Statement Of Comprehensive Income [Abstract]
| Concept |
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 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||
| Profit (loss) |
5,437,000,000
SEK
|
— | — | — | — | — | — |
5,764,000,000
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 |
165,000,000
SEK
|
— |
165,000,000
SEK
|
165,000,000
SEK
|
— |
105,000,000
SEK
|
— |
105,000,000
SEK
|
105,000,000
SEK
|
— |
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||||
| Hedges of net investment in foreign operations [abstract] | ||||||||||
| Other comprehensive income, before tax, hedges of net investments in foreign operations |
18,000,000
SEK
|
— | — |
18,000,000
SEK
|
18,000,000
SEK
|
507,000,000
SEK
|
507,000,000
SEK
|
507,000,000
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 |
34,000,000
SEK
|
— |
34,000,000
SEK
|
34,000,000
SEK
|
— |
22,000,000
SEK
|
— |
22,000,000
SEK
|
22,000,000
SEK
|
— |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] | ||||||||||
| Income tax relating to hedges of net investments in foreign operations included in other comprehensive income |
4,000,000
SEK
|
— | — |
4,000,000
SEK
|
4,000,000
SEK
|
104,000,000
SEK
|
104,000,000
SEK
|
104,000,000
SEK
|
— | — |
| Other comprehensive income |
445,000,000
SEK
|
— | — | — | — | — | — |
3,381,000,000
SEK
|
— | — |
| Comprehensive income |
4,992,000,000
SEK
|
2,000,000
SEK
|
5,566,000,000
SEK
|
4,990,000,000
SEK
|
576,000,000
SEK
|
9,144,000,000
SEK
|
3,298,000,000
SEK
|
9,145,000,000
SEK
|
5,846,000,000
SEK
|
1,000,000
SEK
|
| Comprehensive income attributable to [abstract] | ||||||||||
| Comprehensive income, attributable to owners of parent |
4,990,000,000
SEK
|
— | — | — | — | — | — |
9,144,000,000
SEK
|
— | — |
| Comprehensive income, attributable to non-controlling interests |
2,000,000
SEK
|
— | — | — | — | — | — |
1,000,000
SEK
|
— | — |