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SEGMENT INFORMATION - Consolidated Statements of Income Information (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jul. 01, 2019
Jun. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Disclosure of operating segments [line items]        
Revenue     $ 9,717 $ 7,243
Depreciation     2,032 1,457
Exploration, evaluation and project expenses     342 383
Other expenses (income)     (3,100) 90
Net income (loss)     4,574 (1,435)
Accretion     75 87
Share of income (loss)     605 110
Cost of sales (excluding depreciation)     6,911 5,220
Pueblo Viejo        
Disclosure of operating segments [line items]        
Revenue, attributable to non-controlling interests     566 535
Cost of sales, attributable to non-controlling interests     286 289
Share of income (loss)     274 237
Loulo Gounkoto        
Disclosure of operating segments [line items]        
Revenue, attributable to non-controlling interests     201 0
Cost of sales, attributable to non-controlling interests     150 0
Share of income (loss)     48 0
Nevada Gold Mines        
Disclosure of operating segments [line items]        
Revenue, attributable to non-controlling interests     1,049 0
Cost of sales, attributable to non-controlling interests     704 0
Share of income (loss)     329 0
Tanzanian Mines [Member]        
Disclosure of operating segments [line items]        
Revenue, attributable to non-controlling interests     169 240
Cost of sales, attributable to non-controlling interests     125 163
Share of income (loss)     31 61
Tongon        
Disclosure of operating segments [line items]        
Revenue, attributable to non-controlling interests     39 0
Cost of sales, attributable to non-controlling interests     41 0
Share of income (loss)     (2) 0
Consolidated total [Member]        
Disclosure of operating segments [line items]        
Revenue     9,717  
Direct mining, royalties and community relations     4,864  
Depreciation     1,991  
Exploration, evaluation and project expenses     77  
Other expenses (income)     85  
Net income (loss)     2,700  
Operating segments        
Disclosure of operating segments [line items]        
Revenue     10,222 7,243
Direct mining, royalties and community relations     5,071 3,753
Depreciation     2,187 1,420
Exploration, evaluation and project expenses     80 72
Other expenses (income)     76 97
Net income (loss)     2,808 1,901
Accretion     53 53
Operating segments | Carlin        
Disclosure of operating segments [line items]        
Revenue     1,862 1,066
Direct mining, royalties and community relations     998 624
Depreciation     312 262
Exploration, evaluation and project expenses     17 19
Other expenses (income)     4 (5)
Net income (loss)     531 166
Operating segments | Cortez1 [Member]        
Disclosure of operating segments [line items]        
Revenue     1,325 1,589
Direct mining, royalties and community relations     511 442
Depreciation     240 386
Exploration, evaluation and project expenses     8 16
Other expenses (income)     16 19
Net income (loss)     550 726
Operating segments | Turquoise Ridge        
Disclosure of operating segments [line items]        
Revenue     688 331
Direct mining, royalties and community relations     285 178
Depreciation     140 28
Exploration, evaluation and project expenses     4 0
Other expenses (income)     0 (1)
Net income (loss)     259 126
Proportion of ownership interest in joint venture 75.00% 75.00%    
Percent of ownership by other parties in joint ventures 25.00% 25.00%    
Operating segments | Pueblo Viejo        
Disclosure of operating segments [line items]        
Revenue     1,409 1,333
Direct mining, royalties and community relations     525 547
Depreciation     196 185
Exploration, evaluation and project expenses     12 21
Other expenses (income)     0 1
Net income (loss)     676 579
Operating segments | Loulo Gounkoto        
Disclosure of operating segments [line items]        
Revenue     1,007 0
Direct mining, royalties and community relations     456 0
Depreciation     295 0
Exploration, evaluation and project expenses     12 0
Other expenses (income)     6 0
Net income (loss)     238 0
Operating segments | Kibali [Member]        
Disclosure of operating segments [line items]        
Revenue     505 0
Direct mining, royalties and community relations     207 0
Depreciation     196 0
Exploration, evaluation and project expenses     3 0
Other expenses (income)     (9) 0
Net income (loss)     108 0
Operating segments | Veladero        
Disclosure of operating segments [line items]        
Revenue     386 366
Direct mining, royalties and community relations     208 189
Depreciation     115 121
Exploration, evaluation and project expenses     3 2
Other expenses (income)     3 1
Net income (loss)     57 53
Operating segments | Porgera        
Disclosure of operating segments [line items]        
Revenue     403 269
Direct mining, royalties and community relations     242 170
Depreciation     42 42
Exploration, evaluation and project expenses     2 0
Other expenses (income)     4 1
Net income (loss)     113 56
Operating segments | North Mara        
Disclosure of operating segments [line items]        
Revenue     462 423
Direct mining, royalties and community relations     213 202
Depreciation     97 62
Exploration, evaluation and project expenses     0 0
Other expenses (income)     6 12
Net income (loss)     146 147
Operating segments | Other        
Disclosure of operating segments [line items]        
Revenue     2,175 1,866
Direct mining, royalties and community relations     1,426 1,401
Depreciation     554 334
Exploration, evaluation and project expenses     19 14
Other expenses (income)     46 69
Net income (loss)     130 48
Reconciling items        
Disclosure of operating segments [line items]        
Exploration, evaluation and project expenses     265 311
Other expenses (income)     (3,132) 46
Cost of sales (excluding depreciation)     56 47
Reconciling items | Kibali [Member]        
Disclosure of operating segments [line items]        
Revenue     (505) 0
Direct mining, royalties and community relations     (207) 0
Depreciation     (196) 0
Exploration, evaluation and project expenses     (3) 0
Other expenses (income)     9 0
Net income (loss)     (108) 0
Reconciling items | Nevada Gold Mines        
Disclosure of operating segments [line items]        
Revenue, attributable to non-controlling interests     0 0
Cost of sales, attributable to non-controlling interests     6 0
Share of income (loss)     1 0
Reconciling items | Tanzanian Mines [Member]        
Disclosure of operating segments [line items]        
Revenue, attributable to non-controlling interests     0 0
Cost of sales, attributable to non-controlling interests     0 1
Share of income (loss)     $ (17) $ 2