Statement Of Changes In Equity [Abstract]
| Concept |
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 |
As at 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 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 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 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||||
| Equity |
6 0 9, 6
SEK
|
— |
61, 9
SEK
|
— |
296, 3
SEK
|
2 ,1
SEK
|
0
SEK
|
— | — |
296, 3
SEK
|
— |
460, 2
SEK
|
3 81, 8
SEK
|
— | — | — | — |
5 0,7
SEK
|
1 1 0 , 9
SEK
|
619,000,000
SEK
|
7 9 5 ,1
SEK
|
3 8 1, 8
SEK
|
— | — | — |
4 11, 5
SEK
|
— |
0
SEK
|
— |
7 9 5 ,1
SEK
|
— | — |
1 055,6
SEK
|
5 31, 2
SEK
|
619,000,000
SEK
|
2 , 2
SEK
|
118 ,1
SEK
|
3 5 ,1
SEK
|
3 8 1, 8
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||
| Other comprehensive income | — |
113 , 0
SEK
|
— |
161, 6
SEK
|
— | — | — |
48 ,6
SEK
|
0
SEK
|
— | — | — | — | — |
161 , 6
SEK
|
0
SEK
|
1,945,000,000
SEK
|
— | — | — | — | — |
22,000,000
SEK
|
1 , 4
SEK
|
7 5 , 8
SEK
|
— | — | — | — | — |
11 9 , 6
SEK
|
19 4 , 5
SEK
|
— | — | — | — | — | — | — |
| Comprehensive income | — |
1 13,0
SEK
|
— |
4,987,000,000
SEK
|
— | — | — |
486,000,000
SEK
|
0
SEK
|
— |
0
SEK
|
— | — |
0, 0
SEK
|
— |
6,604,000,000
SEK
|
— | — | — | — | — | — |
0
SEK
|
6 7, 4
SEK
|
7 5 , 8
SEK
|
— |
0, 0
SEK
|
— |
0
SEK
|
— |
1,196,000,000
SEK
|
26 0, 6
SEK
|
— | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — | — | — |
0, 0
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
0
SEK
|
— | — | — | — | — | — | — |
0
SEK
|
— | — | — | — | — | — | — |
0
SEK
|
— | — | — | — | — | — | — |