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
|
— | — | — | — | — |
26,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
355,000,000
SEK
|
— | — | — | — | — |
368,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Investment property |
46 067
SEK
|
— | — | — | — | — |
37 264
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements |
8 784
SEK
|
— | — | — | — | — |
5 945
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other non-current financial assets |
714,000,000
SEK
|
— | — | — | — | — |
587,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current assets |
57 020
SEK
|
— | — | — | — | — |
45 429
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||
| Trade and other current receivables |
256,000,000
SEK
|
— | — | — | — | — |
121,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Other current financial assets |
4 772
SEK
|
— | — | — | — | — |
73 8
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
84,000,000
SEK
|
— | — | — | — | — |
24,000,000
SEK
|
— | — | — | — | — | — | — | — |
86,000,000
SEK
|
— | — |
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
–
SEK
|
— | — | — | — | — |
28 4
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets |
5 452
SEK
|
— | — | — | — | — |
1 193
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Assets |
62 472
SEK
|
— | — | — | — | — |
46 622
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital |
78 0
SEK
|
— | — | — | — | — |
808,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
26 228
SEK
|
— | — | — | — | — |
17 78 5
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Share premium |
3 578
SEK
|
— | — | — | — | — |
3 522
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
31 079
SEK
|
26 228
SEK
|
493,000,000
SEK
|
31 079
SEK
|
3 578
SEK
|
780,000,000
SEK
|
22 452
SEK
|
808,000,000
SEK
|
17 76 5
SEK
|
338,000,000
SEK
|
3 542
SEK
|
22 452
SEK
|
675,000,000
SEK
|
19 2 57
SEK
|
14 76 0
SEK
|
— |
3 046
SEK
|
7 76
SEK
|
| Liabilities [abstract] | ||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||
| Deferred tax liabilities |
3 087
SEK
|
— | — | — | — | — |
2 4 76
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities |
2 7 114
SEK
|
— | — | — | — | — |
21 110
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||
| Current liabilities |
4 279
SEK
|
— | — | — | — | — |
3 060
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
31 393
SEK
|
— | — | — | — | — |
2 4 17 0
SEK
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
62 472
SEK
|
— | — | — | — | — |
46 622
SEK
|
— | — | — | — | — | — | — | — | — | — | — |