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 |
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 |
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 owners of parent | — | — | — |
680,000,000
SEK
|
680,000,000
SEK
|
–
SEK
|
— |
–
SEK
|
— | — |
| Increase (decrease) through transactions with owners, equity |
–
SEK
|
–
SEK
|
3 331
SEK
|
2 651
SEK
|
680,000,000
SEK
|
–
SEK
|
–
SEK
|
–
SEK
|
–
SEK
|
–
SEK
|