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FINANCIAL INSTRUMENTS (Derivative) (Details)
oz in Thousands, lb in Millions, $ in Millions
12 Months Ended
Dec. 31, 2015
USD ($)
oz
lb
$ / lb
$ / oz
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Derivative [Line Items]        
Credit Derivative, Maximum Exposure, Undiscounted | $ $ 45      
Cash and cash equivalents | $ $ 224 $ 464 $ 1,985 $ 3,705
Embedded derivatives in provisional sales contracts, Copper [Member] | Derivatives Not Designated as Hedging Instruments [Member]        
Derivative [Line Items]        
Derivative held (in lbs except gold in oz) | lb 738      
Average contract price 2.22      
Average market price 2.13      
Embedded derivatives in provisional sales contracts, Gold [Member] | Derivatives Not Designated as Hedging Instruments [Member]        
Derivative [Line Items]        
Derivative held (in lbs except gold in oz) | oz 215      
Average contract price | $ / oz 1,071      
Average market price | $ / oz 1,062      
Embedded derivatives in provisional purchase contracts, Copper [Member] | Derivatives Not Designated as Hedging Instruments [Member]        
Derivative [Line Items]        
Derivative held (in lbs except gold in oz) | lb 99      
Average contract price 2.16      
Average market price 2.14      
Copper Forward Contracts [Member] | Derivatives Not Designated as Hedging Instruments [Member]        
Derivative [Line Items]        
Derivative held (in lbs except gold in oz) | lb 6      
Average contract price 2.10      
Maximum [Member] | Embedded derivatives in provisional sales contracts, Copper [Member] | Derivatives Not Designated as Hedging Instruments [Member]        
Derivative [Line Items]        
Maturities Jul. 31, 2016      
Maximum [Member] | Embedded derivatives in provisional sales contracts, Gold [Member] | Derivatives Not Designated as Hedging Instruments [Member]        
Derivative [Line Items]        
Maturities Mar. 31, 2016      
Maximum [Member] | Embedded derivatives in provisional purchase contracts, Copper [Member] | Derivatives Not Designated as Hedging Instruments [Member]        
Derivative [Line Items]        
Maturities Apr. 30, 2016      
Maximum [Member] | Copper Forward Contracts [Member] | Derivatives Not Designated as Hedging Instruments [Member]        
Derivative [Line Items]        
Maturities Feb. 29, 2016      
Fair Value Hedging [Member] | Commodity Contract [Member] | Copper Futures and Swap Contracts [Member] | Derivatives Designated as Hedging Instrument [Member]        
Derivative [Line Items]        
Derivative held (in lbs except gold in oz) | lb 64      
Average contract price 2.29      
Fair Value Hedging [Member] | Maximum [Member] | Commodity Contract [Member] | Copper Futures and Swap Contracts [Member] | Derivatives Designated as Hedging Instrument [Member]        
Derivative [Line Items]        
Maturities Sep. 30, 2017      
Bank Time Deposits [Member]        
Derivative [Line Items]        
Cash and cash equivalents | $ $ 34 $ 48