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] | |||
| Property, plant and equipment |
2, 981.4
USD
|
2, 914.6
USD
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible exploration and evaluation assets |
288,600,000
USD
|
354,600,000
USD
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Other non-current assets |
327 . 1
USD
|
489 . 1
USD
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
26 .8
USD
|
99 .8
USD
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
181,600,000
USD
|
134,800,000
USD
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
636,300,000
USD
|
4 6 9. 1
USD
|
805,400,000
USD
|
| Miscellaneous current assets [abstract] | |||
| Other current assets |
5 6 7. 9
USD
|
704,500,000
USD
|
— |
| Borrowings [abstract] | |||
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
100,000,000
USD
|
100,000,000
USD
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Non-current portion of other non-current borrowings |
2, 372.8
USD
|
2,468. 7
USD
|
— |
| Trade and other non-current payables [abstract] | |||
| Trade and other non-current payables |
780,000,000
USD
|
987 . 1
USD
|
— |
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
750,200,000
USD
|
751. 1
USD
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Non-current derivative financial liabilities |
57 . 9
USD
|
9 9. 0
USD
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Current derivative financial liabilities |
186,300,000
USD
|
80. 9
USD
|
— |
| Issued capital [abstract] | |||
| Issued capital |
215,200,000
USD
|
214,200,000
USD
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
2,241,300,000
USD
|
2,295,200,000
USD
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
238,600,000
USD
|
248,800,000
USD
|
— |
| Miscellaneous equity [abstract] | |||
| Merger reserve |
755,200,000
USD
|
755,200,000
USD
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
5,039 .6
USD
|
5,540 .6
USD
|
— |
| Liabilities |
5,499 . 1
USD
|
6,006. 7
USD
|
— |
| Assets (liabilities) |
45 9 .5
USD
|
466. 1
USD
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
1,428,000,000
USD
|
1, 427 . 9
USD
|
— |
| Current liabilities |
1,321,300,000
USD
|
1,343,600,000
USD
|
— |
| Assets less current liabilities [abstract] |