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) |
23,000,000
SEK
|
— |
14 461
SEK
|
14 484
SEK
|
14 461
SEK
|
8 735
SEK
|
8 721
SEK
|
14,000,000
SEK
|
8 735
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 | — | — | — |
2 492
SEK
|
— | — |
1 146
SEK
|
— | — | — |
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||||
| Exchange differences on translation [abstract] | ||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations | — | — | — |
3 846
SEK
|
— | — |
4 754
SEK
|
— | — | — |
| Cash flow hedges [abstract] | ||||||||||
| Gains (losses) on cash flow hedges, before tax | — | — | — |
48,000,000
SEK
|
— | — |
28,000,000
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 | — | — | — |
501,000,000
SEK
|
— | — |
225,000,000
SEK
|
— | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] | ||||||||||
| Income tax relating to cash flow hedges included in other comprehensive income | — | — | — |
11,000,000
SEK
|
— | — |
8,000,000
SEK
|
— | — | — |
| Other comprehensive income |
11,000,000
SEK
|
3 871
SEK
|
5 862
SEK
|
5 873
SEK
|
1 991
SEK
|
921,000,000
SEK
|
5 655
SEK
|
3,000,000
SEK
|
5 657
SEK
|
4 736
SEK
|
| Comprehensive income |
34,000,000
SEK
|
3 871
SEK
|
20 323
SEK
|
20 357
SEK
|
16 452
SEK
|
7 814
SEK
|
3 066
SEK
|
11,000,000
SEK
|
3 077
SEK
|
4 736
SEK
|
| Comprehensive income attributable to [abstract] | ||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — |
20 323
SEK
|
— | — |
3 077
SEK
|
— | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — |
34,000,000
SEK
|
— | — |
11,000,000
SEK
|
— | — | — |