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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Property, plant and equipment |
309,000,000
SEK
|
— | — | — | — |
225,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Right-of-use assets |
14,000,000
SEK
|
— | — | — | — |
10,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Goodwill |
27,000,000
SEK
|
— | — | — | — |
-
SEK
|
— | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill |
132,000,000
SEK
|
— | — | — | — |
2,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements |
46,000,000
SEK
|
— | — | — | — |
87,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
578,000,000
SEK
|
— | — | — | — |
279,000,000
SEK
|
— | — | — | — | — | — | — |
32,000,000
SEK
|
— |
| Assets |
2 140
SEK
|
— | — | — | — |
1 639
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital |
45,000,000
SEK
|
— | — | — | — |
45,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Retained earnings |
1 248
SEK
|
— | — | — | — |
1 104
SEK
|
— | — | — | — | — | — | — | — | — |
| Other reserves |
6,000,000
SEK
|
— | — | — | — |
3,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent |
1 299
SEK
|
— | — | — | — |
1 152
SEK
|
— | — | — | — | — | — | — | — | — |
| Non-controlling interests |
0
SEK
|
— | — | — | — |
0
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity |
1 299
SEK
|
1 248
SEK
|
6,000,000
SEK
|
0
SEK
|
45,000,000
SEK
|
1 152
SEK
|
45,000,000
SEK
|
1 104
SEK
|
0
SEK
|
3,000,000
SEK
|
1 037
SEK
|
0
SEK
|
8,000,000
SEK
|
1 090
SEK
|
45,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||
| Deferred tax liabilities |
104,000,000
SEK
|
— | — | — | — |
72,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Liabilities |
841,000,000
SEK
|
— | — | — | — |
487,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities |
2 140
SEK
|
— | — | — | — |
1 639
SEK
|
— | — | — | — | — | — | — | — | — |