Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||
| Equity | — |
1 622
SEK
|
1 013
SEK
|
— | — | — |
1,000,000
SEK
|
22,000,000
SEK
|
— |
630,000,000
SEK
|
1 873
SEK
|
— | — | — |
1 229
SEK
|
1,000,000
SEK
|
13,000,000
SEK
|
630,000,000
SEK
|
— | — |
789,000,000
SEK
|
620,000,000
SEK
|
1 101
SEK
|
309,000,000
SEK
|
1,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||
| Profit (loss) |
107,000,000
SEK
|
— | — |
107,000,000
SEK
|
-
SEK
|
-
SEK
|
— | — |
-
SEK
|
— | — |
-
SEK
|
440,000,000
SEK
|
440,000,000
SEK
|
— | — | — | — |
-
SEK
|
-
SEK
|
— | — | — | — | — |
| Other comprehensive income |
35,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
322,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
142,000,000
SEK
|
— | — |
107,000,000
SEK
|
35,000,000
SEK
|
-
SEK
|
— | — |
-
SEK
|
— | — |
-
SEK
|
762,000,000
SEK
|
440,000,000
SEK
|
— | — | — | — |
322,000,000
SEK
|
-
SEK
|
— | — | — | — | — |
| Dividends recognised as distributions to owners |
109,000,000
SEK
|
— | — |
109,000,000
SEK
|
-
SEK
|
-
SEK
|
— | — |
-
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |