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Close-down, restoration and environmental provisions - Summary of provisions, including post-retirement benefits (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of other provisions [Line Items]      
Provisions, beginning balance $ 1,558 $ 1,658  
Adjustment on currency translation (83) 32  
Charged/(credited) to profit:      
– increases to existing and new provisions 199 78  
– unused amounts reversed (12) (26)  
Utilised in year (133) (277)  
Newly consolidated operation 61 0  
Transfers and other movements 21 (9)  
Provisions, ending balance 1,456 1,558 $ 1,658
Balance sheet analysis:      
Current 359 361  
Non-current 1,097 1,197  
Total 1,456 1,558 1,658
Change in closure estimates (non-operating and fully impaired sites) 86 1,272 180
Close down and restoration/ environmental      
Disclosure of other provisions [Line Items]      
Provisions, beginning balance 17,150 15,759  
Adjustment on currency translation (1,128) 241  
Adjustments to mining properties/right-of-use assets:      
- increases to existing and new provisions 851 629  
– change in discount rate (787) (921)  
Charged/(credited) to profit:      
– increases to existing and new provisions 435 1,654  
– change in discount rate (235) (168)  
– unused amounts reversed (88) (195)  
– exchange losses/(gains) on provisions 26 (16)  
– amortisation of discount 843 955  
Utilised in year (1,142) (777)  
Transfers and other movements (255) (11)  
Provisions, ending balance 15,731 17,150 15,759
Balance sheet analysis:      
Current 1,183 1,523  
Non-current 14,548 15,627  
Total 15,731 17,150 $ 15,759
Change in closure estimates (non-operating and fully impaired sites)   873  
Close down and restoration/ environmental | Diavik Diamond Mines (2012) Inc.      
Balance sheet analysis:      
Provisions relating to insurance recoveries and other financial assets held $ 350 $ 366