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 | — | — |
1 051,4
SEK
|
— | — | — | — | — | — | — | — | — | — |
6,759,000,000
SEK
|
— | — | — | — | — | — | — |
| Right-of-use assets | — | — |
8,933,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
6,019,000,000
SEK
|
— | — | — | — | — | — | — |
| Goodwill | — | — |
6 318,7
SEK
|
— | — | — | — | — | — | — | — | — | — |
4 395,1
SEK
|
— | — | — | — | — | — | — |
| Deferred tax assets | — | — |
264,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
19, 1
SEK
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — | — |
2,735,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
2,990,000,000
SEK
|
— | — | — | — |
2,703,000,000
SEK
|
— | — |
| Assets | — | — |
13 612,3
SEK
|
— | — | — | — | — | — | — | — | — | — |
8 629,7
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — |
37,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
32,000,000
SEK
|
— | — | — | — | — | — | — |
| Retained earnings | — | — |
3,947,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
1,113,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — |
5 211,9
SEK
|
— | — | — | — | — | — | — | — | — | — |
2 787,2
SEK
|
— | — | — | — | — | — | — |
| Non-controlling interests | — | — |
444,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
358,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity |
3,947,000,000
SEK
|
4 790,6
SEK
|
5 256,3
SEK
|
5 211,9
SEK
|
444,000,000
SEK
|
229,000,000
SEK
|
37,000,000
SEK
|
1,113,000,000
SEK
|
358,000,000
SEK
|
2 667,4
SEK
|
2 787,2
SEK
|
32,000,000
SEK
|
53,000,000
SEK
|
2 823,0
SEK
|
2 889,7
SEK
|
354,000,000
SEK
|
147,000,000
SEK
|
2 667,4
SEK
|
2 925,1
SEK
|
2,043,000,000
SEK
|
32,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||||||||
| Deferred tax liabilities | — | — |
6,367,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
3,750,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities | — | — |
13 612,3
SEK
|
— | — | — | — | — | — | — | — | — | — |
8 629,7
SEK
|
— | — | — | — | — | — | — |