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Other provisions (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Disclosure of commitments and contingencies [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)
Transfers and other movements 21 (9)
Provisions, ending balance 1,456 1,558
Balance sheet analysis:    
Current 359 361
Non-current 1,097 1,197
Total 1,456 1,558
Utilised in year 133 277
Other    
Disclosure of commitments and contingencies [Line Items]    
Provisions, beginning balance 1,371 1,298
Adjustment on currency translation (69) 14
Adjustments to mining properties/right-of-use assets:    
- increases to existing and new provisions 17 0
– change in discount rate (2) 0
Charged/(credited) to profit:    
– increases to existing and new provisions 184 214
– change in discount rate (7) (18)
– unused amounts reversed (104) (31)
– exchange gain on provisions 0 (1)
– amortisation of discount 14 22
Utilised in year (94) (104)
Transfers and other movements (203) (23)
Provisions, ending balance 1,107 1,371
Balance sheet analysis:    
Current 792 637
Non-current 315 734
Total 1,107 1,371
Utilised in year 94 $ 104
Other | PAPUA NEW GUINEA    
Charged/(credited) to profit:    
Utilised in year (10)  
Balance sheet analysis:    
Utilised in year $ 10