v3.26.1
FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Disclosure of fair value measurement of assets [abstract]    
Assets $ 52,349 $ 51,656 [1]
Recurring fair value measurement    
Disclosure of fair value measurement of assets [abstract]    
Assets (liabilities) 705  
Financial assets 1,361 1,311
Financial liabilities 5,814 6,159
Recurring fair value measurement | Debt    
Disclosure of fair value measurement of assets [abstract]    
Financial liabilities 4,878 4,970
Recurring fair value measurement | Derivatives    
Disclosure of fair value measurement of assets [abstract]    
Financial liabilities 176 386
Recurring fair value measurement | Other Liabilities    
Disclosure of fair value measurement of assets [abstract]    
Financial liabilities 760 803
Recurring fair value measurement | Other assets    
Disclosure of fair value measurement of assets [abstract]    
Financial assets 980 940
Recurring fair value measurement | Other investments    
Disclosure of fair value measurement of assets [abstract]    
Assets 37  
Financial assets 37 131
Recurring fair value measurement | Contingent consideration [member]    
Disclosure of fair value measurement of assets [abstract]    
Assets 344  
Financial assets 344 240
Recurring fair value measurement | Receivables from provisional copper and gold sales [Member]    
Disclosure of fair value measurement of assets [abstract]    
Assets 325  
Recurring fair value measurement | Receivable from NOVAGOLD    
Disclosure of fair value measurement of assets [abstract]    
Assets 175  
Carrying amount    
Disclosure of fair value measurement of assets [abstract]    
Financial assets 1,361 1,311
Financial liabilities 5,618 5,892
Carrying amount | Debt    
Disclosure of fair value measurement of assets [abstract]    
Financial liabilities 4,682 4,703
Carrying amount | Derivatives    
Disclosure of fair value measurement of assets [abstract]    
Financial liabilities 176 386
Carrying amount | Other Liabilities    
Disclosure of fair value measurement of assets [abstract]    
Financial liabilities 760 803
Carrying amount | Other assets    
Disclosure of fair value measurement of assets [abstract]    
Financial assets 980 940
Carrying amount | Other investments    
Disclosure of fair value measurement of assets [abstract]    
Financial assets 37 131
Carrying amount | Contingent consideration [member]    
Disclosure of fair value measurement of assets [abstract]    
Financial assets 344 $ 240
Level 1 of fair value hierarchy [member] | Recurring fair value measurement    
Disclosure of fair value measurement of assets [abstract]    
Assets (liabilities) 37  
Level 1 of fair value hierarchy [member] | Recurring fair value measurement | Other investments    
Disclosure of fair value measurement of assets [abstract]    
Assets 37  
Level 1 of fair value hierarchy [member] | Recurring fair value measurement | Contingent consideration [member]    
Disclosure of fair value measurement of assets [abstract]    
Assets 0  
Level 1 of fair value hierarchy [member] | Recurring fair value measurement | Receivables from provisional copper and gold sales [Member]    
Disclosure of fair value measurement of assets [abstract]    
Assets 0  
Level 1 of fair value hierarchy [member] | Recurring fair value measurement | Receivable from NOVAGOLD    
Disclosure of fair value measurement of assets [abstract]    
Assets 0  
Significant other observable inputs (Level 2) | Recurring fair value measurement    
Disclosure of fair value measurement of assets [abstract]    
Assets (liabilities) 149  
Significant other observable inputs (Level 2) | Recurring fair value measurement | Other investments    
Disclosure of fair value measurement of assets [abstract]    
Assets 0  
Significant other observable inputs (Level 2) | Recurring fair value measurement | Contingent consideration [member]    
Disclosure of fair value measurement of assets [abstract]    
Assets 0  
Significant other observable inputs (Level 2) | Recurring fair value measurement | Receivables from provisional copper and gold sales [Member]    
Disclosure of fair value measurement of assets [abstract]    
Assets 325  
Significant other observable inputs (Level 2) | Recurring fair value measurement | Receivable from NOVAGOLD    
Disclosure of fair value measurement of assets [abstract]    
Assets 0  
Significant Unobservable Inputs (Level 3) | Recurring fair value measurement    
Disclosure of fair value measurement of assets [abstract]    
Assets (liabilities) 519  
Significant Unobservable Inputs (Level 3) | Recurring fair value measurement | Other investments    
Disclosure of fair value measurement of assets [abstract]    
Assets 0  
Significant Unobservable Inputs (Level 3) | Recurring fair value measurement | Contingent consideration [member]    
Disclosure of fair value measurement of assets [abstract]    
Assets 344  
Significant Unobservable Inputs (Level 3) | Recurring fair value measurement | Receivables from provisional copper and gold sales [Member]    
Disclosure of fair value measurement of assets [abstract]    
Assets 0  
Significant Unobservable Inputs (Level 3) | Recurring fair value measurement | Receivable from NOVAGOLD    
Disclosure of fair value measurement of assets [abstract]    
Assets $ 175  
[1] 2025 figures have been revised to reflect an update to the provisional purchase price allocation relating to Loulo-Gounkoto.  Refer to note 4 for further details.