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] | ||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||
| Trade and other non-current receivables | — |
454,000,000
SEK
|
— | — | — | — |
372,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — |
38 338
SEK
|
— | — | — | — |
32 816
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||
| Current tax assets, current | — |
141,000,000
SEK
|
— | — | — | — |
10 3
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — |
1 516
SEK
|
— | — | — | — |
4 033
SEK
|
— | — | — | — | — | — | — | — |
1 029
SEK
|
— | — |
| Current assets | — |
9 599
SEK
|
— | — | — | — |
9 271
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Assets | — |
47 937
SEK
|
— | — | — | — |
42 087
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital | — |
133,000,000
SEK
|
— | — | — | — |
13 3
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — |
31 227
SEK
|
— | — | — | — |
29 018
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Treasury shares | — |
16 4
SEK
|
— | — | — | — |
8 3
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — |
357,000,000
SEK
|
— | — | — | — |
1,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — |
31 553
SEK
|
— | — | — | — |
29 067
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — |
133,000,000
SEK
|
— | — | — | — |
81,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
16 4
SEK
|
31 686
SEK
|
31 227
SEK
|
357,000,000
SEK
|
133,000,000
SEK
|
13 3
SEK
|
29 148
SEK
|
133,000,000
SEK
|
29 018
SEK
|
81,000,000
SEK
|
83,000,000
SEK
|
1,000,000
SEK
|
80,000,000
SEK
|
442,000,000
SEK
|
25 502
SEK
|
26 090
SEK
|
67,000,000
SEK
|
133,000,000
SEK
|
| Liabilities [abstract] | ||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||
| Other non-current financial liabilities | — |
9 429
SEK
|
— | — | — | — |
6 903
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — |
11 227
SEK
|
— | — | — | — |
8 097
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||
| Trade and other current payables | — |
1 568
SEK
|
— | — | — | — |
977,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities, current | — |
222,000,000
SEK
|
— | — | — | — |
125,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other current financial liabilities | — |
24 0
SEK
|
— | — | — | — |
1 781
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — |
5 024
SEK
|
— | — | — | — |
4 842
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Liabilities | — |
16 251
SEK
|
— | — | — | — |
12 939
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — |
47 937
SEK
|
— | — | — | — |
42 087
SEK
|
— | — | — | — | — | — | — | — | — | — | — |