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 |
As at 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 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
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 |
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 |
As at 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 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||
| Equity |
605 653
SEK
|
— | — | — |
977,000,000
SEK
|
— | — |
788,000,000
SEK
|
13 533
SEK
|
570 387
SEK
|
4 795
SEK
|
14 880
SEK
|
604 865
SEK
|
— |
2 74
SEK
|
— |
19,000,000
SEK
|
— | — |
657 379
SEK
|
972,000,000
SEK
|
153,000,000
SEK
|
— | — | — | — |
683 505
SEK
|
66,000,000
SEK
|
— |
68 2 6 14
SEK
|
13 533
SEK
|
5 847
SEK
|
4 795
SEK
|
8 91
SEK
|
— | — |
438 534
SEK
|
2 616
SEK
|
939,000,000
SEK
|
16 5
SEK
|
1 3 3
SEK
|
4 61 8 37
SEK
|
4 795
SEK
|
2 327
SEK
|
13 533
SEK
|
4 62 775
SEK
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
74 7 6 2
SEK
|
74 6 81
SEK
|
81,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
74 6 81
SEK
|
— | — |
1 0 0
SEK
|
— | — | — | — | — | — |
228 065
SEK
|
— | — | — | — | — | — | — | — |
227 965
SEK
|
228 065
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — |
9 550
SEK
|
254,000,000
SEK
|
43,000,000
SEK
|
— |
85,000,000
SEK
|
13,000,000
SEK
|
— | — | — | — | — | — |
121,000,000
SEK
|
— |
9 506
SEK
|
— |
9 033
SEK
|
26,000,000
SEK
|
— | — | — |
1 2
SEK
|
67,000,000
SEK
|
21,000,000
SEK
|
3 642
SEK
|
— | — |
3 520
SEK
|
— | — | — | — | — |
3 668
SEK
|
46,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — |
65 212
SEK
|
74 4 2 7
SEK
|
37,000,000
SEK
|
— |
85,000,000
SEK
|
13,000,000
SEK
|
— | — | — | — | — | — |
121,000,000
SEK
|
— |
6 5 175
SEK
|
— |
9 033
SEK
|
74,000,000
SEK
|
— | — | — |
1 2
SEK
|
67,000,000
SEK
|
21,000,000
SEK
|
231 708
SEK
|
— | — |
3 520
SEK
|
— | — | — | — | — |
231 633
SEK
|
228 111
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
12 25 4
SEK
|
12 25 4
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
1 2 2 5 4
SEK
|
— | — | — | — | — | — | — | — | — |
10 722
SEK
|
— | — | — | — | — | — | — | — |
10 722
SEK
|
10 722
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity | — |
2 8 2
SEK
|
21 6
SEK
|
66,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
21 6
SEK
|
— | — |
646,000,000
SEK
|
— | — | — | — | — | — |
1 2 6
SEK
|
— | — | — | — | — | — | — | — |
521,000,000
SEK
|
1 2 6
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
21,000,000
SEK
|
21,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — |
21,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
8,000,000
SEK
|
— | — | — | — | — | — | — | — |
8,000,000
SEK
|
8,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |