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PROPERTY, PLANT AND EQUIPMENT - Mineral Property Costs Not Subject to Depreciation (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment (note 19) $ 24,141 $ 12,826 $ 13,806
MIning property costs not subject to depreciation      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment (note 19) 4,100 2,968 $ 3,071
MIning property costs not subject to depreciation | Norte Abierto Project      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment (note 19) 649 639  
MIning property costs not subject to depreciation | Donlin Gold      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment (note 19) 184 174  
MIning property costs not subject to depreciation | Pascua-Lama      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment (note 19) 754 1,245  
Construction-in-progress      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment (note 19) 1,009 786  
Acquired mineral resources and exploration potential      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment (note 19) $ 1,504 $ 124