Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
279,300,000
USD
|
381,000,000
USD
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
18,200,000
USD
|
16,500,000
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 |
58,600,000
USD
|
59,100,000
USD
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
62,300,000
USD
|
60,900,000
USD
|
— |
| Categories of non-current financial assets [abstract] | |||
| Non-current loans and receivables |
–
USD
|
–
USD
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
3,300,000
USD
|
7,200,000
USD
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
32,600,000
USD
|
45,300,000
USD
|
27,100,000
USD
|
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
11,000,000
USD
|
34,600,000
USD
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
29,500,000
USD
|
39,600,000
USD
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other non-current payables [abstract] | |||
| Trade and other non-current payables |
500,000
USD
|
900,000
USD
|
— |
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
14,200,000
USD
|
14,000,000
USD
|
— |
| Issued capital [abstract] | |||
| Issued capital |
33,700,000
USD
|
34,300,000
USD
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
73,600,000
USD
|
15,300,000
USD
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
457,000,000
USD
|
572,900,000
USD
|
— |
| Liabilities |
183,500,000
USD
|
242,300,000
USD
|
— |
| Assets (liabilities) |
273,500,000
USD
|
330,600,000
USD
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
100,400,000
USD
|
115,500,000
USD
|
— |
| Current liabilities |
49,800,000
USD
|
59,100,000
USD
|
— |
| Assets less current liabilities [abstract] |