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 |
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 |
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 |
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 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||
| Profit (loss) |
—
SEK
|
1 631
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
12 546
SEK
|
14 177
SEK
|
12 546
SEK
|
5 834
SEK
|
—
SEK
|
7 788
SEK
|
—
SEK
|
1 954
SEK
|
—
SEK
|
5 834
SEK
|
—
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
|
—
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
3 123
SEK
|
3 123
SEK
|
3 123
SEK
|
992,000,000
SEK
|
—
SEK
|
992,000,000
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
992,000,000
SEK
|
—
SEK
|
—
SEK
|
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||||||||||||
| Exchange differences on translation [abstract] | ||||||||||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations |
—
SEK
|
1 132
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
3 243
SEK
|
3 243
SEK
|
4 375
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
3 401
SEK
|
2 691
SEK
|
710,000,000
SEK
|
—
SEK
|
2 691
SEK
|
—
SEK
|
—
SEK
|
| Cash flow hedges [abstract] | ||||||||||||||||||
| Gains (losses) on cash flow hedges, before tax |
—
SEK
|
162,000,000
SEK
|
—
SEK
|
2 479
SEK
|
—
SEK
|
—
SEK
|
2 479
SEK
|
2 641
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
2 862
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
2 862
SEK
|
2 862
SEK
|
—
SEK
|
| Reclassification adjustments on cash flow hedges, before tax |
—
SEK
|
—
SEK
|
—
SEK
|
326,000,000
SEK
|
—
SEK
|
—
SEK
|
326,000,000
SEK
|
326,000,000
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
3 156
SEK
|
—
SEK
|
1,000,000
SEK
|
—
SEK
|
3 155
SEK
|
3 155
SEK
|
—
SEK
|
| Hedges of net investment in foreign operations [abstract] | ||||||||||||||||||
| Other comprehensive income, before tax, hedges of net investments in foreign operations |
—
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
265,000,000
SEK
|
265,000,000
SEK
|
265,000,000
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
368,000,000
SEK
|
368,000,000
SEK
|
—
SEK
|
—
SEK
|
368,000,000
SEK
|
—
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 components of other comprehensive income that will not be reclassified to profit or loss | — | — | — | — | — | — | — |
669,000,000
SEK
|
— | — | — |
212,000,000
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 | — | — | — | — | — | — | — |
526,000,000
SEK
|
— | — | — |
1 318
SEK
|
— | — | — | — | — | — |
| Other comprehensive income |
—
SEK
|
1 001
SEK
|
—
SEK
|
1 712
SEK
|
—
SEK
|
3 032
SEK
|
3 774
SEK
|
4 775
SEK
|
2 454
SEK
|
780,000,000
SEK
|
—
SEK
|
887,000,000
SEK
|
2 402
SEK
|
709,000,000
SEK
|
—
SEK
|
1 596
SEK
|
4 778
SEK
|
—
SEK
|
| Comprehensive income |
—
SEK
|
2 632
SEK
|
—
SEK
|
1 712
SEK
|
—
SEK
|
3 032
SEK
|
16 320
SEK
|
18 952
SEK
|
15 000
SEK
|
5 054
SEK
|
—
SEK
|
8 675
SEK
|
2 402
SEK
|
1 245
SEK
|
—
SEK
|
7 430
SEK
|
4 778
SEK
|
—
SEK
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — | — |
16 320
SEK
|
— | — | — |
7 430
SEK
|
— | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — | — |
2 632
SEK
|
— | — | — |
1 245
SEK
|
— | — | — | — | — | — |