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 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 2020-12-31 |
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 |
26,000,000
SEK
|
— | — | — | — |
41,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Other non-current financial assets |
8,000,000
SEK
|
— | — | — | — |
8,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Non-current assets |
4,137,000,000
SEK
|
— | — | — | — |
4,164,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||
| Current inventories |
6,000,000
SEK
|
— | — | — | — |
7,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
1,277,000,000
SEK
|
— | — | — | — |
1,440,000,000
SEK
|
— | — | — | — |
2,879,000,000
SEK
|
— | — | — | — |
| Current assets |
1,474,000,000
SEK
|
— | — | — | — |
1,529,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Assets |
5,611,000,000
SEK
|
— | — | — | — |
5,693,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital |
113,000,000
SEK
|
— | — | — | — |
87,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Retained earnings |
9,396,000,000
SEK
|
— | — | — | — |
7,458,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Other reserves |
61,000,000
SEK
|
— | — | — | — |
13,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity |
5,062,000,000
SEK
|
9,396,000,000
SEK
|
113,000,000
SEK
|
61,000,000
SEK
|
1 428,4
SEK
|
5,270,000,000
SEK
|
7,458,000,000
SEK
|
13,000,000
SEK
|
12,628,000,000
SEK
|
87,000,000
SEK
|
6,307,000,000
SEK
|
87,000,000
SEK
|
6,412,000,000
SEK
|
4,000,000
SEK
|
1 262,8
SEK
|
| Liabilities [abstract] | |||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||
| Non-current liabilities |
55,000,000
SEK
|
— | — | — | — |
31,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||
| Current liabilities |
494,000,000
SEK
|
— | — | — | — |
392,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities |
5,611,000,000
SEK
|
— | — | — | — |
5,693,000,000
SEK
|
— | — | — | — | — | — | — | — | — |