Statement Of Financial Position [Abstract]
| Concept |
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 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||
| Assets [abstract] | ||||||||||||
| Non-current assets [abstract] | ||||||||||||
| Right-of-use assets |
1,557,000,000
SEK
|
— | — | — |
1,691,000,000
SEK
|
— | — | — | — | — | — | — |
| Goodwill |
6,096,000,000
SEK
|
— | — | — |
6,056,000,000
SEK
|
— | — | — | — | — | — | — |
| Trade and other non-current receivables |
3,000,000
SEK
|
— | — | — |
3,000,000
SEK
|
— | — | — | — | — | — | — |
| Deferred tax assets |
12,000,000
SEK
|
— | — | — |
14,000,000
SEK
|
— | — | — | — | — | — | — |
| Non-current assets |
1 325,8
SEK
|
— | — | — |
1 209,4
SEK
|
— | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||
| Cash and cash equivalents |
4,347,000,000
SEK
|
— | — | — |
3,733,000,000
SEK
|
— | — | — |
4,126,000,000
SEK
|
— | — | — |
| Current assets |
9,763,000,000
SEK
|
— | — | — |
7,618,000,000
SEK
|
— | — | — | — | — | — | — |
| Assets |
2 302,1
SEK
|
— | — | — |
1 971,2
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||
| Equity [abstract] | ||||||||||||
| Issued capital |
12,000,000
SEK
|
— | — | — |
12,000,000
SEK
|
— | — | — | — | — | — | — |
| Retained earnings |
8,589,000,000
SEK
|
— | — | — |
5,609,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity attributable to owners of parent |
1 280,8
SEK
|
— | — | — |
9,817,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity |
1 280,8
SEK
|
8,589,000,000
SEK
|
12,000,000
SEK
|
4,207,000,000
SEK
|
9,817,000,000
SEK
|
5,609,000,000
SEK
|
4,196,000,000
SEK
|
12,000,000
SEK
|
4,693,000,000
SEK
|
12,000,000
SEK
|
3,654,000,000
SEK
|
1,026,000,000
SEK
|
| Liabilities [abstract] | ||||||||||||
| Non-current liabilities [abstract] | ||||||||||||
| Deferred tax liabilities |
372,000,000
SEK
|
— | — | — |
364,000,000
SEK
|
— | — | — | — | — | — | — |
| Non-current liabilities |
4,639,000,000
SEK
|
— | — | — |
4,742,000,000
SEK
|
— | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||
| Current tax liabilities, current |
870,000,000
SEK
|
— | — | — |
698,000,000
SEK
|
— | — | — | — | — | — | — |
| Current liabilities |
5,574,000,000
SEK
|
— | — | — |
5,153,000,000
SEK
|
— | — | — | — | — | — | — |
| Liabilities |
1 021,3
SEK
|
— | — | — |
9,894,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities |
2 302,1
SEK
|
— | — | — |
1 971,2
SEK
|
— | — | — | — | — | — | — |