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 |
2 321
SEK
|
— | — | — | — | — |
2 067
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
1 064
SEK
|
— | — | — | — | — |
1 039
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
1 460
SEK
|
— | — | — | — | — |
758,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
719,000,000
SEK
|
— |
| Assets |
22 000
SEK
|
— | — | — | — | — |
17 962
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital |
728,000,000
SEK
|
— | — | — | — | — |
727,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
9 239
SEK
|
— | — | — | — | — |
7 776
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other reserves |
325,000,000
SEK
|
— | — | — | — | — |
121,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent |
10 292
SEK
|
— | — | — | — | — |
8 624
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests |
11,000,000
SEK
|
— | — | — | — | — |
10,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
10 303
SEK
|
9 239
SEK
|
325,000,000
SEK
|
10 292
SEK
|
11,000,000
SEK
|
728,000,000
SEK
|
8 634
SEK
|
727,000,000
SEK
|
7 776
SEK
|
10,000,000
SEK
|
121,000,000
SEK
|
8 624
SEK
|
6 518
SEK
|
13,000,000
SEK
|
397,000,000
SEK
|
7 157
SEK
|
7 170
SEK
|
242,000,000
SEK
|
| Liabilities [abstract] | ||||||||||||||||||
| Deferred tax liabilities |
953,000,000
SEK
|
— | — | — | — | — |
749,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
11 697
SEK
|
— | — | — | — | — |
9 328
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
22 000
SEK
|
— | — | — | — | — |
17 962
SEK
|
— | — | — | — | — | — | — | — | — | — | — |