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] | ||||||||
| Dividends recognised as distributions to non-controlling interests |
20,000,000
SEK
|
3, 0
SEK
|
51,000,000
SEK
|
30,000,000
SEK
|
40,000,000
SEK
|
5 ,5
SEK
|
16,000,000
SEK
|
4, 0
SEK
|
| Increase (decrease) through transactions with owners, equity | — |
175,000,000
SEK
|
175,000,000
SEK
|
175,000,000
SEK
|
75,000,000
SEK
|
75,000,000
SEK
|
— |
75,000,000
SEK
|
| Share issue related cost | — | — |
214,000,000
SEK
|
— | — | — | — | — |