Statement Of Financial Position [Abstract]
| Concept |
As at 2023-12-31 |
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 |
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 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Non-current assets [abstract] | |||||||||||||||
| Property, plant and equipment | — | — | — |
17,000,000
SEK
|
— | — |
14,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — |
454,000,000
SEK
|
— | — |
380,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Investment property | — | — | — |
57 0 61
SEK
|
— | — |
52 655
SEK
|
— | — | — | — | — | — | — | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements | — | — | — |
12 2 4 0
SEK
|
— | — |
9 864
SEK
|
— | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — |
168,000,000
SEK
|
— | — |
2 61
SEK
|
— | — | — | — | — | — | — | — |
| Non-current assets | — | — | — |
71 207
SEK
|
— | — |
65 252
SEK
|
— | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||
| Other current financial assets | — | — | — |
752,000,000
SEK
|
— | — |
3 891
SEK
|
— | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
28,000,000
SEK
|
— | — |
76,000,000
SEK
|
— | — | — |
84,000,000
SEK
|
— | — | — | — |
| Current assets other than non-current assets or disposal groups classified as held for sale or as held for distribution to owners | — | — | — |
SEK
|
— | — |
27,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Current assets | — | — | — |
2 203
SEK
|
— | — |
6 840
SEK
|
— | — | — | — | — | — | — | — |
| Assets | — | — | — |
73 410
SEK
|
— | — |
72 092
SEK
|
— | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital | — | — | — |
817,000,000
SEK
|
— | — |
7 81
SEK
|
— | — | — | — | — | — | — | — |
| Retained earnings | — | — | — |
26 838
SEK
|
— | — |
27 988
SEK
|
— | — | — | — | — | — | — | — |
| Share premium | — | — | — |
7 74 6
SEK
|
— | — |
3 616
SEK
|
— | — | — | — | — | — | — | — |
| Equity |
7 74 6
SEK
|
817,000,000
SEK
|
26 838
SEK
|
36 578
SEK
|
1 17 7
SEK
|
1 078
SEK
|
33 463
SEK
|
3 616
SEK
|
27 988
SEK
|
7 81
SEK
|
31 07 9
SEK
|
26 228
SEK
|
493,000,000
SEK
|
3 578
SEK
|
780,000,000
SEK
|
| Liabilities [abstract] | |||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||
| Deferred tax liabilities | — | — | — |
3 954
SEK
|
— | — |
4 040
SEK
|
— | — | — | — | — | — | — | — |
| Non-current liabilities | — | — | — |
30 184
SEK
|
— | — |
34 539
SEK
|
— | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||
| Current liabilities | — | — | — |
6 648
SEK
|
— | — |
4 090
SEK
|
— | — | — | — | — | — | — | — |
| Liabilities | — | — | — |
36 832
SEK
|
— | — |
38 629
SEK
|
— | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — |
73 410
SEK
|
— | — |
72 092
SEK
|
— | — | — | — | — | — | — | — |