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 |
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 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 |
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 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||
| Equity | — |
15 732
SEK
|
— |
15 553
SEK
|
— | — |
0
SEK
|
— | — |
251,000,000
SEK
|
257,000,000
SEK
|
15 732
SEK
|
329,000,000
SEK
|
— |
0
SEK
|
— |
15 901
SEK
|
— | — | — | — | — |
0
SEK
|
14 606
SEK
|
251,000,000
SEK
|
485,000,000
SEK
|
15 901
SEK
|
0
SEK
|
— |
559,000,000
SEK
|
— | — |
11 616
SEK
|
0
SEK
|
11 761
SEK
|
-
SEK
|
11 663
SEK
|
97,000,000
SEK
|
47,000,000
SEK
|
0
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
1 574
SEK
|
— |
1 574
SEK
|
— |
-
SEK
|
1 574
SEK
|
— |
-
SEK
|
-
SEK
|
— | — | — | — |
-
SEK
|
— |
-
SEK
|
— |
-
SEK
|
1 483
SEK
|
1 470
SEK
|
12,000,000
SEK
|
-
SEK
|
— | — | — | — | — | — |
1 470
SEK
|
— |
-
SEK
|
-
SEK
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
1 252
SEK
|
— |
1 252
SEK
|
— |
-
SEK
|
25 8
SEK
|
— |
2 27
SEK
|
-
SEK
|
— | — | — | — |
-
SEK
|
— |
76 6
SEK
|
— |
-
SEK
|
1 498
SEK
|
529,000,000
SEK
|
2,000,000
SEK
|
530,000,000
SEK
|
— | — | — | — | — | — |
1 496
SEK
|
— |
438,000,000
SEK
|
-
SEK
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
322,000,000
SEK
|
— |
322,000,000
SEK
|
— |
-
SEK
|
1 316
SEK
|
— |
22 7
SEK
|
-
SEK
|
— | — | — | — |
-
SEK
|
— |
76 6
SEK
|
— |
-
SEK
|
2 981
SEK
|
2 000
SEK
|
14,000,000
SEK
|
530,000,000
SEK
|
— | — | — | — | — | — |
2 967
SEK
|
— |
438,000,000
SEK
|
-
SEK
|
— | — | — | — | — | — | — | — |
| Issue of equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
251,000,000
SEK
|
251,000,000
SEK
|
-
SEK
|
-
SEK
|
-
SEK
|
— | — | — | — | — | — |
2 51
SEK
|
— |
-
SEK
|
-
SEK
|
— | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
351,000,000
SEK
|
— |
351,000,000
SEK
|
— |
-
SEK
|
3 51
SEK
|
— |
-
SEK
|
-
SEK
|
— | — | — | — |
-
SEK
|
— |
-
SEK
|
— |
-
SEK
|
3,000,000
SEK
|
-
SEK
|
3,000,000
SEK
|
-
SEK
|
— | — | — | — | — | — |
-
SEK
|
— |
-
SEK
|
-
SEK
|
— | — | — | — | — | — | — | — |
| Increase through other contributions by owners, equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
-
SEK
|
1 149
SEK
|
1 149
SEK
|
-
SEK
|
-
SEK
|
— | — | — | — | — | — |
1 149
SEK
|
— |
-
SEK
|
-
SEK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
-
SEK
|
12 3
SEK
|
12 3
SEK
|
0
SEK
|
-
SEK
|
— | — | — | — | — | — |
1 2 3
SEK
|
— |
-
SEK
|
-
SEK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
20,000,000
SEK
|
— |
20,000,000
SEK
|
— |
-
SEK
|
2 0
SEK
|
— |
-
SEK
|
-
SEK
|
— | — | — | — |
-
SEK
|
— |
-
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
-
SEK
|
14 5
SEK
|
36,000,000
SEK
|
1 09
SEK
|
-
SEK
|
— | — | — | — | — | — |
36,000,000
SEK
|
— |
-
SEK
|
-
SEK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
2,000,000
SEK
|
— |
2,000,000
SEK
|
— |
-
SEK
|
2,000,000
SEK
|
— |
-
SEK
|
-
SEK
|
— | — | — | — |
-
SEK
|
— |
-
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |