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 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
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 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 |
13 767
SEK
|
— | — | — |
3 248
SEK
|
619,000,000
SEK
|
9 831
SEK
|
69,000,000
SEK
|
9 415
SEK
|
1 547
SEK
|
— |
11 650
SEK
|
619,000,000
SEK
|
69,000,000
SEK
|
— | — |
7 849
SEK
|
69,000,000
SEK
|
596,000,000
SEK
|
619,000,000
SEK
|
9 133
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||
| Profit (loss) | — | — |
2 483
SEK
|
2 483
SEK
|
— | — | — | — | — | — | — | — | — | — |
2 358
SEK
|
2 358
SEK
|
— | — | — | — | — |
| Other comprehensive income | — |
1 701
SEK
|
1 701
SEK
|
— | — | — | — | — | — | — |
951,000,000
SEK
|
— | — | — |
951,000,000
SEK
|
— | — | — | — | — | — |
| Comprehensive income | — |
1 701
SEK
|
4 184
SEK
|
2 483
SEK
|
— | — | — | — | — | — |
951,000,000
SEK
|
— | — | — |
3 309
SEK
|
2 358
SEK
|
— | — | — | — | — |
| Dividends recognised as distributions to owners | — | — |
2 067
SEK
|
2 067
SEK
|
— | — | — | — | — | — | — | — | — | — |
792,000,000
SEK
|
792,000,000
SEK
|
— | — | — | — | — |