Statement Of Comprehensive Income [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2020-12-31 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 |
2019-12-31 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||
| Other comprehensive income [abstract] | ||||||||
| Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] | ||||||||
| Exchange differences on translation [abstract] | ||||||||
| Gains (losses) on exchange differences on translation of foreign operations, net of tax | — | — |
20,000,000
SEK
|
— | — |
77,000,000
SEK
|
— | — |
| Other comprehensive income |
20,000,000
SEK
|
— |
20,000,000
SEK
|
— | — |
77,000,000
SEK
|
— |
77,000,000
SEK
|
| Comprehensive income attributable to [abstract] | ||||||||
| Comprehensive income, attributable to owners of parent |
20,000,000
SEK
|
1,687,000,000
SEK
|
1,687,000,000
SEK
|
1,667,000,000
SEK
|
954,000,000
SEK
|
877,000,000
SEK
|
877,000,000
SEK
|
77,000,000
SEK
|