Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||
| Statement of changes in equity [line items] | ||||||||||
| Increase (decrease) through transactions with owners, equity |
0
SEK
|
5,000,000
SEK
|
839,000,000
SEK
|
844,000,000
SEK
|
-
SEK
|
2,000,000
SEK
|
-
SEK
|
4,780,000,000
SEK
|
583,000,000
SEK
|
5,361,000,000
SEK
|
| Purchase of treasury shares | — |
38,000,000
SEK
|
38,000,000
SEK
|
— | — | — | — | — | — | — |