Statement Of Financial Position [Abstract]
| Concept |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
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 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||||||||||
| Property, plant and equipment |
355,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
495,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
1 954
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1 967
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
201,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
174,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
1 088
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
2 112
SEK
|
— | — | — | — | — | — | — | — | — | — |
1 930
SEK
|
| Assets |
27 996
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
25 913
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||||||||||
| Issued capital |
283,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
283,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
6 085
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
5 533
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other equity interest |
4 949
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
4 942
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other reserves |
858,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
234,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent |
12 176
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
10 992
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests |
2,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
12 178
SEK
|
858,000,000
SEK
|
2,000,000
SEK
|
6 085
SEK
|
283,000,000
SEK
|
12 176
SEK
|
4 949
SEK
|
10 992
SEK
|
5 533
SEK
|
283,000,000
SEK
|
1,000,000
SEK
|
10 993
SEK
|
234,000,000
SEK
|
4 942
SEK
|
5 533
SEK
|
234,000,000
SEK
|
4 942
SEK
|
10 993
SEK
|
10 992
SEK
|
1,000,000
SEK
|
283,000,000
SEK
|
282,000,000
SEK
|
10 005
SEK
|
4 864
SEK
|
113,000,000
SEK
|
4 971
SEK
|
10 005
SEK
|
1,000,000
SEK
|
— |
| Liabilities [abstract] | |||||||||||||||||||||||||||||
| Deferred tax liabilities |
397,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
389,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
15 817
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
14 919
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
27 996
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
25 913
SEK
|
— | — | — | — | — | — | — | — | — | — | — |