Statement Of Changes In Equity [Abstract]
| Concept |
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 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||
| Statement of changes in equity [line items] | ||||||||||
| Dividends recognised as distributions to non-controlling interests |
129,000,000
SEK
|
— |
129,000,000
SEK
|
— | — | — | — | — | — | — |
| Increase (decrease) through acquisition of subsidiary, equity |
85,000,000
SEK
|
— |
85,000,000
SEK
|
— | — | — | — | — | — | — |
| Increase (decrease) through transactions with owners, equity |
62,000,000
SEK
|
2,000,000
SEK
|
64,000,000
SEK
|
2,000,000
SEK
|
5,000,000
SEK
|
7,000,000
SEK
|
2 647
SEK
|
2 78
SEK
|
2 9 23
SEK
|
2 9 25
SEK
|