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 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] | |||||||||||||||||
| Property, plant and equipment |
25 289
SEK
|
— | — | — | — |
21 928
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
30,000,000
SEK
|
— | — | — | — |
30,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Investment property |
25 239
SEK
|
— | — | — | — |
21 887
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method |
496,000,000
SEK
|
— | — | — | — |
289,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current assets |
25 795
SEK
|
— | — | — | — |
22 275
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||
| Current tax assets, current |
25,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
171,000,000
SEK
|
— | — | — | — |
148,000,000
SEK
|
— | — | — | — | — | — | — | — |
268,000,000
SEK
|
— | — |
| Current assets other than non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
370,000,000
SEK
|
— | — | — | — |
323,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
792,000,000
SEK
|
— | — | — | — |
688,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets |
1 162
SEK
|
— | — | — | — |
1 011
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Assets |
26 957
SEK
|
— | — | — | — |
23 286
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||
| Equity [abstract] | |||||||||||||||||
| Issued capital |
12,000,000
SEK
|
— | — | — | — |
12,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Share premium |
2 400
SEK
|
— | — | — | — |
2 400
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent |
11 068
SEK
|
— | — | — | — |
9 613
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — |
74,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
11 068
SEK
|
8 656
SEK
|
11 068
SEK
|
2 400
SEK
|
12,000,000
SEK
|
9 687
SEK
|
12,000,000
SEK
|
7 201
SEK
|
74,000,000
SEK
|
2 400
SEK
|
9 613
SEK
|
6 075
SEK
|
69,000,000
SEK
|
8 487
SEK
|
8 556
SEK
|
2 400
SEK
|
12,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||
| Non-current provisions for employee benefits |
10,000,000
SEK
|
— | — | — | — |
8,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities |
2 020
SEK
|
— | — | — | — |
1 707
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities |
12 822
SEK
|
— | — | — | — |
9 349
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||
| Trade and other current payables |
45,000,000
SEK
|
— | — | — | — |
28,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities, current | — | — | — | — | — |
42,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities other than liabilities included in disposal groups classified as held for sale |
2 754
SEK
|
— | — | — | — |
4 062
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Liabilities included in disposal groups classified as held for sale |
313,000,000
SEK
|
— | — | — | — |
188,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities |
3 067
SEK
|
— | — | — | — |
4 250
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
26 957
SEK
|
— | — | — | — |
23 286
SEK
|
— | — | — | — | — | — | — | — | — | — | — |