Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Other property, plant and equipment |
9,000,000
SEK
|
4,000,000
SEK
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
530,000,000
SEK
|
721,000,000
SEK
|
— |
| Trade and other current receivables [abstract] | |||
| Current trade receivables |
50,000,000
SEK
|
51,000,000
SEK
|
— |
| Current prepayments and current accrued income other than current contract assets [abstract] | |||
| Current prepayments [abstract] | |||
| Current prepaid expenses |
32,000,000
SEK
|
25,000,000
SEK
|
— |
| Other current receivables |
22,000,000
SEK
|
4,000,000
SEK
|
— |
| Current prepayments and current accrued income including current contract assets [abstract] | |||
| Current accrued income including current contract assets [abstract] | |||
| Current contract assets |
27,000,000
SEK
|
24,000,000
SEK
|
— |
| Categories of non-current financial assets [abstract] | |||
| Non-current financial assets |
56,000,000
SEK
|
78,000,000
SEK
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
239,000,000
SEK
|
218,000,000
SEK
|
215,000,000
SEK
|
| Trade and other current payables [abstract] | |||
| Current trade payables |
25,000,000
SEK
|
46,000,000
SEK
|
— |
| Current accruals and current deferred income including current contract liabilities [abstract] | |||
| Current deferred income including current contract liabilities [abstract] | |||
| Current contract liabilities [abstract] | |||
| Current contract liabilities |
199,000,000
SEK
|
200,000,000
SEK
|
— |
| Accruals classified as current |
102,000,000
SEK
|
122,000,000
SEK
|
— |
| Other current payables |
35,000,000
SEK
|
49,000,000
SEK
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Non-current net defined benefit liability |
456,000,000
SEK
|
442,000,000
SEK
|
— |
| Other non-current liabilities |
1,000,000
SEK
|
1,000,000
SEK
|
— |
| Issued capital [abstract] | |||
| Issued capital |
547,000,000
SEK
|
547,000,000
SEK
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
6 051
SEK
|
5 932
SEK
|
— |
| Miscellaneous equity [abstract] | |||
| Additional paid-in capital |
5 885
SEK
|
5 885
SEK
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
1 015
SEK
|
1 191
SEK
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
370,000,000
SEK
|
329,000,000
SEK
|
— |
| Current liabilities |
398,000,000
SEK
|
462,000,000
SEK
|
— |
| Assets less current liabilities [abstract] |