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FINANCIAL INSTRUMENTS - Debt Narrative (Details) - USD ($)
 1 Months Ended 12 Months Ended
May 02, 2013
Oct. 16, 2009
Mar. 19, 2009
Jan. 31, 2013
Jan. 31, 2012
Sep. 30, 2008
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2013
Apr. 03, 2012
Jun. 30, 2011
Apr. 30, 2010
Disclosure of detailed information about borrowings [line items]                            
Borrowings             $ 5,738,000,000 $ 6,423,000,000 $ 7,931,000,000          
Repayments             687,000,000 1,533,000,000            
BNAF Notes Due 2014                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent)                         1.75%  
Repayments                     $ 700,000,000      
Barrick Notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent)                         2.90%  
Repayments               229,000,000     871,000,000      
BNAF Notes Due 2021                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent)                         4.40%  
Borrowings             0 629,000,000            
Repayments             0 721,000,000            
BNAF Notes Due 2041                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent)                         5.70%  
Borrowings             850,000,000 850,000,000            
3.85%/5.25% Notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings             1,079,000,000 1,079,000,000 1,078,000,000          
Repayments             $ 0 $ 0            
Effective rate (as percent)             4.87% 4.87%            
3.85% Notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent)                       3.85%    
Repayments                   $ 913,000,000        
5.25% Notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent)                       5.25%    
Other fixed rate notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings             $ 1,326,000,000 $ 1,326,000,000 1,607,000,000          
Repayments             $ 0 $ 279,000,000            
Effective rate (as percent)             6.16% 6.38%            
BPADF Notes Due 2039                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent)   5.95%                        
Borrowings             $ 850,000,000 $ 850,000,000            
Term of borrowings   30 years                        
BPDAF Notes Due 2019                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent)   4.95%                        
Borrowings             248,000,000 248,000,000            
Repayments               152,000,000            
Term of borrowings   10 years                        
6.95% notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent)     6.95%                      
Repayments             $ 279,000,000 196,000,000   275,000,000        
Term of borrowings     10 years                      
6.125% Notes Due 2013                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent)           6.125%                
Term of borrowings           5 years                
6.8 Percent Notes Due 2019                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent)           6.80%                
Term of borrowings           10 years                
7.50% Notes Due 2038                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent)           7.50%                
Term of borrowings           30 years                
Pueblo Viejo Project financing                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings               0 400,000,000          
Repayments               $ 423,000,000            
Effective rate (as percent)             0.00% 7.04%            
Credit Facility Due 2024                            
Disclosure of detailed information about borrowings [line items]                            
Basis spread (as percent)         1.25%                  
Commitment fee (as percent)         0.175%                  
Credit Facility Due 2021                            
Disclosure of detailed information about borrowings [line items]                            
Repayments $ 2,000,000,000                          
4.10%/5.75% notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings             $ 842,000,000 $ 842,000,000 1,569,000,000          
Repayments             $ 0 $ (731,000,000)            
Effective rate (as percent)             5.79% 5.12%            
2.5 Percent Notes Due 2018                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent) 2.50%                          
Repayments             $ 123,000,000     129,000,000 398,000,000      
4.10% Notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent) 4.10%                          
Repayments             731,000,000     769,000,000        
5.75% Notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings, interest rate (as percent) 5.75%                          
Acacia Credit Facility                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings             43,000,000 $ 71,000,000 99,000,000          
Repayments             $ 28,000,000 $ 28,000,000 $ 29,000,000 $ 14,000,000        
Term of borrowings       7 years                    
Repayment holiday period       2 years                    
Effective rate (as percent)       3.60%     3.59% 3.59%            
Gross amount                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings             $ 5,747,000,000              
Gross amount | BNAF Notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings                         $ 4,000,000,000  
Gross amount | BNAF Notes Due 2014                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings                         700,000,000  
Gross amount | Barrick Notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings                         1,100,000,000  
Gross amount | BNAF Notes Due 2021                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings                         1,350,000,000.00  
Gross amount | BNAF Notes Due 2041                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings                         $ 850,000,000  
Gross amount | 3.85%/5.25% Notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings                       $ 2,000,000,000    
Gross amount | 3.85% Notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings             337,000,000         1,250,000,000    
Gross amount | 5.25% Notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings             750,000,000         $ 750,000,000    
Gross amount | Other fixed rate notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings   $ 1,250,000,000                        
Gross amount | BPADF Notes Due 2039                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings   850,000,000                        
Gross amount | BPDAF Notes Due 2019                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings   $ 400,000,000                        
Gross amount | 6.95% notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings     $ 750,000,000                      
Gross amount | LLCs Notes Due 2013, Due 2019 and Due 2038                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings           $ 1,250,000,000                
Gross amount | 6.125% Notes Due 2013                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings           500,000,000                
Repayments                     $ 500,000,000      
Gross amount | 6.8 Percent Notes Due 2019                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings           500,000,000                
Repayments             500,000,000              
Gross amount | 7.50% Notes Due 2038                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings           $ 250,000,000 250,000,000              
Gross amount | Pueblo Viejo Project financing                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings                           $ 1,035,000,000
Gross amount | Credit Facility Due 2024                            
Disclosure of detailed information about borrowings [line items]                            
Credit facility available         $ 3,000,000,000                  
Gross amount | 4.10%/5.75% notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings $ 3,000,000,000                          
Gross amount | 2.5 Percent Notes Due 2018                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings 650,000,000                          
Gross amount | 4.10% Notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings 1,500,000,000                          
Gross amount | 5.75% Notes                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings $ 850,000,000           850,000,000              
Gross amount | Acacia Credit Facility                            
Disclosure of detailed information about borrowings [line items]                            
Borrowings             $ 42,000,000              
Credit facility available       $ 142,000,000                    
Variable rate | Acacia Credit Facility                            
Disclosure of detailed information about borrowings [line items]                            
Basis spread (as percent)       2.50%