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 |
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 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
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 |
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 |
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 | — |
6 175
SEK
|
— | — |
2 866
SEK
|
— |
39,000,000
SEK
|
— |
137,000,000
SEK
|
141,000,000
SEK
|
6 038
SEK
|
2 993
SEK
|
5 926
SEK
|
— | — | — | — | — |
61,000,000
SEK
|
125,000,000
SEK
|
2 606
SEK
|
141,000,000
SEK
|
5 801
SEK
|
2 993
SEK
|
— | — |
2 356
SEK
|
317,000,000
SEK
|
2 993
SEK
|
5 229
SEK
|
5 174
SEK
|
55,000,000
SEK
|
141,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||
| Profit (loss) |
451,000,000
SEK
|
— |
419,000,000
SEK
|
— | — |
31,000,000
SEK
|
— |
419,000,000
SEK
|
— | — | — | — | — | — | — |
477,000,000
SEK
|
454,000,000
SEK
|
23,000,000
SEK
|
— | — | — | — | — | — |
454,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
25,000,000
SEK
|
— |
23,000,000
SEK
|
22,000,000
SEK
|
— |
2,000,000
SEK
|
— |
1,000,000
SEK
|
— | — | — | — | — | — |
377,000,000
SEK
|
385,000,000
SEK
|
2,000,000
SEK
|
5,000,000
SEK
|
— | — | — | — | — | — |
379,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
426,000,000
SEK
|
— |
396,000,000
SEK
|
22,000,000
SEK
|
— |
29,000,000
SEK
|
— |
419,000,000
SEK
|
— | — | — | — | — |
–
SEK
|
377,000,000
SEK
|
861,000,000
SEK
|
456,000,000
SEK
|
28,000,000
SEK
|
— | — | — | — | — | — |
833,000,000
SEK
|
–
SEK
|
— | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
201,000,000
SEK
|
— |
185,000,000
SEK
|
— | — |
16,000,000
SEK
|
— |
185,000,000
SEK
|
— | — | — | — | — | — | — |
184,000,000
SEK
|
168,000,000
SEK
|
16,000,000
SEK
|
— | — | — | — | — | — |
168,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
18,000,000
SEK
|
— |
18,000,000
SEK
|
— | — | — | — |
18,000,000
SEK
|
— | — | — | — | — | — | — |
23,000,000
SEK
|
23,000,000
SEK
|
— | — | — | — | — | — | — |
23,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |
7,000,000
SEK
|
— |
6,000,000
SEK
|
— | — |
1,000,000
SEK
|
— |
6,000,000
SEK
|
— | — | — | — | — | — | — |
48,000,000
SEK
|
9,000,000
SEK
|
57,000,000
SEK
|
— | — | — | — | — | — |
9,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
14,000,000
SEK
|
— |
14,000,000
SEK
|
— | — | — | — |
14,000,000
SEK
|
— | — | — | — | — | — | — |
6,000,000
SEK
|
6,000,000
SEK
|
— | — | — | — | — | — | — |
6,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) in equity |
176,000,000
SEK
|
— |
159,000,000
SEK
|
-
SEK
|
— |
17,000,000
SEK
|
— |
159,000,000
SEK
|
— | — | — | — | — |
–
SEK
|
–
SEK
|
164,000,000
SEK
|
206,000,000
SEK
|
42,000,000
SEK
|
— | — | — | — | — | — |
206,000,000
SEK
|
–
SEK
|
— | — | — | — | — | — | — |