Statement Of Changes In Equity [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
2024-01-01 to 2024-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 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 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||||||||||
| Equity | — | — | — |
95,045,000,000
SEK
|
31,654,000,000
SEK
|
— |
61,000,000
SEK
|
4,738,000,000
SEK
|
4,507,000,000
SEK
|
— | — |
137,461,000,000
SEK
|
— | — |
2,258,000,000
SEK
|
142,199,000,000
SEK
|
8,452,000,000
SEK
|
— | — |
130,485,000,000
SEK
|
— |
80,096,000,000
SEK
|
— | — | — |
4,114,000,000
SEK
|
— |
31,654,000,000
SEK
|
— |
61,000,000
SEK
|
4,092,000,000
SEK
|
2,016,000,000
SEK
|
— |
126,371,000,000
SEK
|
8,452,000,000
SEK
|
— |
117,278,000,000
SEK
|
3,331,000,000
SEK
|
31,654,000,000
SEK
|
68,353,000,000
SEK
|
61,000,000
SEK
|
4,999,000,000
SEK
|
428,000,000
SEK
|
113,947,000,000
SEK
|
8,452,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
15,401,000,000
SEK
|
—
SEK
|
—
SEK
|
— | — |
—
SEK
|
— | — | — |
15,401,000,000
SEK
|
533,000,000
SEK
|
— |
15,934,000,000
SEK
|
—
SEK
|
— | — | — |
—
SEK
|
14,066,000,000
SEK
|
— |
13,053,000,000
SEK
|
— |
1,013,000,000
SEK
|
13,053,000,000
SEK
|
—
SEK
|
— |
—
SEK
|
— |
—
SEK
|
— | — | — |
—
SEK
|
— | — |
—
SEK
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income |
4,116,000,000
SEK
|
—
SEK
|
—
SEK
|
— | — |
415,000,000
SEK
|
— | — | — |
257,000,000
SEK
|
299,000,000
SEK
|
— |
3,817,000,000
SEK
|
4,274,000,000
SEK
|
— | — | — |
—
SEK
|
959,000,000
SEK
|
— |
710,000,000
SEK
|
— |
249,000,000
SEK
|
1,391,000,000
SEK
|
—
SEK
|
— |
907,000,000
SEK
|
— |
—
SEK
|
— | — | — |
1,588,000,000
SEK
|
— | — |
—
SEK
|
— | — | — | — | — | — | — | — | — |
| Comprehensive income |
11,285,000,000
SEK
|
—
SEK
|
—
SEK
|
— | — |
415,000,000
SEK
|
— | — | — |
15,144,000,000
SEK
|
832,000,000
SEK
|
— |
12,117,000,000
SEK
|
4,274,000,000
SEK
|
— | — | — |
—
SEK
|
13,107,000,000
SEK
|
— |
12,343,000,000
SEK
|
— |
764,000,000
SEK
|
11,662,000,000
SEK
|
—
SEK
|
— |
907,000,000
SEK
|
— |
—
SEK
|
— | — | — |
1,588,000,000
SEK
|
— | — |
—
SEK
|
— | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
90,000,000
SEK
|
30,000,000
SEK
|
—
SEK
|
— | — |
—
SEK
|
— | — | — |
60,000,000
SEK
|
—
SEK
|
— |
90,000,000
SEK
|
—
SEK
|
— | — | — |
—
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
—
SEK
|
— |
19,000,000
SEK
|
— |
19,000,000
SEK
|
19,000,000
SEK
|
—
SEK
|
— |
—
SEK
|
— |
—
SEK
|
— | — | — |
—
SEK
|
— | — |
—
SEK
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
17,000,000
SEK
|
—
SEK
|
—
SEK
|
— | — |
—
SEK
|
— | — | — |
17,000,000
SEK
|
—
SEK
|
— |
17,000,000
SEK
|
—
SEK
|
— | — | — |
—
SEK
|
109,000,000
SEK
|
— |
109,000,000
SEK
|
— |
—
SEK
|
109,000,000
SEK
|
—
SEK
|
— |
—
SEK
|
— |
—
SEK
|
— | — | — |
—
SEK
|
— | — |
—
SEK
|
— | — | — | — | — | — | — | — | — |