Statement Of Financial Position [Abstract]
| Concept |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
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 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment |
28 304
SEK
|
— | — | — | — |
27 043
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
30,000,000
SEK
|
— | — | — | — |
30,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Investment property |
28 250
SEK
|
— | — | — | — |
26 994
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method |
673,000,000
SEK
|
— | — | — | — |
871,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other non-current financial assets |
11,000,000
SEK
|
— | — | — | — |
10,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets |
29 231
SEK
|
— | — | — | — |
28 532
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||
| Trade and other current receivables |
13,000,000
SEK
|
— | — | — | — |
11,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax assets, current |
—
SEK
|
— | — | — | — |
5,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other current financial assets |
217,000,000
SEK
|
— | — | — | — |
281,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
167,000,000
SEK
|
— | — | — | — |
217,000,000
SEK
|
— | — | — | — | — | — |
171,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Current assets |
542,000,000
SEK
|
— | — | — | — |
632,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets |
29 773
SEK
|
— | — | — | — |
29 164
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 |
12 480
SEK
|
10 068
SEK
|
2 400
SEK
|
12,000,000
SEK
|
12 480
SEK
|
13 698
SEK
|
2 400
SEK
|
11 286
SEK
|
12,000,000
SEK
|
13 698
SEK
|
8 524
SEK
|
11 068
SEK
|
10 936
SEK
|
132,000,000
SEK
|
2 400
SEK
|
8 656
SEK
|
11 068
SEK
|
12,000,000
SEK
|
10 936
SEK
|
2 400
SEK
|
12,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||||||
| Other non-current provisions |
128,000,000
SEK
|
— | — | — | — |
195,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities |
2 270
SEK
|
— | — | — | — |
2 503
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other non-current financial liabilities |
9 988
SEK
|
— | — | — | — |
7 466
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities |
12 438
SEK
|
— | — | — | — |
10 239
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||
| Trade and other current payables |
75,000,000
SEK
|
— | — | — | — |
55,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities, current |
44,000,000
SEK
|
— | — | — | — |
—
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities other than liabilities included in disposal groups classified as held for sale |
4 855
SEK
|
— | — | — | — |
5 227
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
29 773
SEK
|
— | — | — | — |
29 164
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |