Statement Of Cash Flows [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||
| Cash flows from (used in) operating activities [abstract] | |||||||
| Interest paid, classified as operating activities |
55,000,000
SEK
|
— | — |
74,000,000
SEK
|
— | — | — |
| Interest received, classified as operating activities |
8,000,000
SEK
|
— | — |
11,000,000
SEK
|
— | — | — |
| Cash flows from (used in) operating activities |
216,000,000
SEK
|
— | — |
2,439,000,000
SEK
|
— | — | — |
| Cash flows from (used in) investing activities [abstract] | |||||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities |
921,000,000
SEK
|
— | — | — | — | — | — |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities |
1,125,000,000
SEK
|
— | — |
382,000,000
SEK
|
— | — | — |
| Purchase of property, plant and equipment, classified as investing activities |
152,000,000
SEK
|
— | — |
164,000,000
SEK
|
— | — | — |
| Purchase of intangible assets, classified as investing activities |
556,000,000
SEK
|
— | — |
471,000,000
SEK
|
— | — | — |
| Cash flows from (used in) investing activities |
912,000,000
SEK
|
— | — |
1,017,000,000
SEK
|
— | — | — |
| Cash flows from (used in) financing activities [abstract] | |||||||
| Proceeds from issuing shares |
209,000,000
SEK
|
— | — | — | — | — | — |
| Proceeds from borrowings, classified as financing activities |
1,500,000,000
SEK
|
— | — | — | — | — | — |
| Repayments of borrowings, classified as financing activities |
850,000,000
SEK
|
— | — |
1,350,000,000
SEK
|
— | — | — |
| Other inflows (outflows) of cash, classified as financing activities |
204,000,000
SEK
|
— | — |
203,000,000
SEK
|
— | — | — |
| Cash flows from (used in) financing activities |
655,000,000
SEK
|
— | — |
1,553,000,000
SEK
|
— | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||
| Effect of exchange rate changes on cash and cash equivalents |
126,000,000
SEK
|
— | — |
148,000,000
SEK
|
— | — | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes |
41,000,000
SEK
|
— | — |
130,000,000
SEK
|
— | — | — |
| Cash and cash equivalents | — |
1,791,000,000
SEK
|
1,791,000,000
SEK
|
— |
1,706,000,000
SEK
|
1,706,000,000
SEK
|
1,985,000,000
SEK
|