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 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
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 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||
| Equity | — |
3 924,7
SEK
|
— |
3 918,3
SEK
|
— |
11,000,000
SEK
|
53,000,000
SEK
|
3 924,7
SEK
|
3 778,6
SEK
|
3 785,0
SEK
|
53,000,000
SEK
|
11,000,000
SEK
|
3 785,0
SEK
|
— | — |
11,000,000
SEK
|
3 778,6
SEK
|
53,000,000
SEK
|
3 785,0
SEK
|
— |
4 234,5
SEK
|
4 228,1
SEK
|
11,000,000
SEK
|
53,000,000
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||
| Profit (loss) |
2,698,000,000
SEK
|
— |
2,698,000,000
SEK
|
— |
2,698,000,000
SEK
|
— | — | — | — | — | — | — | — |
3,778,000,000
SEK
|
3,778,000,000
SEK
|
— | — | — | — |
3,778,000,000
SEK
|
— | — | — | — |
| Comprehensive income | — | — |
2,698,000,000
SEK
|
— |
2,698,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
3,778,000,000
SEK
|
— | — | — | — |
3,778,000,000
SEK
|
— | — | — | — |
| Dividends recognised as distributions to owners | — | — |
1,301,000,000
SEK
|
— |
1,301,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
717,000,000
SEK
|
— | — | — | — |
717,000,000
SEK
|
— | — | — | — |