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 |
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) | — | — |
1 332
SEK
|
1 332
SEK
|
— | — | — |
1 784
SEK
|
1 784
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 | — | — |
9,000,000
SEK
|
— | — | — | — |
243,000,000
SEK
|
— | — |
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract] | ||||||||||
| Income tax relating to remeasurements of defined benefit plans included in other comprehensive income | — | — |
0 ,5
SEK
|
— | — | — | — |
65,000,000
SEK
|
— | — |
| Other comprehensive income | — | — |
1 339
SEK
|
— | — | — | — |
2 966
SEK
|
— | — |
| Comprehensive income |
–
SEK
|
–
SEK
|
7,000,000
SEK
|
1 340
SEK
|
1 348
SEK
|
–
SEK
|
2 788
SEK
|
4 751
SEK
|
1 962
SEK
|
–
SEK
|
| Comprehensive income attributable to [abstract] | ||||||||||
| Comprehensive income, attributable to owners of parent | — | — |
7,000,000
SEK
|
— | — | — | — |
4 751
SEK
|
— | — |