Statement Of Comprehensive Income [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 |
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 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||
| Profit (loss) |
-
SEK
|
-
SEK
|
4,000,000
SEK
|
0
SEK
|
4,000,000
SEK
|
4,000,000
SEK
|
-
SEK
|
-
SEK
|
48,000,000
SEK
|
47,000,000
SEK
|
48,000,000
SEK
|
1,000,000
SEK
|
-
SEK
|
-
SEK
|
| Other comprehensive income [abstract] | ||||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] | ||||||||||||||
| Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans |
-
SEK
|
-
SEK
|
21,000,000
SEK
|
-
SEK
|
21,000,000
SEK
|
21,000,000
SEK
|
-
SEK
|
-
SEK
|
138,000,000
SEK
|
138,000,000
SEK
|
138,000,000
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
| Other comprehensive income | — | — |
15,000,000
SEK
|
— | — | — | — | — | — |
165,000,000
SEK
|
— | — | — | — |
| Comprehensive income |
-
SEK
|
-
SEK
|
12,000,000
SEK
|
1,000,000
SEK
|
17,000,000
SEK
|
11,000,000
SEK
|
6,000,000
SEK
|
-
SEK
|
212,000,000
SEK
|
212,000,000
SEK
|
186,000,000
SEK
|
0
SEK
|
26,000,000
SEK
|
-
SEK
|
| Comprehensive income attributable to [abstract] | ||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — |
11,000,000
SEK
|
— | — | — | — | — | — |
212,000,000
SEK
|
— | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — |
1,000,000
SEK
|
— | — | — | — | — | — |
0
SEK
|
— | — | — | — |