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 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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||
| Deferred tax assets | — | — |
481,000,000
SEK
|
— | — | — |
523,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other non-current financial assets | — | — |
30,000,000
SEK
|
— | — | — |
68,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — | — |
48 270
SEK
|
— | — | — |
44 847
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||
| Current tax assets, current | — | — |
291,000,000
SEK
|
— | — | — |
216,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — |
2 235
SEK
|
— | — | — |
1 710
SEK
|
— | — | — | — | — | — |
1 516
SEK
|
— | — | — | — |
| Current assets | — | — |
11 995
SEK
|
— | — | — |
12 526
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Assets | — | — |
60 265
SEK
|
— | — | — |
57 373
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital | — | — |
133,000,000
SEK
|
— | — | — |
133,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — |
39 635
SEK
|
— | — | — |
35 851
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Treasury shares | — | — |
80,000,000
SEK
|
— | — | — |
173,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — |
1 155
SEK
|
— | — | — |
1 375
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — |
40 843
SEK
|
— | — | — |
37 186
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — |
55,000,000
SEK
|
— | — | — |
55,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
133,000,000
SEK
|
39 635
SEK
|
40 898
SEK
|
80,000,000
SEK
|
1 155
SEK
|
55,000,000
SEK
|
37 241
SEK
|
55,000,000
SEK
|
121,000,000
SEK
|
133,000,000
SEK
|
35 799
SEK
|
1 375
SEK
|
164,000,000
SEK
|
31 686
SEK
|
31 227
SEK
|
357,000,000
SEK
|
133,000,000
SEK
|
133,000,000
SEK
|
| Liabilities [abstract] | ||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||
| Other non-current provisions | — | — |
195,000,000
SEK
|
— | — | — |
192,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — |
715,000,000
SEK
|
— | — | — |
652,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other non-current financial liabilities | — | — |
7 646
SEK
|
— | — | — |
7 528
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — | — |
9 930
SEK
|
— | — | — |
9 776
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||
| Current provisions [abstract] | ||||||||||||||||||
| Other current provisions | — | — |
24,000,000
SEK
|
— | — | — |
28,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities, current | — | — |
323,000,000
SEK
|
— | — | — |
311,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — | — |
9 437
SEK
|
— | — | — |
10 356
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Liabilities | — | — |
19 367
SEK
|
— | — | — |
20 132
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — |
60 265
SEK
|
— | — | — |
57 373
SEK
|
— | — | — | — | — | — | — | — | — | — | — |