Statement Of Comprehensive Income [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||
| Profit (loss) |
413,000,000
SEK
|
6,887,000,000
SEK
|
—
SEK
|
—
SEK
|
6,887,000,000
SEK
|
—
SEK
|
—
SEK
|
6,474,000,000
SEK
|
6,474,000,000
SEK
|
—
SEK
|
—
SEK
|
6,777,000,000
SEK
|
382,000,000
SEK
|
6,395,000,000
SEK
|
—
SEK
|
6,395,000,000
SEK
|
6,777,000,000
SEK
|
—
SEK
|
| Other comprehensive income [abstract] | ||||||||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] | ||||||||||||||||||
| Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans |
—
SEK
|
731,000,000
SEK
|
—
SEK
|
—
SEK
|
731,000,000
SEK
|
—
SEK
|
—
SEK
|
731,000,000
SEK
|
731,000,000
SEK
|
—
SEK
|
—
SEK
|
297,000,000
SEK
|
—
SEK
|
297,000,000
SEK
|
—
SEK
|
297,000,000
SEK
|
297,000,000
SEK
|
—
SEK
|
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract] | ||||||||||||||||||
| Income tax relating to remeasurements of defined benefit plans included in other comprehensive income | — |
150,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
83,000,000
SEK
|
— | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] | ||||||||||||||||||
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — |
—
SEK
|
— | — | — | — | — | — | — | — | — |
—
SEK
|
— | — | — | — | — | — |
| Comprehensive income | — |
10,462,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
3,345,000,000
SEK
|
— | — | — | — | — | — |
| Comprehensive income attributable to [abstract] | ||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — |
9,938,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
3,082,000,000
SEK
|
— | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — |
524,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
263,000,000
SEK
|
— | — | — | — | — | — |