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 |
As at 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 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 | — |
93 9 87
SEK
|
— |
6 9 908
SEK
|
— | — |
11 674
SEK
|
— |
192,000,000
SEK
|
609,000,000
SEK
|
8 2 313
SEK
|
320,000,000
SEK
|
12 50 1
SEK
|
— |
10 2 909
SEK
|
— | — | — | — | — |
12 7 15
SEK
|
76 6 57
SEK
|
192,000,000
SEK
|
493,000,000
SEK
|
90 194
SEK
|
12 50 1
SEK
|
— |
3 51
SEK
|
— | — |
6 6 5 74
SEK
|
10 72 9
SEK
|
88 567
SEK
|
117,000,000
SEK
|
7 7 606
SEK
|
10 96 1
SEK
|
1,000,000
SEK
|
187,000,000
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
7 69 9
SEK
|
— |
6 746
SEK
|
— |
953,000,000
SEK
|
6 746
SEK
|
— | — | — | — | — | — | — | — | — | — |
10 98 9
SEK
|
10 17 5
SEK
|
8 14
SEK
|
— | — | — | — | — | — | — |
10 1 75
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
1 16 2
SEK
|
— |
1 13 3
SEK
|
— |
2 9
SEK
|
— | — |
1 102
SEK
|
— | — | — | — | — |
32,000,000
SEK
|
— | — |
1 886
SEK
|
— |
1 1 57
SEK
|
234,000,000
SEK
|
— | — | — | — | — | — |
728,000,000
SEK
|
— |
494,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Comprehensive income |
8 86 2
SEK
|
— |
7 8 8 0
SEK
|
— |
9 82
SEK
|
6 74 6
SEK
|
— |
1 10 2
SEK
|
— | — | — | — | — |
32,000,000
SEK
|
— | — |
1 2 875
SEK
|
1 0 175
SEK
|
1 97 2
SEK
|
234,000,000
SEK
|
— | — | — | — | — | — |
10 9 03
SEK
|
— |
494,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
| Issue of equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
6,000,000
SEK
|
1 7 78
SEK
|
— | — | — | — | — | — | — | — | — |
1 7 78
SEK
|
— | — |
1 7 72
SEK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
0
SEK
|
— | — | — |
0
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
3,000,000
SEK
|
2,000,000
SEK
|
5,000,000
SEK
|
— | — | — | — | — | — | — |
2,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |
20,000,000
SEK
|
— |
2,000,000
SEK
|
— |
19,000,000
SEK
|
2,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
18 3
SEK
|
91,000,000
SEK
|
92,000,000
SEK
|
— | — | — | — | — | — | — |
91,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |