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 |
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 |
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 |
-
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
1 741
SEK
|
1 741
SEK
|
567,000,000
SEK
|
-
SEK
|
567,000,000
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
| Increase (decrease) through appropriation of retained earnings, equity | — | — | — | — | — | — | — |
175,000,000
SEK
|
175,000,000
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
| Cancellation of treasury shares | — | — | — | — | — | — | — |
175,000,000
SEK
|
175,000,000
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|