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Mining and Income Taxation - Summary of Domestic and Foreign Current Tax Rates (Parenthetical) (Detail)
 12 Months Ended
Mar. 17, 2016
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of Domestic and Foreign Current Tax Rate [Line Items]        
Corporate tax rate   29.00% 30.00% 30.00%
Mining Tax [member]        
Disclosure of Domestic and Foreign Current Tax Rate [Line Items]        
Effective mining tax rate for Gold Fields Operations Limited, GFI Joint Venture Holdings (Proprietary) Limited and owners of South Deep Mine   29.00% 30.00% 30.00%
Top of range [member] | Ghana Tax [member]        
Disclosure of Domestic and Foreign Current Tax Rate [Line Items]        
Corporate tax rate 35.00%      
Bottom of range [member] | Ghana Tax [member]        
Disclosure of Domestic and Foreign Current Tax Rate [Line Items]        
Corporate tax rate 32.50%