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 |
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 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
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 |
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 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 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||
| Equity |
4,105,000,000
SEK
|
— | — | — |
394,000,000
USD
|
0
SEK
|
— | — |
2,920,000,000
SEK
|
1,875,000,000
SEK
|
4,531,000,000
SEK
|
619,000,000
SEK
|
0
SEK
|
— | — |
6,096,000,000
SEK
|
— |
619,000,000
SEK
|
2,963,000,000
SEK
|
21,000,000
SEK
|
0
SEK
|
— | — | — |
4,602,000,000
SEK
|
3,818,000,000
SEK
|
— | — | — |
507,000,000
SEK
|
1,109,000,000
SEK
|
619,000,000
SEK
|
3,818,000,000
SEK
|
4,115,000,000
SEK
|
0
SEK
|
7,951,000,000
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||
| Other comprehensive income | — | — |
91,000,000
SEK
|
0
SEK
|
— | — |
21,000,000
SEK
|
0
SEK
|
— | — | — | — | — |
70,000,000
SEK
|
— | — |
1,130,000,000
SEK
|
— | — | — | — |
486,000,000
SEK
|
0
SEK
|
— | — | — | — |
1,616,000,000
SEK
|
0
SEK
|
— | — | — | — | — | — | — |
| Comprehensive income | — |
3,818,000,000
SEK
|
4,105,000,000
SEK
|
4,863,000,000
SEK
|
— | — |
0
SEK
|
0
SEK
|
— | — | — | — | — |
4,531,000,000
SEK
|
619,000,000
SEK
|
— |
1,130,000,000
SEK
|
— | — | — | — |
486,000,000
SEK
|
0
SEK
|
0
SEK
|
— | — |
0
SEK
|
296 ,3
SEK
|
6,604,000,000
SEK
|
— | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — | — |
0
SEK
|
0
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
0
SEK
|
0
SEK
|
— | — | — | — | — | — | — |