Statement Of Financial Position [Abstract]
| Concept |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
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 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 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — |
9 367
SEK
|
8 443
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — | — | — |
4 845
SEK
|
3 960
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Goodwill | — | — | — | — | — | — |
1 659
SEK
|
1 496
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — | — | — | — |
920,000,000
SEK
|
972,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method | — | — | — | — | — | — |
756,000,000
SEK
|
665,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — |
44,000,000
SEK
|
150,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other non-current financial assets | — | — | — | — | — | — |
12,000,000
SEK
|
12,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — | — | — | — | — | — |
12 809
SEK
|
11 788
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||
| Current tax assets, current | — | — | — | — | — | — |
136,000,000
SEK
|
52,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other current financial assets | — | — | — | — | — | — |
102,000,000
SEK
|
26,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — |
331,000,000
SEK
|
264,000,000
SEK
|
— | — | — | — | — | — |
456,000,000
SEK
|
— | — | — | — | — | — |
| Current assets | — | — | — | — | — | — |
7 851
SEK
|
7 607
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets | — | — | — | — | — | — |
20 660
SEK
|
19 395
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — | — | — | — | — |
257,000,000
SEK
|
257,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — | — | — |
4 514
SEK
|
4 408
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — | — | — |
1,000,000
SEK
|
9,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — | — | — |
4 937
SEK
|
4 841
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — | — |
0
SEK
|
0
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
4 514
SEK
|
257,000,000
SEK
|
0
SEK
|
4 937
SEK
|
1,000,000
SEK
|
167,000,000
SEK
|
4 937
SEK
|
4 841
SEK
|
4 408
SEK
|
9,000,000
SEK
|
0
SEK
|
257,000,000
SEK
|
4 841
SEK
|
167,000,000
SEK
|
4 887
SEK
|
147,000,000
SEK
|
0
SEK
|
4 316
SEK
|
257,000,000
SEK
|
4 887
SEK
|
167,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||||||
| Non-current provisions | — | — | — | — | — | — |
135,000,000
SEK
|
147,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — | — | — | — |
542,000,000
SEK
|
670,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — | — | — | — | — | — |
8 485
SEK
|
7 139
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||
| Current provisions [abstract] | |||||||||||||||||||||
| Current provisions | — | — | — | — | — | — |
23,000,000
SEK
|
126,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities, current | — | — | — | — | — | — |
93,000,000
SEK
|
63,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other current financial liabilities | — | — | — | — | — | — |
1 910
SEK
|
2 580
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — | — | — | — | — | — |
7 238
SEK
|
7 415
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — | — | — |
15 723
SEK
|
14 554
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — | — | — |
20 660
SEK
|
19 395
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — |