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 |
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) |
8,700,000
SEK
|
322,300,000
SEK
|
331,100,000
SEK
|
322,300,000
SEK
|
287,100,000
SEK
|
291,900,000
SEK
|
4,800,000
SEK
|
287,100,000
SEK
|
| Other comprehensive income [abstract] | ||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] | ||||||||
| Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans | — | — |
8,800,000
SEK
|
— | — |
8,900,000
SEK
|
— | — |
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||
| Exchange differences on translation [abstract] | ||||||||
| Gains (losses) on exchange differences on translation of foreign operations, before tax | — | — |
178,500,000
SEK
|
— | — |
224,900,000
SEK
|
— | — |
| Hedges of net investment in foreign operations [abstract] | ||||||||
| Other comprehensive income, before tax, hedges of net investments in foreign operations | — | — |
9,600,000
SEK
|
— | — |
15,700,000
SEK
|
— | — |
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract] | ||||||||
| Income tax relating to remeasurements of defined benefit plans included in other comprehensive income | — | — |
2,600,000
SEK
|
— | — |
2,600,000
SEK
|
— | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] | ||||||||
| Income tax relating to hedges of net investments in foreign operations included in other comprehensive income | — | — |
2,000,000
SEK
|
— | — |
3,200,000
SEK
|
— | — |
| Other comprehensive income |
300,000
SEK
|
176,800,000
SEK
|
177,100,000
SEK
|
176,800,000
SEK
|
217,600,000
SEK
|
218,700,000
SEK
|
1,100,000
SEK
|
217,600,000
SEK
|
| Comprehensive income | — | — |
508,200,000
SEK
|
— | — |
73,200,000
SEK
|
— | — |
| Comprehensive income attributable to [abstract] | ||||||||
| Comprehensive income, attributable to owners of parent | — | — |
499,200,000
SEK
|
— | — |
69,500,000
SEK
|
— | — |
| Comprehensive income, attributable to non-controlling interests | — | — |
9,000,000
SEK
|
— | — |
3,700,000
SEK
|
— | — |