Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2024-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
8,700,000
USD
|
9,800,000
USD
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
197,000,000
USD
|
181,100,000
USD
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | |||
| Investments in associates reported in separate financial statements |
9,100,000
USD
|
16,200,000
USD
|
— |
| Trade and other receivables [abstract] | |||
| Other receivables |
20,500,000
USD
|
58,400,000
USD
|
— |
| Categories of financial assets [abstract] | |||
| Financial assets |
2,864,900,000
USD
|
2,455,500,000
USD
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
684,300,000
USD
|
756,900,000
USD
|
548,800,000
USD
|
| Miscellaneous assets [abstract] | |||
| Interest receivable |
22,000,000
USD
|
16,700,000
USD
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
447,000,000
USD
|
446,600,000
USD
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other payables [abstract] | |||
| Other payables |
91,900,000
USD
|
80,600,000
USD
|
— |
| Issued capital [abstract] | |||
| Issued capital |
122,000,000
USD
|
122,000,000
USD
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
149,500,000
USD
|
182,400,000
USD
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
4,379,900,000
USD
|
3,901,700,000
USD
|
— |
| Liabilities |
2,886,600,000
USD
|
2,393,800,000
USD
|
— |
| Assets less current liabilities [abstract] |