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] | |||||
| Cash flows from (used in) operating activities | — |
326,600,000
USD
|
— |
366,500,000
USD
|
— |
| Cash flows from (used in) investing activities [abstract] | |||||
| Purchase of property, plant and equipment, classified as investing activities | — |
35,400,000
USD
|
— |
32,800,000
USD
|
— |
| Cash flows from (used in) investing activities | — |
171,900,000
USD
|
— |
254,600,000
USD
|
— |
| Cash flows from (used in) financing activities [abstract] | |||||
| Proceeds from issuing shares | — |
-
USD
|
— |
91,900,000
USD
|
— |
| Repayments of borrowings, classified as financing activities | — |
-
USD
|
— |
240,300,000
USD
|
— |
| Payments of lease liabilities, classified as financing activities | — |
40,300,000
USD
|
— |
43,100,000
USD
|
— |
| Cash flows from (used in) financing activities | — |
141,400,000
USD
|
— |
4,200,000
USD
|
— |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — |
13,300,000
USD
|
— |
116,100,000
USD
|
— |
| Cash and cash equivalents |
170,000,000
USD
|
— |
156,700,000
USD
|
— |
40,600,000
USD
|