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ACCOUNTS RECEIVABLE AND OTHER CURRENT ASSETS (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Accounts receivable    
Amounts due from concentrate sales $ 110 $ 110
Receivable from Dominican Republic government 1 30
Other receivables 128 109
Accounts receivable 239 249
Other current assets    
Derivative assets (note 25f) 2 1
Goods and services taxes recoverable 167 239
Prepaid expenses 68 48
Other 84 18
Other current assets 321 306
Tanzania    
Disclosure of Trade Receivable and Other Current Assets [Line Items]    
VAT and fuel tax recoverables 32 124
Argentina    
Disclosure of Trade Receivable and Other Current Assets [Line Items]    
VAT and fuel tax recoverables 49 52
Chile    
Disclosure of Trade Receivable and Other Current Assets [Line Items]    
VAT and fuel tax recoverables 3 32
Dominican Republic    
Disclosure of Trade Receivable and Other Current Assets [Line Items]    
VAT and fuel tax recoverables 19 10
Peru    
Disclosure of Trade Receivable and Other Current Assets [Line Items]    
VAT and fuel tax recoverables $ 8 $ 6