Statement Of Comprehensive Income [Abstract]
| Concept |
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 |
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 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||
| Profit (loss) |
-
SEK
|
-
SEK
|
4 10
SEK
|
413,000,000
SEK
|
4 10
SEK
|
3,000,000
SEK
|
-
SEK
|
2,000,000
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
366,000,000
SEK
|
368,000,000
SEK
|
366,000,000
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
|
0
SEK
|
0
SEK
|
0
SEK
|
0
SEK
|
-
SEK
|
0
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
1,000,000
SEK
|
1,000,000
SEK
|
1,000,000
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 |
-
SEK
|
-
SEK
|
0
SEK
|
0
SEK
|
0
SEK
|
0
SEK
|
-
SEK
|
0
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
0
SEK
|
0
SEK
|
0
SEK
|
| Other comprehensive income |
0
SEK
|
-
SEK
|
197,000,000
SEK
|
198,000,000
SEK
|
0
SEK
|
1,000,000
SEK
|
19 6
SEK
|
0
SEK
|
0
SEK
|
-
SEK
|
70,000,000
SEK
|
69,000,000
SEK
|
69,000,000
SEK
|
2,000,000
SEK
|
| Comprehensive income |
0
SEK
|
-
SEK
|
607,000,000
SEK
|
6 11
SEK
|
4 11
SEK
|
4,000,000
SEK
|
19 6
SEK
|
2,000,000
SEK
|
0
SEK
|
-
SEK
|
70,000,000
SEK
|
434,000,000
SEK
|
437,000,000
SEK
|
364,000,000
SEK
|
| Comprehensive income attributable to [abstract] | ||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — |
607,000,000
SEK
|
— | — | — | — | — | — | — | — |
434,000,000
SEK
|
— |
| Comprehensive income, attributable to non-controlling interests | — | — | — |
4,000,000
SEK
|
— | — | — | — | — | — | — | — |
2,000,000
SEK
|
— |