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 |
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 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
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 |
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 |
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 |
As at 2021-12-31 |
As at 2021-12-31 |
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 | — |
564,000,000
SEK
|
— |
1 400
SEK
|
— | — |
2,000,000
SEK
|
— | — |
1,000,000
SEK
|
35,000,000
SEK
|
562,000,000
SEK
|
— |
1 996
SEK
|
754,000,000
SEK
|
1 996
SEK
|
— | — | — |
7,000,000
SEK
|
1,000,000
SEK
|
7,000,000
SEK
|
752,000,000
SEK
|
7,000,000
SEK
|
2,000,000
SEK
|
2,000,000
SEK
|
1 205
SEK
|
1 205
SEK
|
1,000,000
SEK
|
40,000,000
SEK
|
752,000,000
SEK
|
754,000,000
SEK
|
1 996
SEK
|
40,000,000
SEK
|
— | — |
1 116
SEK
|
1 976
SEK
|
842,000,000
SEK
|
840,000,000
SEK
|
2,000,000
SEK
|
21,000,000
SEK
|
1,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
198,000,000
SEK
|
— |
199,000,000
SEK
|
— |
0
SEK
|
199,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
99,000,000
SEK
|
100,000,000
SEK
|
0
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
100,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
4,000,000
SEK
|
— |
4,000,000
SEK
|
— | — | — | — |
4,000,000
SEK
|
— | — | — | — | — | — | — | — |
19,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
19,000,000
SEK
|
19,000,000
SEK
|
— | — | — | — | — | — | — |
| Comprehensive income |
194,000,000
SEK
|
— |
194,000,000
SEK
|
— |
0
SEK
|
199,000,000
SEK
|
— |
4,000,000
SEK
|
— | — | — | — | — | — | — | — |
119,000,000
SEK
|
100,000,000
SEK
|
0
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
119,000,000
SEK
|
19,000,000
SEK
|
— | — | — | — | — | — | — |
| Issue of equity |
0
SEK
|
— |
0
SEK
|
— | — | — | — | — |
0
SEK
|
— | — | — |
0
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
2,000,000
SEK
|
— |
2,000,000
SEK
|
— | — |
2,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
2,000,000
SEK
|
2,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
2,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
9,000,000
SEK
|
— |
9,000,000
SEK
|
— | — |
9,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
8,000,000
SEK
|
8,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
8,000,000
SEK
|
— | — | — | — | — | — | — | — |