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 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 | — | — |
9,000,000
SEK
|
— | — | — | — | — | — |
6,000,000
SEK
|
— | — |
1 91
SEK
|
— | — | — | — | — | — | — |
| Right-of-use assets | — | — |
4,000,000
SEK
|
— | — | — | — | — | — |
3,000,000
SEK
|
— | — |
28,000,000
SEK
|
— | — | — | — | — | — | — |
| Goodwill | — | — | — | — | — | — | — | — | — | — | — | — |
10 2
SEK
|
— | — | — | — | — | — | — |
| Investments accounted for using equity method | — | — | — | — | — | — | — | — | — | — | — | — |
348,000,000
SEK
|
— | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — | — | — | — | — | — | — |
6,000,000
SEK
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — | — |
326,000,000
SEK
|
— | — | — | — | — | — |
1 167
SEK
|
— | — |
1 255
SEK
|
710,000,000
SEK
|
— | — |
65 8
SEK
|
— | — | — |
| Assets | — | — |
24 004
SEK
|
— | — | — | — | — | — |
17 791
SEK
|
— | — |
17 935
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||
| Issued capital | — | — |
576,000,000
SEK
|
— | — | — | — | — | — |
5 76
SEK
|
— | — |
5 76
SEK
|
— | — | — | — | — | — | — |
| Retained earnings | — | — |
21 708
SEK
|
— | — | — | — | — | — |
15 50 4
SEK
|
— | — |
15 447
SEK
|
— | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — |
23 943
SEK
|
— | — | — | — | — | — |
17 739
SEK
|
— | — |
17 6 82
SEK
|
— | — | — | — | — | — | — |
| Non-controlling interests | — | — |
13,000,000
SEK
|
— | — | — | — | — | — |
7,000,000
SEK
|
— | — |
20,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity |
21 768
SEK
|
1 660
SEK
|
23 956
SEK
|
13,000,000
SEK
|
60,000,000
SEK
|
576,000,000
SEK
|
15 507
SEK
|
20,000,000
SEK
|
576,000,000
SEK
|
17 74 6
SEK
|
1 660
SEK
|
60,000,000
SEK
|
17 70 2
SEK
|
13 573
SEK
|
536,000,000
SEK
|
19,000,000
SEK
|
— |
38,000,000
SEK
|
715,000,000
SEK
|
12 3 41
SEK
|
| Liabilities [abstract] | ||||||||||||||||||||
| Deferred tax liabilities | — | — | — | — | — | — | — | — | — | — | — | — |
1,000,000
SEK
|
— | — | — | — | — | — | — |
| Liabilities | — | — |
47,000,000
SEK
|
— | — | — | — | — | — |
45,000,000
SEK
|
— | — |
232,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities | — | — |
24 004
SEK
|
— | — | — | — | — | — |
17 791
SEK
|
— | — |
17 935
SEK
|
— | — | — | — | — | — | — |