Statement Of Changes In Equity [Abstract]
| Concept |
As at 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 |
2023-01-01 to 2023-12-31 |
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 2022-12-31 |
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 |
6,596,000,000
SEK
|
2 051,4
SEK
|
— |
11 907,0
SEK
|
14 618,0
SEK
|
— |
16 402,1
SEK
|
13 691,1
SEK
|
6,596,000,000
SEK
|
— | — |
2 051,4
SEK
|
17 457,4
SEK
|
14 186,8
SEK
|
2 592,0
SEK
|
6,786,000,000
SEK
|
| Changes in equity [abstract] | ||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||
| Profit (loss) | — | — |
1 527,9
SEK
|
— | — | — | — | — | — |
845,000,000
SEK
|
— | — | — | — | — | — |
| Other comprehensive income | — | — |
-
SEK
|
— | — | — | — | — | — |
-
SEK
|
— | — | — | — | — | — |
| Comprehensive income | — | — |
1 527,9
SEK
|
— | — |
1 527,9
SEK
|
— | — | — |
845,000,000
SEK
|
845,000,000
SEK
|
— | — | — | — | — |
| Dividends recognised as distributions to owners | — | — |
2,562,000,000
SEK
|
— | — |
2,562,000,000
SEK
|
— | — | — |
4,757,000,000
SEK
|
4,757,000,000
SEK
|
— | — | — | — | — |