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 |
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) | — | — |
3 757
SEK
|
867,000,000
SEK
|
— | — |
| Other comprehensive income [abstract] | ||||||
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||
| Cash flow hedges [abstract] | ||||||
| Other comprehensive income, before tax, cash flow hedges | — | — |
5,000,000
SEK
|
13,000,000
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 | — | — |
1,000,000
SEK
|
3,000,000
SEK
|
— | — |
| Other comprehensive income |
4,000,000
SEK
|
4,000,000
SEK
|
4,000,000
SEK
|
10,000,000
SEK
|
10,000,000
SEK
|
10,000,000
SEK
|
| Comprehensive income attributable to [abstract] | ||||||
| Comprehensive income, attributable to owners of parent | — | — |
3 761
SEK
|
877,000,000
SEK
|
— | — |