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PROVISIONS - Environmental Rehabilitation (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Disclosure of other provisions [line items]    
Provisions, noncurrent $ 2,904 $ 3,141
Environmental rehabilitation    
Disclosure of other provisions [line items]    
Environmental rehabilitation, beginning balance 3,096 2,246
Environmental rehabilitation, ending balance   3,096
Provisions, noncurrent 2,726 2,944
Discontinued operations | Environmental rehabilitation    
Disclosure of other provisions [line items]    
PERs divested during the year 0 (31)
Other increase (decrease) during period (30) 46
Cash payments (48) (41)
Settlement gains (2) (1)
Accretion 13 12
Continuing operations | Environmental rehabilitation    
Disclosure of other provisions [line items]    
Environmental rehabilitation, beginning balance 3,096  
Other increase (decrease) during period (247) 836
Cash payments (18) (18)
Settlement gains (1) (1)
Accretion 74 48
Environmental rehabilitation, ending balance 2,837 3,096
Current provisions (111) (152)
Provisions, noncurrent $ 2,726 $ 2,944