Statement Of Financial Position [Abstract]
| Concept |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||
| Assets [abstract] | ||||||||||||
| Property, plant and equipment | — | — |
591,000,000
SEK
|
— | — | — | — |
663,000,000
SEK
|
— | — | — | — |
| Right-of-use assets | — | — |
7,344,000,000
SEK
|
— | — | — | — |
7,279,000,000
SEK
|
— | — | — | — |
| Investment property | — | — |
47 115,4
SEK
|
— | — | — | — |
46 742,8
SEK
|
— | — | — | — |
| Cash and cash equivalents | — | — |
4,726,000,000
SEK
|
— | — | — | — |
3,824,000,000
SEK
|
4,530,000,000
SEK
|
— | — | — |
| Assets | — | — |
48 874,2
SEK
|
— | — | — | — |
48 443,6
SEK
|
— | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||
| Equity [abstract] | ||||||||||||
| Issued capital | — | — |
1 056,4
SEK
|
— | — | — | — |
1 056,4
SEK
|
— | — | — | — |
| Retained earnings | — | — |
26 922,4
SEK
|
— | — | — | — |
27 104,1
SEK
|
— | — | — | — |
| Equity |
26 922,4
SEK
|
6,281,000,000
SEK
|
28 606,9
SEK
|
1 056,4
SEK
|
1 056,4
SEK
|
6,281,000,000
SEK
|
27 104,1
SEK
|
28 788,6
SEK
|
31 262,0
SEK
|
1 056,4
SEK
|
29 577,5
SEK
|
6,281,000,000
SEK
|
| Liabilities [abstract] | ||||||||||||
| Deferred tax liabilities | — | — |
8 635,9
SEK
|
— | — | — | — |
8 574,8
SEK
|
— | — | — | — |
| Liabilities | — | — |
20 267,3
SEK
|
— | — | — | — |
19 655,0
SEK
|
— | — | — | — |
| Equity and liabilities | — | — |
48 874,2
SEK
|
— | — | — | — |
48 443,6
SEK
|
— | — | — | — |