Statement Of Changes In Equity [Abstract]
| Concept |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
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 |
2021-01-01 to 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||
| Statement of changes in equity [line items] | ||||||||||
| Increase (decrease) through exercise of options, equity |
29,000,000
SEK
|
0
SEK
|
29,000,000
SEK
|
— |
29,000,000
SEK
|
— |
44,000,000
SEK
|
44,000,000
SEK
|
44,000,000
SEK
|
— |
| Increase (decrease) through conversion of convertible instruments, equity |
138,000,000
SEK
|
0
SEK
|
138,000,000
SEK
|
— |
138,000,000
SEK
|
0
SEK
|
92,000,000
SEK
|
92,000,000
SEK
|
92,000,000
SEK
|
— |
| Purchase of treasury shares |
48,000,000
SEK
|
— |
48,000,000
SEK
|
48,000,000
SEK
|
— | — |
30,000,000
SEK
|
— |
30,000,000
SEK
|
30,000,000
SEK
|
| Sale or issue of treasury shares |
48,000,000
SEK
|
— |
48,000,000
SEK
|
48,000,000
SEK
|
— | — | — | — | — | — |