Statement Of Cash Flows [Abstract]
| Concept |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 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] | |||||
| Income taxes paid (refund), classified as operating activities | — |
0
USD
|
— |
5,300,000
USD
|
— |
| Cash flows from (used in) operating activities | — |
4,800,000
USD
|
— |
19,100,000
USD
|
— |
| Cash flows from (used in) investing activities [abstract] | |||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — |
179,300,000
USD
|
— | — | — |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — | — | — |
200,000
USD
|
— |
| Other cash payments to acquire equity or debt instruments of other entities, classified as investing activities | — |
100,000
USD
|
— |
100,000
USD
|
— |
| Purchase of intangible assets, classified as investing activities | — |
2,800,000
USD
|
— |
10,300,000
USD
|
— |
| Dividends received, classified as investing activities | — |
30,800,000
USD
|
— |
0
USD
|
— |
| Cash flows from (used in) investing activities | — |
207,100,000
USD
|
— |
12,400,000
USD
|
— |
| Cash flows from (used in) financing activities [abstract] | |||||
| Payments from changes in ownership interests in subsidiaries that do not result in loss of control | — |
132,600,000
USD
|
— |
400,000
USD
|
— |
| Payments of other equity instruments | — |
100,000
USD
|
— |
0
USD
|
— |
| Proceeds from borrowings, classified as financing activities | — |
0
USD
|
— |
15,000,000
USD
|
— |
| Repayments of borrowings, classified as financing activities | — |
35,500,000
USD
|
— |
1,300,000
USD
|
— |
| Payments of lease liabilities, classified as financing activities | — |
1,500,000
USD
|
— |
2,800,000
USD
|
— |
| Cash flows from (used in) financing activities | — |
169,700,000
USD
|
— |
10,500,000
USD
|
— |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||
| Effect of exchange rate changes on cash and cash equivalents | — |
5,100,000
USD
|
— |
3,600,000
USD
|
— |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — |
42,200,000
USD
|
— |
17,200,000
USD
|
— |
| Cash and cash equivalents |
79,000,000
USD
|
— |
41,900,000
USD
|
— |
28,300,000
USD
|