Statement Of Financial Position [Abstract]
| Concept |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||
| Property, plant and equipment |
8,753,000,000
SEK
|
— | — | — | — | — |
8,026,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
1,264,000,000
SEK
|
— | — | — | — | — |
1,338,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
4,325,000,000
SEK
|
— | — | — | — | — |
2,756,000,000
SEK
|
— | — | — | — | — | — | — | — |
442,000,000
SEK
|
— | — |
| Assets |
129,975,000,000
SEK
|
— | — | — | — | — |
117,428,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital |
371,000,000
SEK
|
— | — | — | — | — |
371,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
54,299,000,000
SEK
|
— | — | — | — | — |
47,030,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other reserves |
5,237,000,000
SEK
|
— | — | — | — | — |
1,794,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent |
69,582,000,000
SEK
|
— | — | — | — | — |
58,870,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests |
9,000,000
SEK
|
— | — | — | — | — |
9,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
69,592,000,000
SEK
|
54,299,000,000
SEK
|
5,237,000,000
SEK
|
9,675,000,000
SEK
|
9,000,000
SEK
|
371,000,000
SEK
|
58,879,000,000
SEK
|
371,000,000
SEK
|
47,030,000,000
SEK
|
9,000,000
SEK
|
9,675,000,000
SEK
|
1,794,000,000
SEK
|
42,369,000,000
SEK
|
11,000,000
SEK
|
6,728,000,000
SEK
|
59,154,000,000
SEK
|
9,675,000,000
SEK
|
371,000,000
SEK
|
| Liabilities [abstract] | ||||||||||||||||||
| Current tax liabilities |
1,598,000,000
SEK
|
— | — | — | — | — |
1,341,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities |
2,581,000,000
SEK
|
— | — | — | — | — |
2,868,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
129,975,000,000
SEK
|
— | — | — | — | — |
117,428,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |