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 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 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 |
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 | — | — | — |
83,100,000
USD
|
— | — | — | — | — | — | — | — | — |
95,400,000
USD
|
— | — | — | — | — | — | — |
| Right-of-use assets | — | — | — |
33,200,000
USD
|
— | — | — | — | — | — | — | — | — |
35,700,000
USD
|
— | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — |
900,000
USD
|
— | — | — | — | — | — | — | — | — |
1,000,000
USD
|
— | — | — | — | — | — | — |
| Non-current assets | — | — | — |
117,300,000
USD
|
— | — | — | — | — | — | — | — | — |
133,300,000
USD
|
— | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||
| Current inventories | — | — | — |
33,100,000
USD
|
— | — | — | — | — | — | — | — | — |
41,300,000
USD
|
— | — | — | — | — | — | — |
| Trade and other current receivables | — | — | — |
29,600,000
USD
|
— | — | — | — | — | — | — | — | — |
27,500,000
USD
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
110,500,000
USD
|
— | — | — | — | — | — | — | — | — |
134,900,000
USD
|
— | — | — |
29,400,000
USD
|
— | — | — |
| Current assets | — | — | — |
177,600,000
USD
|
— | — | — | — | — | — | — | — | — |
208,200,000
USD
|
— | — | — | — | — | — | — |
| Assets | — | — | — |
294,900,000
USD
|
— | — | — | — | — | — | — | — | — |
341,400,000
USD
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Equity |
3,423,900,000
USD
|
539,000,000
USD
|
41,800,000
USD
|
33,300,000
USD
|
2,918,200,000
USD
|
2,822,700,000
USD
|
53,600,000
USD
|
3,398,200,000
USD
|
2,918,200,000
USD
|
41,800,000
USD
|
53,600,000
USD
|
539,000,000
USD
|
2,822,700,000
USD
|
59,000,000
USD
|
539,000,000
USD
|
41,800,000
USD
|
2,727,000,000
USD
|
800,000
USD
|
3,350,500,000
USD
|
2,812,300,000
USD
|
43,400,000
USD
|
| Liabilities [abstract] | |||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||||||
| Other non-current provisions | — | — | — |
20,200,000
USD
|
— | — | — | — | — | — | — | — | — |
14,700,000
USD
|
— | — | — | — | — | — | — |
| Other non-current non-financial liabilities | — | — | — |
1,600,000
USD
|
— | — | — | — | — | — | — | — | — |
1,600,000
USD
|
— | — | — | — | — | — | — |
| Non-current liabilities | — | — | — |
218,200,000
USD
|
— | — | — | — | — | — | — | — | — |
222,900,000
USD
|
— | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||
| Trade and other current payables | — | — | — |
29,400,000
USD
|
— | — | — | — | — | — | — | — | — |
26,100,000
USD
|
— | — | — | — | — | — | — |
| Current liabilities | — | — | — |
43,500,000
USD
|
— | — | — | — | — | — | — | — | — |
59,600,000
USD
|
— | — | — | — | — | — | — |
| Liabilities | — | — | — |
261,600,000
USD
|
— | — | — | — | — | — | — | — | — |
282,500,000
USD
|
— | — | — | — | — | — | — |
| Equity and liabilities | — | — | — |
294,900,000
USD
|
— | — | — | — | — | — | — | — | — |
341,400,000
USD
|
— | — | — | — | — | — | — |