEK
|
— | — |
| Current assets | — | — |
4 189
SEK
|
— | — | — | — | — | — | — | — | — | — |
3 836
SEK
|
— | — | — | — | — | — | — |
| Assets | — | — |
6 914
SEK
|
— | — | — | — | — | — | — | — | — | — |
5 992
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — |
3,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
2,000,000
SEK
|
— | — | — | — | — | — | — |
| Retained earnings | — | — |
1 347
SEK
|
— | — | — | — | — | — | — | — | — | — |
998,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — |
2 467
SEK
|
— | — | — | — | — | — | — | — | — | — |
1 946
SEK
|
— | — | — | — | — | — | — |
| Non-controlling interests | — | — |
0
SEK
|
— | — | — | — | — | — | — | — | — | — |
0
SEK
|
— | — | — | — | — | — | — |
| Equity |
1 347
SEK
|
1 118
SEK
|
2 467
SEK
|
2 467
SEK
|
0
SEK
|
1,000,000
SEK
|
3,000,000
SEK
|
998,000,000
SEK
|
0
SEK
|
9 47
SEK
|
1 946
SEK
|
2,000,000
SEK
|
1,000,000
SEK
|
1 946
SEK
|
2 179
SEK
|
0
SEK
|
1,000,000
SEK
|
8 21
SEK
|
2 179
SEK
|
1 357
SEK
|
2,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||||||
| Non-current provisions | — | — |
202,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
187,000,000
SEK
|
— | — | — | — | — | — | — |
| Non-current liabilities | — | — |
74 0
SEK
|
— | — | — | — | — | — | — | — | — | — |
1 058
SEK
|
— | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||
| Current tax liabilities, current | — | — |
0
SEK
|
— | — | — | — | — | — | — | — | — | — |
2,000,000
SEK
|
— | — | — | — | — | — | — |
| Current liabilities | — | — |
3 707
SEK
|
— | — | — | — | — | — | — | — | — | — |
2 988
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities | — | — |
6 914
SEK
|
— | — | — | — | — | — | — | — | — | — |
5 992
SEK
|
— | — | — | — | — | — | — |