Analysis Of Income And Expense [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 |
|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||
| Revenue [abstract] | ||||||||
| Revenue from construction contracts | — | — |
53 414
SEK
|
— | — |
53 922
SEK
|
— | — |
| Material income and expense [abstract] | ||||||||
| Gains (losses) on disposals of property, plant and equipment [abstract] | ||||||||
| Gains (losses) on disposals of property, plant and equipment | — | — |
16 5
SEK
|
— | — |
3,000,000
SEK
|
— | — |
| Finance income (cost) | — | — |
6 0
SEK
|
— | — |
80,000,000
SEK
|
— | — |
| Selling, general and administrative expense [abstract] | ||||||||
| Selling, general and administrative expense | — | — |
2 808
SEK
|
— | — |
2 967
SEK
|
— | — |
| Expenses by nature [abstract] | ||||||||
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract] | ||||||||
| Impairment loss (reversal of impairment loss) recognised in profit or loss | — | — |
16,000,000
SEK
|
— | — |
24,000,000
SEK
|
— | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | — |
10,000,000
SEK
|
— | — |
12,000,000
SEK
|
— | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||
| Comprehensive income |
15 7
SEK
|
2 413
SEK
|
2 413
SEK
|
2 256
SEK
|
1 347
SEK
|
1 226
SEK
|
1 226
SEK
|
12 1
SEK
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||
| Comprehensive income, attributable to owners of parent | — | — |
2 413
SEK
|
— | — |
1 226
SEK
|
— | — |