Statement Of Cash Flows [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||
| Profit (loss) |
1,000,000
SEK
|
— |
10 901
SEK
|
10 900
SEK
|
9 171
SEK
|
— |
9 172
SEK
|
1,000,000
SEK
|
— |
| Adjustments to reconcile profit (loss) [abstract] | |||||||||
| Adjustments for depreciation and amortisation expense | — | — |
3 841
SEK
|
— | — | — |
3 776
SEK
|
— | — |
| Other adjustments for non-cash items | — | — |
178,000,000
SEK
|
— | — | — |
95,000,000
SEK
|
— | — |
| Cash flows from (used in) operations | — | — |
17 638
SEK
|
— | — | — |
14 850
SEK
|
— | — |
| Interest paid, classified as operating activities | — | — |
564,000,000
SEK
|
— | — | — |
699,000,000
SEK
|
— | — |
| Interest received, classified as operating activities | — | — |
5,000,000
SEK
|
— | — | — |
5,000,000
SEK
|
— | — |
| Cash flows from (used in) operating activities | — | — |
12 456
SEK
|
— | — | — |
13 658
SEK
|
— | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — | — |
699,000,000
SEK
|
— | — | — |
1 170
SEK
|
— | — |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — | — |
2 121
SEK
|
— | — | — |
6 238
SEK
|
— | — |
| Other inflows (outflows) of cash, classified as investing activities | — | — |
43,000,000
SEK
|
— | — | — |
0
SEK
|
— | — |
| Cash flows from (used in) investing activities | — | — |
3 094
SEK
|
— | — | — |
6 741
SEK
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||||||
| Payments from changes in ownership interests in subsidiaries that do not result in loss of control | — | — |
–
SEK
|
— | — | — |
16,000,000
SEK
|
— | — |
| Payments to acquire or redeem entity's shares | — | — |
54,000,000
SEK
|
— | — | — |
22,000,000
SEK
|
— | — |
| Payments of lease liabilities, classified as financing activities | — | — |
1 242
SEK
|
— | — | — |
1 275
SEK
|
— | — |
| Dividends paid, classified as financing activities | — | — |
4 333
SEK
|
— | — | — |
4 277
SEK
|
— | — |
| Other inflows (outflows) of cash, classified as financing activities | — | — |
282,000,000
SEK
|
— | — | — |
1 522
SEK
|
— | — |
| Cash flows from (used in) financing activities | — | — |
7 813
SEK
|
— | — | — |
4 558
SEK
|
— | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — |
1 549
SEK
|
— | — | — |
2 359
SEK
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — |
20,000,000
SEK
|
— | — | — |
45,000,000
SEK
|
— | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — | — |
1 549
SEK
|
— | — | — |
2 359
SEK
|
— | — |
| Cash and cash equivalents | — |
4 325
SEK
|
— | — | — |
2 756
SEK
|
— | — |
442,000,000
SEK
|