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Mining and Income Taxation - Summary of Estimated Available for Set-off Against Future Income Pre Tax (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
South African - Components of Mining and Income Tax [Member]    
Disclosure of Estimated Amount Available for Set Off Against Future Income Pretax [Line Items]    
Gross unredeemed capital expenditure US$ million $ 3,143.5 $ 2,535.6
2016 Gross tax losses US$ million 192.5 182.3
Gross deferred tax asset not recognised US$ million 1,501.6 1,132.6
South African - Components of Mining and Income Tax [Member] | Gold Fields Operations Limited [Member]    
Disclosure of Estimated Amount Available for Set Off Against Future Income Pretax [Line Items]    
Gross unredeemed capital expenditure US$ million 716.4 606.4
2016 Gross tax losses US$ million 192.5 182.3
Gross deferred tax asset not recognised US$ million 0.0 0.0
South African - Components of Mining and Income Tax [Member] | GFI Joint Venture Holdings (Proprietary) Limited [Member]    
Disclosure of Estimated Amount Available for Set Off Against Future Income Pretax [Line Items]    
Gross unredeemed capital expenditure US$ million 2,427.1 1,929.2
2016 Gross tax losses US$ million 0.0 0.0
Gross deferred tax asset not recognised US$ million 1,501.6 1,132.6
International operations [member]    
Disclosure of Estimated Amount Available for Set Off Against Future Income Pretax [Line Items]    
Gross unredeemed capital expenditure US$ million 0.0 88.8
2016 Gross tax losses US$ million 647.3 458.7
Gross deferred tax asset not recognised US$ million 509.4 546.3
International operations [member] | Exploration Entities [Member]    
Disclosure of Estimated Amount Available for Set Off Against Future Income Pretax [Line Items]    
Gross unredeemed capital expenditure US$ million 0.0 0.0
2016 Gross tax losses US$ million 445.9 388.8
Gross deferred tax asset not recognised US$ million 445.9 388.8
International operations [member] | Gold Fields Australia Proprietary Limited [Member]    
Disclosure of Estimated Amount Available for Set Off Against Future Income Pretax [Line Items]    
Gross unredeemed capital expenditure US$ million 0.0 0.0
2016 Gross tax losses US$ million 0.0 1.2
Gross deferred tax asset not recognised US$ million 0.0 0.0
International operations [member] | Abosso Goldfields Limited [member]    
Disclosure of Estimated Amount Available for Set Off Against Future Income Pretax [Line Items]    
Gross unredeemed capital expenditure US$ million 0.0 88.8
2016 Gross tax losses US$ million 201.4 68.7
Gross deferred tax asset not recognised US$ million $ 63.5 $ 157.5