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 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 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 |
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 | — | — | — |
21,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
518,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — |
184,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
712,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Goodwill | — | — | — |
2,230,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
5,567,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — |
140,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
139,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Other non-current financial assets | — | — | — |
506,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
4,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Non-current assets | — | — | — |
3,629,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
8,937,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||||||
| Cash and cash equivalents | — | — | — |
1,791,000,000
SEK
|
— |
1,791,000,000
SEK
|
— | — | — | — | — | — | — |
1,706,000,000
SEK
|
— | — |
1,706,000,000
SEK
|
— | — | — | — | — | — |
1,985,000,000
SEK
|
— |
| Current assets | — | — | — |
6,280,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
6,876,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Assets | — | — | — |
9,909,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
1 581,3
SEK
|
— | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||||||
| Issued capital | — | — | — |
245,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
242,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Retained earnings | — | — | — |
704,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
4,940,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Other reserves | — | — | — |
225,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
14,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Equity |
704,000,000
SEK
|
225,000,000
SEK
|
3,055,000,000
SEK
|
4,229,000,000
SEK
|
6,000,000
SEK
|
— |
231,000,000
SEK
|
245,000,000
SEK
|
60,000,000
SEK
|
4,940,000,000
SEK
|
46,000,000
SEK
|
2,849,000,000
SEK
|
242,000,000
SEK
|
— |
60,000,000
SEK
|
14,000,000
SEK
|
8,045,000,000
SEK
|
383,000,000
SEK
|
20,000,000
SEK
|
403,000,000
SEK
|
2,849,000,000
SEK
|
7,818,000,000
SEK
|
4,344,000,000
SEK
|
— |
242,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||||||||||
| Non-current provisions for employee benefits | — | — | — |
33,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
430,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Other non-current provisions | — | — | — |
488,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
385,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||||||
| Trade and other current payables | — | — | — |
1,258,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
1,989,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Current tax liabilities, current | — | — | — |
245,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
144,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — |
9,909,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
1 581,3
SEK
|
— | — | — | — | — | — | — | — |