Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||
| Equity |
1 873
SEK
|
— | — | — |
1 229
SEK
|
1,000,000
SEK
|
13,000,000
SEK
|
630,000,000
SEK
|
— | — |
789,000,000
SEK
|
620,000,000
SEK
|
1 101
SEK
|
— | — |
309,000,000
SEK
|
1,000,000
SEK
|
— | — | — |
559,000,000
SEK
|
615,000,000
SEK
|
1,000,000
SEK
|
369,000,000
SEK
|
806,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||
| Profit (loss) | — |
0
SEK
|
440,000,000
SEK
|
440,000,000
SEK
|
— | — | — | — |
0
SEK
|
0
SEK
|
— | — | — |
0
SEK
|
0
SEK
|
— | — |
0
SEK
|
339,000,000
SEK
|
339,000,000
SEK
|
— | — | — | — | — |
| Other comprehensive income | — | — |
322,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
60,000,000
SEK
|
— | — | — | — | — | — |
| Comprehensive income | — |
0
SEK
|
762,000,000
SEK
|
440,000,000
SEK
|
— | — | — | — |
322,000,000
SEK
|
0
SEK
|
— | — | — |
60,000,000
SEK
|
-
SEK
|
— | — |
-
SEK
|
399,000,000
SEK
|
339,000,000
SEK
|
— | — | — | — | — |
| Dividends recognised as distributions to owners | — | — | — | — | — | — | — | — | — | — | — | — | — |
0
SEK
|
0
SEK
|
— | — |
0
SEK
|
109,000,000
SEK
|
109,000,000
SEK
|
— | — | — | — | — |