Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Land and buildings [abstract] | |||
| Land and buildings |
31,100,000
USD
|
33,300,000
USD
|
— |
| Construction in progress |
62,400,000
USD
|
12,500,000
USD
|
— |
| Other property, plant and equipment |
2,700,000
USD
|
2,600,000
USD
|
— |
| Property, plant and equipment |
120,900,000
USD
|
83,100,000
USD
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
1,000,000
USD
|
900,000
USD
|
— |
| Trade and other non-current receivables [abstract] | |||
| Other non-current receivables |
100,000
USD
|
0
USD
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
23,200,000
USD
|
29,600,000
USD
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
38,300,000
USD
|
33,100,000
USD
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
105,300,000
USD
|
110,500,000
USD
|
134,900,000
USD
|
| Miscellaneous current assets [abstract] | |||
| Current restricted cash and cash equivalents |
800,000
USD
|
4,400,000
USD
|
— |
| Classes of other provisions [abstract] | |||
| Other provisions [abstract] | |||
| Other non-current provisions |
19,300,000
USD
|
20,200,000
USD
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
4,200,000
USD
|
115,200,000
USD
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
111,000,000
USD
|
11,300,000
USD
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other current payables [abstract] | |||
| Current accruals and current deferred income including current contract liabilities [abstract] | |||
| Current deferred income including current contract liabilities [abstract] | |||
| Current contract liabilities [abstract] | |||
| Current advances received, representing current contract liabilities for performance obligations satisfied at point in time |
100,000
USD
|
200,000
USD
|
— |
| Trade and other current payables |
46,500,000
USD
|
29,400,000
USD
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Non-current net defined benefit liability |
8,600,000
USD
|
13,400,000
USD
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Current derivative financial liabilities |
0
USD
|
0
USD
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
319,900,000
USD
|
294,900,000
USD
|
— |
| Liabilities |
259,500,000
USD
|
261,600,000
USD
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
167,500,000
USD
|
177,600,000
USD
|
— |
| Current liabilities |
160,300,000
USD
|
43,500,000
USD
|
— |
| Assets less current liabilities [abstract] |