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] | ||||||||||||||||||
| Right-of-use assets |
929,000,000
SEK
|
— | — | — | — | — |
971,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Investment property |
76 688
SEK
|
— | — | — | — | — |
70 772
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method |
35 963
SEK
|
— | — | — | — | — |
29 753
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
2 211
SEK
|
— | — | — | — | — |
1 608
SEK
|
— | — | — | — | — | — | — | — | — |
2 628
SEK
|
— |
| Assets |
202 518
SEK
|
— | — | — | — | — |
180 011
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital |
2 480
SEK
|
— | — | — | — | — |
2 480
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
83 288
SEK
|
— | — | — | — | — |
72 728
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other reserves |
13 813
SEK
|
— | — | — | — | — |
10 044
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent |
99 581
SEK
|
— | — | — | — | — |
85 252
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests |
47 584
SEK
|
— | — | — | — | — |
43 471
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
147 165
SEK
|
83 288
SEK
|
13 813
SEK
|
99 581
SEK
|
47 584
SEK
|
2 480
SEK
|
128 723
SEK
|
2 480
SEK
|
72 728
SEK
|
43 471
SEK
|
10 044
SEK
|
85 252
SEK
|
68 528
SEK
|
44 214
SEK
|
10 188
SEK
|
81 196
SEK
|
125 410
SEK
|
2 480
SEK
|
| Liabilities [abstract] | ||||||||||||||||||
| Liabilities |
55 353
SEK
|
— | — | — | — | — |
51 288
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
202 518
SEK
|
— | — | — | — | — |
180 011
SEK
|
— | — | — | — | — | — | — | — | — | — | — |