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] | |||||||||||||||||||||
| Property, plant and equipment | — |
114,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
95,000,000
SEK
|
— | — | — | — | — | — | — |
| Goodwill | — |
428,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
229,000,000
SEK
|
— | — | — | — | — | — | — |
| Intangible assets other than goodwill | — |
35,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
8,000,000
SEK
|
— | — | — | — | — | — | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements | — |
17,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
11,000,000
SEK
|
— | — | — | — | — | — | — |
| Deferred tax assets | — |
54,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
42,000,000
SEK
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — |
8 97
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
860,000,000
SEK
|
— | — | — |
298,000,000
SEK
|
— | — | — |
| Assets | — |
4 101
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
3 170
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — |
4,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
4,000,000
SEK
|
— | — | — | — | — | — | — |
| Retained earnings | — |
555,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
408,000,000
SEK
|
— | — | — | — | — | — | — |
| Share premium | — |
946,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
946,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity attributable to owners of parent | — |
1 747
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
1 590
SEK
|
— | — | — | — | — | — | — |
| Non-controlling interests | — |
4,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
3,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity |
798,000,000
SEK
|
1 751
SEK
|
1 747
SEK
|
946,000,000
SEK
|
4,000,000
SEK
|
1,000,000
SEK
|
4,000,000
SEK
|
6 42
SEK
|
3,000,000
SEK
|
1 590
SEK
|
4,000,000
SEK
|
2,000,000
SEK
|
946,000,000
SEK
|
1 593
SEK
|
56 9
SEK
|
3,000,000
SEK
|
0
SEK
|
572,000,000
SEK
|
83,000,000
SEK
|
483,000,000
SEK
|
3,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||||||||
| Deferred tax liabilities | — |
18,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
4,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities | — |
4 101
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
3 170
SEK
|
— | — | — | — | — | — | — |