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 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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||
| Equity | — |
160 332
SEK
|
— | — |
89 838
SEK
|
— |
15 240
SEK
|
— |
52 773
SEK
|
2 480
SEK
|
107 558
SEK
|
153 939
SEK
|
— | — | — | — |
13 358
SEK
|
54 120
SEK
|
83 981
SEK
|
2 480
SEK
|
99 819
SEK
|
— |
83 288
SEK
|
13 813
SEK
|
147 165
SEK
|
99 581
SEK
|
47 584
SEK
|
2 480
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||
| Profit (loss) |
8 678
SEK
|
— |
7 255
SEK
|
— | — |
1 423
SEK
|
— |
7 255
SEK
|
— | — | — | — | — |
5 773
SEK
|
1 514
SEK
|
4 259
SEK
|
— | — | — | — | — |
1 514
SEK
|
— | — | — | — | — | — |
| Other comprehensive income |
1 817
SEK
|
— |
1 835
SEK
|
1 883
SEK
|
— |
18,000,000
SEK
|
— |
48,000,000
SEK
|
— | — | — | — |
456,000,000
SEK
|
3 547
SEK
|
83,000,000
SEK
|
3 919
SEK
|
— | — | — | — | — |
372,000,000
SEK
|
— | — | — | — | — | — |
| Comprehensive income |
10 495
SEK
|
— |
9 090
SEK
|
1 883
SEK
|
— |
1 405
SEK
|
— |
7 207
SEK
|
— | — | — | — |
456,000,000
SEK
|
9 319
SEK
|
1 597
SEK
|
8 178
SEK
|
— | — | — | — | — |
1 142
SEK
|
— | — | — | — | — | — |
| Dividends recognised as distributions to owners |
2 989
SEK
|
— |
992,000,000
SEK
|
— | — |
1 997
SEK
|
— |
992,000,000
SEK
|
— | — | — | — | — |
2 437
SEK
|
930,000,000
SEK
|
1 507
SEK
|
— | — | — | — | — |
930,000,000
SEK
|
— | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
8,000,000
SEK
|
— |
18,000,000
SEK
|
— | — |
26,000,000
SEK
|
— |
18,000,000
SEK
|
— | — | — | — | — |
118,000,000
SEK
|
23,000,000
SEK
|
140,000,000
SEK
|
— | — | — | — | — |
23,000,000
SEK
|
— | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
14,000,000
SEK
|
— |
5,000,000
SEK
|
— | — |
9,000,000
SEK
|
— |
5,000,000
SEK
|
— | — | — | — | — |
9,000,000
SEK
|
3,000,000
SEK
|
6,000,000
SEK
|
— | — | — | — | — |
3,000,000
SEK
|
— | — | — | — | — | — |
| Increase (decrease) in equity |
1 119
SEK
|
— |
380,000,000
SEK
|
— | — |
739,000,000
SEK
|
— |
380,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |