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
|
1,631,000,000
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
12,546,000,000
SEK
|
14,177,000,000
SEK
|
12,546,000,000
SEK
|
5,834,000,000
SEK
|
—
SEK
|
7,788,000,000
SEK
|
—
SEK
|
1,954,000,000
SEK
|
—
SEK
|
5,834,000,000
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
|
3,123,000,000
SEK
|
3,123,000,000
SEK
|
3,123,000,000
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
|
1,132,000,000
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
3,243,000,000
SEK
|
3,243,000,000
SEK
|
4,375,000,000
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
3,401,000,000
SEK
|
2,691,000,000
SEK
|
710,000,000
SEK
|
—
SEK
|
2,691,000,000
SEK
|
—
SEK
|
—
SEK
|
| Cash flow hedges [abstract] | ||||||||||||||||||
| Gains (losses) on cash flow hedges, before tax |
—
SEK
|
162,000,000
SEK
|
—
SEK
|
2,479,000,000
SEK
|
—
SEK
|
—
SEK
|
2,479,000,000
SEK
|
2,641,000,000
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
2,862,000,000
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
2,862,000,000
SEK
|
2,862,000,000
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
|
3,156,000,000
SEK
|
—
SEK
|
1,000,000
SEK
|
—
SEK
|
3,155,000,000
SEK
|
3,155,000,000
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
|
— | — | — |
1,318,000,000
SEK
|
— | — | — | — | — | — |
| Other comprehensive income |
—
SEK
|
1,001,000,000
SEK
|
—
SEK
|
1,712,000,000
SEK
|
—
SEK
|
3,032,000,000
SEK
|
3,774,000,000
SEK
|
4,775,000,000
SEK
|
2,454,000,000
SEK
|
780,000,000
SEK
|
—
SEK
|
887,000,000
SEK
|
2,402,000,000
SEK
|
709,000,000
SEK
|
—
SEK
|
1,596,000,000
SEK
|
4,778,000,000
SEK
|
—
SEK
|
| Comprehensive income |
—
SEK
|
2,632,000,000
SEK
|
—
SEK
|
1,712,000,000
SEK
|
—
SEK
|
3,032,000,000
SEK
|
16,320,000,000
SEK
|
18,952,000,000
SEK
|
15,000,000,000
SEK
|
5,054,000,000
SEK
|
—
SEK
|
8,675,000,000
SEK
|
2,402,000,000
SEK
|
1,245,000,000
SEK
|
—
SEK
|
7,430,000,000
SEK
|
4,778,000,000
SEK
|
—
SEK
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — | — |
16,320,000,000
SEK
|
— | — | — |
7,430,000,000
SEK
|
— | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — | — |
2,632,000,000
SEK
|
— | — | — |
1,245,000,000
SEK
|
— | — | — | — | — | — |