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 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 |
172,000,000
SEK
|
— | — | — | — | — |
110,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
972,000,000
SEK
|
— | — | — | — | — |
1 002
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
29,000,000
SEK
|
— | — | — | — | — |
34,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
1 594
SEK
|
— | — | — | — | — |
1 748
SEK
|
— | — | — | — | — | — | — |
972,000,000
SEK
|
— | — | — |
| Assets |
19 516
SEK
|
— | — | — | — | — |
17 053
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital |
4,000,000
SEK
|
— | — | — | — | — |
4,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
3 281
SEK
|
— | — | — | — | — |
2 418
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other reserves |
13,000,000
SEK
|
— | — | — | — | — |
85,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent |
6 816
SEK
|
— | — | — | — | — |
5 855
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests |
16,000,000
SEK
|
— | — | — | — | — |
21,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
6 832
SEK
|
3 280
SEK
|
3 518
SEK
|
17,000,000
SEK
|
13,000,000
SEK
|
4,000,000
SEK
|
5 876
SEK
|
4,000,000
SEK
|
2 418
SEK
|
21,000,000
SEK
|
85,000,000
SEK
|
3 518
SEK
|
2 000
SEK
|
9,000,000
SEK
|
5 596
SEK
|
65,000,000
SEK
|
3 518
SEK
|
4,000,000
SEK
|
| Liabilities [abstract] | ||||||||||||||||||
| Deferred tax liabilities |
386,000,000
SEK
|
— | — | — | — | — |
322,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
12 684
SEK
|
— | — | — | — | — |
11 177
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
19 516
SEK
|
— | — | — | — | — |
17 053
SEK
|
— | — | — | — | — | — | — | — | — | — | — |