Statement Of Comprehensive Income [Abstract]
| Concept |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | |||||||||||||||||
| Profit (loss) | — |
14 638
SEK
|
— |
14 165
SEK
|
14 638
SEK
|
474,000,000
SEK
|
— | — |
11 836
SEK
|
11 680
SEK
|
11 836
SEK
|
— |
156,000,000
SEK
|
11 680
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) from investments in equity instruments | — | — | — |
52,000,000
SEK
|
— | — | — | — |
126,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans | — | — | — |
4 759
SEK
|
— | — | — | — |
6 654
SEK
|
— | — | — | — | — | — | — | — |
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | |||||||||||||||||
| Cash flow hedges [abstract] | |||||||||||||||||
| Gains (losses) on cash flow hedges, before tax | — | — | — |
267,000,000
SEK
|
— | — | — | — |
61,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Cost of hedging [abstract] | |||||||||||||||||
| Change in value of foreign currency basis spreads [abstract] | |||||||||||||||||
| Gains (losses) on change in value of foreign currency basis spreads, before tax | — | — | — |
155,000,000
SEK
|
— | — | — | — |
143,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Financial assets measured at fair value through other comprehensive income [abstract] | |||||||||||||||||
| Gains (losses) on financial assets measured at fair value through other comprehensive income, before tax | — | — | — |
7,000,000
SEK
|
— | — | — | — |
40,000,000
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 | — | — | — |
964,000,000
SEK
|
— | — | — | — |
1 360
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 | — | — | — |
317,000,000
SEK
|
— | — | — | — |
52,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
212,000,000
SEK
|
6 631
SEK
|
58,000,000
SEK
|
7 022
SEK
|
3 794
SEK
|
391,000,000
SEK
|
2 559
SEK
|
123,000,000
SEK
|
8 666
SEK
|
5 294
SEK
|
8 666
SEK
|
3 090
SEK
|
25,000,000
SEK
|
8 641
SEK
|
48,000,000
SEK
|
95,000,000
SEK
|
114,000,000
SEK
|
| Comprehensive income |
212,000,000
SEK
|
8 007
SEK
|
58,000,000
SEK
|
7 142
SEK
|
10 844
SEK
|
865,000,000
SEK
|
2 559
SEK
|
123,000,000
SEK
|
20 502
SEK
|
16 974
SEK
|
20 502
SEK
|
3 090
SEK
|
181,000,000
SEK
|
20 321
SEK
|
48,000,000
SEK
|
95,000,000
SEK
|
114,000,000
SEK
|
| Comprehensive income attributable to [abstract] | |||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — |
8 007
SEK
|
— | — | — | — |
20 321
SEK
|
— | — | — | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — |
865,000,000
SEK
|
— | — | — | — |
181,000,000
SEK
|
— | — | — | — | — | — | — | — |