Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
399,800,000
USD
|
435,700,000
USD
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
12,400,000
USD
|
1,500,000
USD
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | |||
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements |
–
USD
|
–
USD
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Other non-current assets |
48,100,000
USD
|
45,900,000
USD
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
28,100,000
USD
|
22,900,000
USD
|
— |
| Categories of non-current financial assets [abstract] | |||
| Non-current loans and receivables |
–
USD
|
–
USD
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
10,700,000
USD
|
17,700,000
USD
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
27,100,000
USD
|
24,600,000
USD
|
58,500,000
USD
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | |||
| Non-current assets or disposal groups classified as held for sale |
62,000,000
USD
|
–
USD
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
47,200,000
USD
|
41,000,000
USD
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
33,300,000
USD
|
12,700,000
USD
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
30,600,000
USD
|
35,600,000
USD
|
— |
| Issued capital [abstract] | |||
| Issued capital |
34,900,000
USD
|
31,900,000
USD
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
39,000,000
USD
|
36,600,000
USD
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
589,700,000
USD
|
549,000,000
USD
|
— |
| Liabilities |
285,300,000
USD
|
255,300,000
USD
|
— |
| Assets (liabilities) |
304,400,000
USD
|
293,700,000
USD
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
129,400,000
USD
|
65,800,000
USD
|
— |
| Current liabilities |
77,800,000
USD
|
55,400,000
USD
|
— |
| Assets less current liabilities [abstract] |