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] | ||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||
| Property, plant and equipment |
22,000,000
SEK
|
— | — | — | — | — |
15,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
1 092
SEK
|
— | — | — | — | — |
897,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Investment property |
83 257
SEK
|
— | — | — | — | — |
76 648
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Goodwill |
234,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method |
167,000,000
SEK
|
— | — | — | — | — |
133,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other non-current non-financial assets |
90,000,000
SEK
|
— | — | — | — | — |
102,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current assets |
85 558
SEK
|
— | — | — | — | — |
78 689
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||
| Cash and cash equivalents |
131,000,000
SEK
|
— | — | — | — | — |
20,000,000
SEK
|
— | — | — | — | — | — | — | — |
24,000,000
SEK
|
— | — |
| Current assets |
2 430
SEK
|
— | — | — | — | — |
47 7
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Assets |
87 988
SEK
|
— | — | — | — | — |
79 166
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital |
5 097
SEK
|
— | — | — | — | — |
5 097
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
37 060
SEK
|
— | — | — | — | — |
33 428
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests |
0
SEK
|
— | — | — | — | — |
0
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
4 5 1 74
SEK
|
37 060
SEK
|
3,017,000,000
SEK
|
45 174
SEK
|
0
SEK
|
5 097
SEK
|
41 542
SEK
|
33 428
SEK
|
5 097
SEK
|
0
SEK
|
3 017
SEK
|
41 542
SEK
|
31 880
SEK
|
74,000,000
SEK
|
39 993
SEK
|
40 068
SEK
|
3 017
SEK
|
5 097
SEK
|
| Liabilities [abstract] | ||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||
| Non-current provisions |
1 97
SEK
|
— | — | — | — | — |
183,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities |
9 603
SEK
|
— | — | — | — | — |
8 288
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities |
38 676
SEK
|
— | — | — | — | — |
33 729
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||
| Current provisions [abstract] | ||||||||||||||||||
| Current provisions |
0
SEK
|
— | — | — | — | — |
0
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities, current |
0
SEK
|
— | — | — | — | — |
19,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities |
4 138
SEK
|
— | — | — | — | — |
3 895
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
87 988
SEK
|
— | — | — | — | — |
79 166
SEK
|
— | — | — | — | — | — | — | — | — | — | — |