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Major Group Investments - Direct and Indirect - Schedule of Major Group Investments - Direct and Indirect (Detail) - shares
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Abosso Goldfields Limited [member] | Class A Shares [member]    
Disclosure of subsidiaries [line items]    
Shares held 49,734,000 49,734,000
Group beneficial interest 90.00% 90.00%
Abosso Goldfields Limited [member] | Class B Shares [member]    
Disclosure of subsidiaries [line items]    
Shares held 4,266,000 4,266,000
Group beneficial interest 90.00% 90.00%
Agnew Gold Mining Company Proprietary Limited [member]    
Disclosure of subsidiaries [line items]    
Shares held 54,924,757 54,924,757
Group beneficial interest 100.00% 100.00%
Beatrix Mines Limited [member]    
Disclosure of subsidiaries [line items]    
Shares held 96,549,020 96,549,020
Group beneficial interest 100.00% 100.00%
Beatrix Mining Ventures Limited [member]    
Disclosure of subsidiaries [line items]    
Shares held 9,625,001 9,625,001
Group beneficial interest 100.00% 100.00%
Darlot Mining Company Pty Ltd [Member]    
Disclosure of subsidiaries [line items]    
Shares held 1 1
Group beneficial interest 100.00% 100.00%
Driefontein Consolidated (Pty) Ltd [member]    
Disclosure of subsidiaries [line items]    
Shares held 1,000 1,000
Group beneficial interest 100.00% 100.00%
GFI Joint Venture Holdings (Proprietary) Limited [Member]    
Disclosure of subsidiaries [line items]    
Shares held 311,668,564 311,668,564
Group beneficial interest 100.00% 100.00%
GFL Mining Services Limited [member]    
Disclosure of subsidiaries [line items]    
Shares held 235,676,387 235,676,387
Group beneficial interest 100.00% 100.00%
Gold Fields Ghana Limited [member]    
Disclosure of subsidiaries [line items]    
Shares held 900 900
Group beneficial interest 90.00% 90.00%
Gold Fields Group Services (Pty) Ltd [member]    
Disclosure of subsidiaries [line items]    
Shares held 1 1
Group beneficial interest 100.00% 100.00%
Gold Fields Holdings Company BVI Limited [member]    
Disclosure of subsidiaries [line items]    
Shares held 4,084 4,084
Group beneficial interest 100.00% 100.00%
Gold Fields La Cima SA [member]    
Disclosure of subsidiaries [line items]    
Shares held 1,426,050,205 1,426,050,205
Group beneficial interest 99.50% 99.50%
Gold Fields Operations Limited [Member]    
Disclosure of subsidiaries [line items]    
Shares held 156,279,947 156,279,947
Group beneficial interest 100.00% 100.00%
Gold Fields Orogen Holdings (BVI) Ltd [Member]    
Disclosure of subsidiaries [line items]    
Shares held 356 356
Group beneficial interest 100.00% 100.00%
Gruyere Mining Company Pty Ltd [member]    
Disclosure of subsidiaries [line items]    
Shares held 1 1
Group beneficial interest 100.00% 100.00%
GSM Mining Company Pty Ltd [member]    
Disclosure of subsidiaries [line items]    
Shares held 1 1
Group beneficial interest 100.00% 100.00%
Kloof Gold Mining Company Ltd [member]    
Disclosure of subsidiaries [line items]    
Shares held 138,600,000 138,600,000
Group beneficial interest 100.00% 100.00%
Newshelf 899 (Pty) Ltd [member]    
Disclosure of subsidiaries [line items]    
Shares held 90,000,000 90,000,000
Group beneficial interest 100.00% 100.00%
St Ives Gold Mining Company Pty Ltd [Member]    
Disclosure of subsidiaries [line items]    
Shares held 281,051,329 281,051,329
Group beneficial interest 100.00% 100.00%