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 |
|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||
| Statement of changes in equity [line items] | ||||||
| Dividends recognised as distributions to non-controlling interests | — | — | — | — |
10,000,000
SEK
|
10,000,000
SEK
|
| Increase (decrease) through acquisition of subsidiary, equity | — | — | — | — |
209,000,000
SEK
|
209,000,000
SEK
|
| Reduction of issued capital | — |
4,000,000
SEK
|
4,000,000
SEK
|
4,000,000
SEK
|
— | — |
| Share issue related cost |
368,000,000
SEK
|
— |
368,000,000
SEK
|
368,000,000
SEK
|
— | — |