XML 70 R132.htm IDEA: XBRL DOCUMENT v3.20.1
FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured on Recurring Basis at Aggregate Fair Value (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Disclosure of fair value measurement of assets [line items]    
Assets $ 44,392 $ 22,631
Liabilities (14,565) (13,246)
Recurring fair value measurement    
Disclosure of fair value measurement of assets [line items]    
Assets (liabilities) 3,641 1,856
Recurring fair value measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Disclosure of fair value measurement of assets [line items]    
Assets (liabilities) 3,572 1,780
Recurring fair value measurement | Significant Other Observable Inputs (Level 2)    
Disclosure of fair value measurement of assets [line items]    
Assets (liabilities) 69 76
Recurring fair value measurement | Significant Unobservable Inputs (Level 3)    
Disclosure of fair value measurement of assets [line items]    
Assets (liabilities) 0 0
Recurring fair value measurement | Derivatives    
Disclosure of fair value measurement of assets [line items]    
Liabilities 1 0
Recurring fair value measurement | Derivatives | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Disclosure of fair value measurement of assets [line items]    
Liabilities 0 0
Recurring fair value measurement | Derivatives | Significant Other Observable Inputs (Level 2)    
Disclosure of fair value measurement of assets [line items]    
Liabilities 1 0
Recurring fair value measurement | Derivatives | Significant Unobservable Inputs (Level 3)    
Disclosure of fair value measurement of assets [line items]    
Liabilities 0 0
Recurring fair value measurement | Cash and equivalents    
Disclosure of fair value measurement of assets [line items]    
Assets 3,314 1,571
Recurring fair value measurement | Cash and equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Disclosure of fair value measurement of assets [line items]    
Assets 3,314 1,571
Recurring fair value measurement | Cash and equivalents | Significant Other Observable Inputs (Level 2)    
Disclosure of fair value measurement of assets [line items]    
Assets 0 0
Recurring fair value measurement | Cash and equivalents | Significant Unobservable Inputs (Level 3)    
Disclosure of fair value measurement of assets [line items]    
Assets 0 0
Recurring fair value measurement | Other investments [Member]    
Disclosure of fair value measurement of assets [line items]    
Assets 258 209
Recurring fair value measurement | Other investments [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Disclosure of fair value measurement of assets [line items]    
Assets 258 209
Recurring fair value measurement | Other investments [Member] | Significant Other Observable Inputs (Level 2)    
Disclosure of fair value measurement of assets [line items]    
Assets 0 0
Recurring fair value measurement | Other investments [Member] | Significant Unobservable Inputs (Level 3)    
Disclosure of fair value measurement of assets [line items]    
Assets 0 0
Recurring fair value measurement | Receivables from provisional copper and gold sales [Member]    
Disclosure of fair value measurement of assets [line items]    
Assets 68 76
Recurring fair value measurement | Receivables from provisional copper and gold sales [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Disclosure of fair value measurement of assets [line items]    
Assets 0 0
Recurring fair value measurement | Receivables from provisional copper and gold sales [Member] | Significant Other Observable Inputs (Level 2)    
Disclosure of fair value measurement of assets [line items]    
Assets 68 76
Recurring fair value measurement | Receivables from provisional copper and gold sales [Member] | Significant Unobservable Inputs (Level 3)    
Disclosure of fair value measurement of assets [line items]    
Assets $ 0 $ 0