Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||||
| Property, plant and equipment [abstract] | ||||||
| Property, plant and equipment |
17 449.8
USD
|
17 449.8
USD
|
15 886.7
USD
|
15 886.7
USD
|
— | — |
| Intangible assets and goodwill [abstract] | ||||||
| Intangible assets other than goodwill [abstract] | ||||||
| Intangible exploration and evaluation assets |
325,400,000
USD
|
325,400,000
USD
|
251,700,000
USD
|
251,700,000
USD
|
— | — |
| Other intangible assets |
2 123.4
USD
|
2 123.4
USD
|
2 344.4
USD
|
2 344.4
USD
|
— | — |
| Goodwill |
13 142.8
USD
|
13 142.8
USD
|
13 935.0
USD
|
13 935.0
USD
|
— | — |
| Trade and other non-current receivables [abstract] | ||||||
| Trade and other non-current receivables |
69,100,000
USD
|
77,500,000
USD
|
169,500,000
USD
|
175,600,000
USD
|
— | — |
| Miscellaneous non-current assets [abstract] | ||||||
| Non-current derivative financial assets |
38,100,000
USD
|
38,100,000
USD
|
2,900,000
USD
|
2,900,000
USD
|
— | — |
| Other non-current assets |
102,900,000
USD
|
102,900,000
USD
|
104,500,000
USD
|
104,500,000
USD
|
— | — |
| Trade and other current receivables [abstract] | ||||||
| Current trade receivables |
658,800,000
USD
|
658,900,000
USD
|
950,900,000
USD
|
950,900,000
USD
|
— | — |
| Other current receivables |
742,200,000
USD
|
742,100,000
USD
|
686,200,000
USD
|
686,700,000
USD
|
— | — |
| Classes of current inventories [abstract] | ||||||
| Current inventories |
202,300,000
USD
|
202,300,000
USD
|
209,500,000
USD
|
209,500,000
USD
|
— | — |
| Classes of current inventories, alternative [abstract] | ||||||
| Cash and cash equivalents [abstract] | ||||||
| Cash [abstract] | ||||||
| Balances with banks |
3 366.9
USD
|
3 366.9
USD
|
2 756.0
USD
|
2 756.0
USD
|
— | — |
| Cash and cash equivalents |
3 388.4
USD
|
3 388.4
USD
|
2 756.0
USD
|
2 756.0
USD
|
1 970.9
USD
|
1 970.9
USD
|
| Miscellaneous current assets [abstract] | ||||||
| Current derivative financial assets |
148,100,000
USD
|
148,100,000
USD
|
153,100,000
USD
|
153,100,000
USD
|
— | — |
| Miscellaneous assets [abstract] | ||||||
| Restricted cash and cash equivalents |
21,500,000
USD
|
21,500,000
USD
|
-
USD
|
-
USD
|
— | — |
| Classes of other provisions [abstract] | ||||||
| Provision for decommissioning, restoration and rehabilitation costs [abstract] | ||||||
| Non-current provision for decommissioning, restoration and rehabilitation costs |
4 304.1
USD
|
4 304.1
USD
|
4 050.4
USD
|
4 050.4
USD
|
— | — |
| Current provision for decommissioning, restoration and rehabilitation costs |
250,600,000
USD
|
250,600,000
USD
|
115,200,000
USD
|
115,200,000
USD
|
— | — |
| Non-current portion of non-current borrowings, by type [abstract] | ||||||
| Non-current portion of non-current bonds issued |
5 798.2
USD
|
5 798.2
USD
|
5 279.2
USD
|
5 279.2
USD
|
— | — |
| Trade and other current payables [abstract] | ||||||
| Current trade payables |
291,000,000
USD
|
291,100,000
USD
|
133,900,000
USD
|
133,900,000
USD
|
— | — |
| Current payables on social security and taxes other than income tax |
38,800,000
USD
|
38,800,000
USD
|
36,600,000
USD
|
36,600,000
USD
|
— | — |
| Miscellaneous non-current liabilities [abstract] | ||||||
| Non-current derivative financial liabilities |
500,000
USD
|
500,000
USD
|
17,000,000
USD
|
17,000,000
USD
|
— | — |
| Other non-current liabilities |
1,000,000
USD
|
1,000,000
USD
|
82,300,000
USD
|
82,300,000
USD
|
— | — |
| Miscellaneous current liabilities [abstract] | ||||||
| Current derivative financial liabilities |
32,800,000
USD
|
32,800,000
USD
|
34,900,000
USD
|
34,900,000
USD
|
— | — |
| Other current liabilities |
1 071.0
USD
|
1 070.2
USD
|
807,100,000
USD
|
806,900,000
USD
|
— | — |
| Issued capital [abstract] | ||||||
| Issued capital |
84,300,000
USD
|
84,300,000
USD
|
84,300,000
USD
|
84,300,000
USD
|
— | — |
| Net assets (liabilities) [abstract] | ||||||
| Assets |
39 046.5
USD
|
39 055.0
USD
|
37 561.8
USD
|
37 568.2
USD
|
— | — |
| Liabilities |
26 684.3
USD
|
26 683.7
USD
|
25 134.3
USD
|
25 134.1
USD
|
— | — |
| Net current assets (liabilities) [abstract] | ||||||
| Current assets |
5 139.7
USD
|
5 139.8
USD
|
4 755.8
USD
|
4 756.2
USD
|
— | — |
| Current liabilities |
5 432.9
USD
|
5 432.2
USD
|
6 248.2
USD
|
6 248.0
USD
|
— | — |
| Assets less current liabilities [abstract] |