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 |
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 |
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) |
42,000,000
SEK
|
–
SEK
|
4 759
SEK
|
–
SEK
|
4 759
SEK
|
–
SEK
|
–
SEK
|
42,000,000
SEK
|
–
SEK
|
–
SEK
|
–
SEK
|
4 801
SEK
|
27,000,000
SEK
|
3 580
SEK
|
–
SEK
|
–
SEK
|
–
SEK
|
–
SEK
|
–
SEK
|
27,000,000
SEK
|
3 553
SEK
|
–
SEK
|
3 553
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 | — | — | — | — | — | — | — | — | — | — | — |
567,000,000
SEK
|
— |
432,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||||||||||||||||||
| Cash flow hedges [abstract] | ||||||||||||||||||||||||
| Other comprehensive income, before tax, cash flow hedges | — | — | — | — | — | — | — | — | — | — | — |
434,000,000
SEK
|
— |
744,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Financial assets measured at fair value through other comprehensive income [abstract] | ||||||||||||||||||||||||
| Other comprehensive income, before tax, financial assets measured at fair value through other comprehensive income | — | — | — | — | — | — | — | — | — | — | — |
357,000,000
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 components of other comprehensive income that will not be reclassified to profit or loss | — | — | — | — | — | — | — | — | — | — | — |
141,000,000
SEK
|
— |
87,000,000
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 | — | — | — | — | — | — | — | — | — | — | — |
66,000,000
SEK
|
— |
76,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
21,000,000
SEK
|
347,000,000
SEK
|
2 075
SEK
|
1 639
SEK
|
–
SEK
|
443,000,000
SEK
|
340,000,000
SEK
|
–
SEK
|
–
SEK
|
21,000,000
SEK
|
–
SEK
|
2 096
SEK
|
–
SEK
|
2 256
SEK
|
345,000,000
SEK
|
125,000,000
SEK
|
590,000,000
SEK
|
–
SEK
|
–
SEK
|
11,000,000
SEK
|
2 245
SEK
|
2 365
SEK
|
–
SEK
|
11,000,000
SEK
|
| Comprehensive income |
63,000,000
SEK
|
347,000,000
SEK
|
6 834
SEK
|
1 639
SEK
|
4 759
SEK
|
443,000,000
SEK
|
340,000,000
SEK
|
42,000,000
SEK
|
–
SEK
|
21,000,000
SEK
|
–
SEK
|
6 897
SEK
|
27,000,000
SEK
|
1 324
SEK
|
345,000,000
SEK
|
125,000,000
SEK
|
590,000,000
SEK
|
–
SEK
|
–
SEK
|
16,000,000
SEK
|
1 308
SEK
|
2 365
SEK
|
3 553
SEK
|
11,000,000
SEK
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — | — | — | — | — | — |
6 834
SEK
|
— |
1 308
SEK
|
— | — | — | — | — | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — | — | — | — | — | — |
63,000,000
SEK
|
— |
16,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |