Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||||
| Equity |
18 416
SEK
|
— | — | — | — | — | — |
39,000,000
SEK
|
13 485
SEK
|
96,000,000
SEK
|
275,000,000
SEK
|
18 378
SEK
|
763,000,000
SEK
|
3 760
SEK
|
— | — |
8,000,000
SEK
|
17 236
SEK
|
12 573
SEK
|
96,000,000
SEK
|
32,000,000
SEK
|
17 268
SEK
|
800,000,000
SEK
|
3 760
SEK
|
— |
12 573
SEK
|
3 760
SEK
|
— | — |
17 268
SEK
|
800,000,000
SEK
|
— |
17 236
SEK
|
— |
8,000,000
SEK
|
96,000,000
SEK
|
32,000,000
SEK
|
— | — | — |
–
SEK
|
92,000,000
SEK
|
13 333
SEK
|
9 481
SEK
|
3 760
SEK
|
–
SEK
|
13 333
SEK
|
–
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
–
SEK
|
1 694
SEK
|
1 689
SEK
|
5,000,000
SEK
|
–
SEK
|
–
SEK
|
— | — | — | — | — | — | — |
1 689
SEK
|
–
SEK
|
— | — | — | — | — | — | — | — |
0
SEK
|
— | — |
3 112
SEK
|
–
SEK
|
— | — |
–
SEK
|
— |
–
SEK
|
— | — | — |
–
SEK
|
3 112
SEK
|
3 112
SEK
|
— | — | — | — | — | — | — | — |
| Other comprehensive income | — |
–
SEK
|
269,000,000
SEK
|
–
SEK
|
3,000,000
SEK
|
–
SEK
|
–
SEK
|
— | — | — | — | — | — | — |
266,000,000
SEK
|
266,000,000
SEK
|
— | — | — | — | — | — | — | — |
1,000,000
SEK
|
— | — |
8,000,000
SEK
|
–
SEK
|
— | — |
8,000,000
SEK
|
— |
–
SEK
|
— | — | — |
–
SEK
|
9,000,000
SEK
|
–
SEK
|
— | — | — | — | — | — | — | — |
| Comprehensive income | — |
–
SEK
|
1 962
SEK
|
1 689
SEK
|
7,000,000
SEK
|
–
SEK
|
–
SEK
|
— | — | — | — | — | — | — |
1 955
SEK
|
266,000,000
SEK
|
— | — | — | — | — | — | — | — |
1,000,000
SEK
|
— | — |
3 120
SEK
|
–
SEK
|
— | — |
8,000,000
SEK
|
— |
–
SEK
|
— | — | — |
–
SEK
|
3 121
SEK
|
3 112
SEK
|
— | — | — | — | — | — | — | — |
| Issue of equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
–
SEK
|
— | — |
743,000,000
SEK
|
–
SEK
|
— | — |
–
SEK
|
— |
3,000,000
SEK
|
— | — | — |
–
SEK
|
743,000,000
SEK
|
740,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
–
SEK
|
726,000,000
SEK
|
726,000,000
SEK
|
–
SEK
|
–
SEK
|
–
SEK
|
— | — | — | — | — | — | — |
726,000,000
SEK
|
–
SEK
|
— | — | — | — | — | — | — | — |
–
SEK
|
— | — |
753,000,000
SEK
|
–
SEK
|
— | — |
–
SEK
|
— |
–
SEK
|
— | — | — |
–
SEK
|
753,000,000
SEK
|
753,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity | — |
–
SEK
|
0
SEK
|
0
SEK
|
0
SEK
|
–
SEK
|
–
SEK
|
— | — | — | — | — | — | — |
0
SEK
|
–
SEK
|
— | — | — | — | — | — | — | — |
31,000,000
SEK
|
— | — |
–
SEK
|
–
SEK
|
— | — |
–
SEK
|
— |
–
SEK
|
— | — | — |
–
SEK
|
31,000,000
SEK
|
–
SEK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
–
SEK
|
4,000,000
SEK
|
4,000,000
SEK
|
–
SEK
|
–
SEK
|
–
SEK
|
— | — | — | — | — | — | — |
4,000,000
SEK
|
–
SEK
|
— | — | — | — | — | — | — | — |
–
SEK
|
— | — |
3,000,000
SEK
|
–
SEK
|
— | — |
–
SEK
|
— |
–
SEK
|
— | — | — |
–
SEK
|
3,000,000
SEK
|
3,000,000
SEK
|
— | — | — | — | — | — | — | — |