Statement Of Comprehensive Income [Abstract]
| Concept |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2020-05-01 to 2021-04-30 |
2020-05-01 to 2021-04-30 |
2020-05-01 to 2021-04-30 |
2020-05-01 to 2021-04-30 |
|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||
| Profit (loss) |
5,439,000,000
SEK
|
— |
5,443,000,000
SEK
|
4,000,000
SEK
|
— |
4,106,000,000
SEK
|
4,062,000,000
SEK
|
44,000,000
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 | — | — |
71,000,000
SEK
|
— | — |
125,000,000
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 | — | — |
11,000,000
SEK
|
— | — |
29,000,000
SEK
|
— | — |
| Other comprehensive income |
60,000,000
SEK
|
1,191,000,000
SEK
|
1,251,000,000
SEK
|
— |
1,742,000,000
SEK
|
1,646,000,000
SEK
|
96,000,000
SEK
|
— |
| Comprehensive income | — | — |
6,694,000,000
SEK
|
— | — |
2,460,000,000
SEK
|
— | — |
| Comprehensive income attributable to [abstract] | ||||||||
| Comprehensive income, attributable to owners of parent | — | — |
6,690,000,000
SEK
|
— | — |
2,416,000,000
SEK
|
— | — |
| Comprehensive income, attributable to non-controlling interests | — | — |
4,000,000
SEK
|
— | — |
44,000,000
SEK
|
— | — |