Statement Of Financial Position [Abstract]
| Concept |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Non-current assets [abstract] | |||||||||||||||
| Property, plant and equipment |
787,400,000
USD
|
— | — | — | — |
898,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Non-current assets |
1,359,800,000
USD
|
— | — | — | — |
1 684.2
USD
|
— | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||
| Cash and cash equivalents |
170,000,000
USD
|
— | — | — | — |
156,700,000
USD
|
— | — | — | — | — | — |
40,600,000
USD
|
— | — |
| Current assets |
433,000,000
USD
|
— | — | — | — |
409,600,000
USD
|
— | — | — | — | — | — | — | — | — |
| Assets |
1,792,800,000
USD
|
— | — | — | — |
2 093.8
USD
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital |
158,900,000
USD
|
— | — | — | — |
154,200,000
USD
|
— | — | — | — | — | — | — | — | — |
| Retained earnings |
840,200,000
USD
|
— | — | — | — |
675,600,000
USD
|
— | — | — | — | — | — | — | — | — |
| Other reserves |
6,700,000
USD
|
— | — | — | — |
11,300,000
USD
|
— | — | — | — | — | — | — | — | — |
| Equity |
245,100,000
USD
|
840,200,000
USD
|
6,700,000
USD
|
933,100,000
USD
|
158,900,000
USD
|
396,400,000
USD
|
154,200,000
USD
|
675,600,000
USD
|
929,100,000
USD
|
11,300,000
USD
|
346,500,000
USD
|
7,400,000
USD
|
637,100,000
USD
|
852,500,000
USD
|
138,500,000
USD
|
| Liabilities [abstract] | |||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||
| Deferred tax liabilities |
100,000
USD
|
— | — | — | — |
100,000
USD
|
— | — | — | — | — | — | — | — | — |
| Non-current liabilities |
1,083,300,000
USD
|
— | — | — | — |
177,900,000
USD
|
— | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||
| Current tax liabilities, current |
16,700,000
USD
|
— | — | — | — |
13,700,000
USD
|
— | — | — | — | — | — | — | — | — |
| Current liabilities |
464,400,000
USD
|
— | — | — | — |
1 519.5
USD
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities |
1,792,800,000
USD
|
— | — | — | — |
2 093.8
USD
|
— | — | — | — | — | — | — | — | — |