Statement Of Comprehensive Income [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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||
| Profit (loss) |
55,000,000
SEK
|
— |
5,682,000,000
SEK
|
5,737,000,000
SEK
|
5,682,000,000
SEK
|
3,967,000,000
SEK
|
3,969,000,000
SEK
|
3,967,000,000
SEK
|
3,000,000
SEK
|
— |
| Other comprehensive income [abstract] | ||||||||||
| Other comprehensive income | — |
770,000,000
SEK
|
770,000,000
SEK
|
770,000,000
SEK
|
— | — |
996,000,000
SEK
|
996,000,000
SEK
|
— |
996,000,000
SEK
|
| Comprehensive income | — | — | — |
6,507,000,000
SEK
|
— | — |
2,974,000,000
SEK
|
— | — | — |
| Comprehensive income attributable to [abstract] | ||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — |
5,682,000,000
SEK
|
— | — |
3,966,000,000
SEK
|
— | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — |
55,000,000
SEK
|
— | — |
3,000,000
SEK
|
— | — | — |