Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 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 |
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 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||
| Equity | — | — |
23 226
SEK
|
— | — |
3 960
SEK
|
— |
333,000,000
SEK
|
27 519
SEK
|
— | — | — |
3 960
SEK
|
24 849
SEK
|
333,000,000
SEK
|
29 141
SEK
|
— | — |
21 248
SEK
|
25 541
SEK
|
3 960
SEK
|
333,000,000
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||
| Profit (loss) |
954,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
4 288
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
-
SEK
|
— | — | — | — | — | — | — | — | — |
-
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — |
954,000,000
SEK
|
— |
954,000,000
SEK
|
-
SEK
|
— |
-
SEK
|
— | — |
-
SEK
|
— |
4 288
SEK
|
— | — | — | — |
4 288
SEK
|
-
SEK
|
— | — | — | — |
| Dividends recognised as distributions to owners | — |
668,000,000
SEK
|
— |
668,000,000
SEK
|
-
SEK
|
— |
-
SEK
|
— | — |
-
SEK
|
— |
657,000,000
SEK
|
— | — | — | — |
657,000,000
SEK
|
-
SEK
|
— | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — | — | — | — | — | — | — | — |
-
SEK
|
— |
30,000,000
SEK
|
— | — | — | — |
30,000,000
SEK
|
-
SEK
|
— | — | — | — |