Statement Of Comprehensive Income [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||
| Profit (loss) |
1,000,000
SEK
|
— |
10 901
SEK
|
10 900
SEK
|
9 171
SEK
|
9 172
SEK
|
1,000,000
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 | — | — |
917,000,000
SEK
|
— | — |
319,000,000
SEK
|
— | — |
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||
| Exchange differences on translation [abstract] | ||||||||
| Gains (losses) on exchange differences on translation of foreign operations, before tax | — | — |
3 468
SEK
|
— | — |
4 560
SEK
|
— | — |
| Reclassification adjustments on exchange differences on translation of foreign operations, before tax | — | — |
–
SEK
|
— | — |
318,000,000
SEK
|
— | — |
| Cash flow hedges [abstract] | ||||||||
| Gains (losses) on cash flow hedges, before tax | — | — |
5,000,000
SEK
|
— | — |
0
SEK
|
— | — |
| Hedges of net investment in foreign operations [abstract] | ||||||||
| Gains (losses) on hedges of net investments in foreign operations, before tax | — | — |
–
SEK
|
— | — |
3,000,000
SEK
|
— | — |
| Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, before tax | — | — |
6,000,000
SEK
|
— | — |
70,000,000
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 | — | — |
211,000,000
SEK
|
— | — |
56,000,000
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 | — | — |
23,000,000
SEK
|
— | — |
16,000,000
SEK
|
— | — |
| Other comprehensive income |
1,000,000
SEK
|
3 444
SEK
|
4 150
SEK
|
705,000,000
SEK
|
262,000,000
SEK
|
5 197
SEK
|
1,000,000
SEK
|
4 934
SEK
|
| Comprehensive income |
1,000,000
SEK
|
3 444
SEK
|
15 050
SEK
|
11 605
SEK
|
8 909
SEK
|
3 975
SEK
|
0
SEK
|
4 934
SEK
|
| Comprehensive income attributable to [abstract] | ||||||||
| Comprehensive income, attributable to owners of parent | — | — |
15 049
SEK
|
— | — |
3 975
SEK
|
— | — |
| Comprehensive income, attributable to non-controlling interests | — | — |
1,000,000
SEK
|
— | — |
0
SEK
|
— | — |