Statement Of Cash Flows [Abstract]
| Concept |
As at 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 |
As at 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 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||||
| Profit (loss) | — |
–
SEK
|
–
SEK
|
935,000,000.0
SEK
|
–
SEK
|
935,000,000.0
SEK
|
— |
–
SEK
|
–
SEK
|
–
SEK
|
399,000,000.0
SEK
|
399,000,000.0
SEK
|
— |
| Adjustments to reconcile profit (loss) [abstract] | |||||||||||||
| Adjustments for depreciation and amortisation expense | — | — | — |
1,056,000,000.0
SEK
|
— | — | — | — | — | — |
960,000,000.0
SEK
|
— | — |
| Adjustments for unrealised foreign exchange losses (gains) | — | — | — |
1,000,000.0
SEK
|
— | — | — | — | — | — |
5,000,000.0
SEK
|
— | — |
| Interest paid, classified as operating activities | — | — | — |
473,000,000.0
SEK
|
— | — | — | — | — | — |
412,000,000.0
SEK
|
— | — |
| Interest received, classified as operating activities | — | — | — |
2,820,000,000.0
SEK
|
— | — | — | — | — | — |
2,548,000,000.0
SEK
|
— | — |
| Income taxes paid (refund), classified as operating activities | — | — | — |
–
SEK
|
— | — | — | — | — | — |
–
SEK
|
— | — |
| Cash flows from (used in) operating activities | — | — | — |
9,233,000,000.0
SEK
|
— | — | — | — | — | — |
11,000,000.0
SEK
|
— | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||||||
| Purchase of property, plant and equipment, classified as investing activities | — | — | — |
28,000,000.0
SEK
|
— | — | — | — | — | — |
75,000,000.0
SEK
|
— | — |
| Purchase of intangible assets, classified as investing activities | — | — | — |
889,000,000.0
SEK
|
— | — | — | — | — | — |
828,000,000.0
SEK
|
— | — |
| Cash flows from (used in) investing activities | — | — | — |
916,000,000.0
SEK
|
— | — | — | — | — | — |
902,000,000.0
SEK
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||||||||||
| Proceeds from issuing other equity instruments | — | — | — |
198,000,000
SEK
|
— | — | — | — | — | — |
–
SEK
|
— | — |
| Payments of lease liabilities, classified as financing activities | — | — | — |
82,000,000.0
SEK
|
— | — | — | — | — | — |
82,000,000.0
SEK
|
— | — |
| Cash flows from (used in) financing activities | — | — | — |
116,000,000.0
SEK
|
— | — | — | — | — | — |
82,000,000.0
SEK
|
— | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — | — |
8,432,000,000.0
SEK
|
— | — | — | — | — | — |
973,000,000.0
SEK
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — |
–
SEK
|
— | — | — | — | — | — |
3,000,000.0
SEK
|
— | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — | — | — |
8,432,000,000.0
SEK
|
— | — | — | — | — | — |
973,000,000.0
SEK
|
— | — |
| Cash and cash equivalents |
9,006,000,000.0
SEK
|
— | — | — | — | — |
575,000,000.0
SEK
|
— | — | — | — | — |
1,551,000,000.0
SEK
|