Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 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 |
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 |
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 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||
| Equity | — |
1 214,3
SEK
|
— |
2 19, 8
SEK
|
— |
1 3 , 4
SEK
|
— |
-
SEK
|
1 0 0 7, 3
SEK
|
6,000,000
SEK
|
1 214,3
SEK
|
1 243,4
SEK
|
— | — | — | — |
8, 3
SEK
|
26, 8
SEK
|
1 0 0 7, 3
SEK
|
200, 5
SEK
|
6,000,000
SEK
|
1 216,7
SEK
|
— | — |
4 7, 1
SEK
|
8,000,000
SEK
|
9,685,000,000
SEK
|
9 4 7, 3
SEK
|
21 , 2
SEK
|
898, 8
SEK
|
5,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||
| Profit (loss) |
3 8 ,7
SEK
|
— |
40, 4
SEK
|
— |
1 ,7
SEK
|
— |
40, 4
SEK
|
— | — | — | — | — | — |
1 4 9, 1
SEK
|
144 ,4
SEK
|
4 ,7
SEK
|
— | — | — | — | — | — |
1,444,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
2 3 , 3
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
82,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
154,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
1 5 7, 4
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Issue of equity | — | — | — | — | — | — | — | — | — | — | — | — |
0
SEK
|
1,085,000,000
SEK
|
— | — | — | — | — | — | — | — |
1,085,000,000
SEK
|
108 ,5
SEK
|
— | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
5 7, 2
SEK
|
— |
5 7, 2
SEK
|
— | — | — |
5 7, 2
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |
33 , 5
SEK
|
— |
1 0 , 2
SEK
|
— |
2 3 , 4
SEK
|
— |
1 0 , 2
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |