Statement Of Changes In Equity [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||
| Statement of changes in equity [line items] | ||||||||
| Increase (decrease) through exercise of options, equity | — |
122,000,000
SEK
|
122,000,000
SEK
|
122,000,000
SEK
|
18,000,000
SEK
|
1 8
SEK
|
— |
18,000,000
SEK
|
| Increase (decrease) through exercise of warrants, equity | — |
22,000,000
SEK
|
22,000,000
SEK
|
— | — | — | — | — |
| Purchase of treasury shares | — |
284,000,000
SEK
|
284,000,000
SEK
|
284,000,000
SEK
|
— | — | — | — |
| Sale or issue of treasury shares |
26,000,000
SEK
|
348,000,000
SEK
|
348,000,000
SEK
|
322,000,000
SEK
|
348,000,000
SEK
|
370,000,000
SEK
|
22,000,000
SEK
|
370,000,000
SEK
|