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 | — | — | — |
9,743,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
7,531,000,000
SEK
|
— | — | — | — | — | — | — |
| Right-of-use assets | — | — | — |
4,567,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
4,608,000,000
SEK
|
— | — | — | — | — | — | — |
| Goodwill | — | — | — |
2,755,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
94,000,000
SEK
|
— | — | — | — | — | — | — |
| Deferred tax assets | — | — | — |
51,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
94,000,000
SEK
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
1 564,9
SEK
|
— | — | — | — | — | — | — | — | — |
1 714,5
SEK
|
— | — | — | — |
3,394,000,000
SEK
|
— | — |
| Assets | — | — | — |
5 057,8
SEK
|
— | — | — | — | — | — | — | — | — |
4 031,8
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — | — |
56,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
53,000,000
SEK
|
— | — | — | — | — | — | — |
| Retained earnings | — | — | — |
346,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
1,082,000,000
SEK
|
— | — | — | — | — | — | — |
| Other reserves | — | — | — |
36,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
6,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — |
2 176,5
SEK
|
— | — | — | — | — | — | — | — | — |
1 908,1
SEK
|
— | — | — | — | — | — | — |
| Non-controlling interests | — | — | — |
1,211,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
-
SEK
|
— | — | — | — | — | — | — |
| Equity |
346,000,000
SEK
|
36,000,000
SEK
|
2 201,9
SEK
|
2 297,7
SEK
|
2 176,5
SEK
|
1,211,000,000
SEK
|
56,000,000
SEK
|
1,081,000,000
SEK
|
-
SEK
|
2 010,3
SEK
|
1 908,1
SEK
|
53,000,000
SEK
|
6,000,000
SEK
|
1 908,1
SEK
|
9,426,000,000
SEK
|
-
SEK
|
2,000,000
SEK
|
1 178,6
SEK
|
9,426,000,000
SEK
|
2,409,000,000
SEK
|
48,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||||||||
| Deferred tax liabilities | — | — | — |
174,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
-
SEK
|
— | — | — | — | — | — | — |
| Liabilities | — | — | — |
2 760,1
SEK
|
— | — | — | — | — | — | — | — | — |
2 123,7
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities | — | — | — |
5 057,8
SEK
|
— | — | — | — | — | — | — | — | — |
4 031,8
SEK
|
— | — | — | — | — | — | — |