Statement Of Financial Position [Abstract]
| Concept |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||
| Assets [abstract] | ||||||||||||
| Non-current assets [abstract] | ||||||||||||
| Property, plant and equipment |
510,000,000
SEK
|
— | — | — |
259,000,000
SEK
|
— | — | — | — | — | — | — |
| Right-of-use assets |
7,110,000,000
SEK
|
— | — | — |
7,154,000,000
SEK
|
— | — | — | — | — | — | — |
| Investment property |
49 546,9
SEK
|
— | — | — |
48 789,6
SEK
|
— | — | — | — | — | — | — |
| Other non-current financial assets |
251,000,000
SEK
|
— | — | — |
249,000,000
SEK
|
— | — | — | — | — | — | — |
| Non-current assets |
50 423,3
SEK
|
— | — | — |
49 652,5
SEK
|
— | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||
| Current tax assets, current |
–
SEK
|
— | — | — |
3,000,000
SEK
|
— | — | — | — | — | — | — |
| Cash and cash equivalents |
4,530,000,000
SEK
|
— | — | — |
1 182,0
SEK
|
— | — | — |
7,836,000,000
SEK
|
— | — | — |
| Current assets |
8,121,000,000
SEK
|
— | — | — |
1 446,3
SEK
|
— | — | — | — | — | — | — |
| Assets |
51 235,4
SEK
|
— | — | — |
51 098,8
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||
| Equity [abstract] | ||||||||||||
| Issued capital |
1 056,4
SEK
|
— | — | — |
1 056,4
SEK
|
— | — | — | — | — | — | — |
| Retained earnings |
29 577,5
SEK
|
— | — | — |
29 381,5
SEK
|
— | — | — | — | — | — | — |
| Equity |
31 262,0
SEK
|
29 577,5
SEK
|
1 056,4
SEK
|
6,281,000,000
SEK
|
31 066,0
SEK
|
29 381,5
SEK
|
6,281,000,000
SEK
|
1 056,4
SEK
|
28 616,5
SEK
|
1 056,4
SEK
|
26 932,0
SEK
|
6,281,000,000
SEK
|
| Liabilities [abstract] | ||||||||||||
| Non-current liabilities [abstract] | ||||||||||||
| Non-current provisions [abstract] | ||||||||||||
| Non-current provisions for employee benefits |
317,000,000
SEK
|
— | — | — |
319,000,000
SEK
|
— | — | — | — | — | — | — |
| Deferred tax liabilities |
9 253,2
SEK
|
— | — | — |
9 162,1
SEK
|
— | — | — | — | — | — | — |
| Non-current liabilities |
16 591,7
SEK
|
— | — | — |
16 988,6
SEK
|
— | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||
| Current tax liabilities, current |
273,000,000
SEK
|
— | — | — |
–
SEK
|
— | — | — | — | — | — | — |
| Current liabilities |
3 381,7
SEK
|
— | — | — |
3 044,2
SEK
|
— | — | — | — | — | — | — |
| Liabilities |
19 973,4
SEK
|
— | — | — |
20 032,8
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities |
51 235,4
SEK
|
— | — | — |
51 098,8
SEK
|
— | — | — | — | — | — | — |