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] | ||||||||||
| Increase (decrease) through transactions with owners, equity |
-
SEK
|
0
SEK
|
427,000,000
SEK
|
156,000,000
SEK
|
271,000,000
SEK
|
0
SEK
|
11,000,000
SEK
|
8,117,000,000
SEK
|
-
SEK
|
8,106,000,000
SEK
|