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Major Group Investments - Direct and Indirect - Schedule of Major Group Investments - Direct and Indirect (Parenthetical) (Detail) - USD ($)
 9 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
 [2]
Disclosure of subsidiaries [line items]          
Accumulated non-controlling interest $ 127,200,000 $ 122,600,000 [1] $ 127,200,000 $ 122,600,000 [1]  
Dividends paid to non-controlling interests     6,400,000 200,000 [2] $ 12,100,000
Abosso Goldfields Limited [member]          
Disclosure of subsidiaries [line items]          
Accumulated non-controlling interest 5,800,000 3,600,000 5,800,000 3,600,000  
Dividends paid to non-controlling interests     0 0  
Gold Fields Ghana Limited [member]          
Disclosure of subsidiaries [line items]          
Accumulated non-controlling interest 119,200,000 116,600,000 119,200,000 116,600,000  
Dividends paid to non-controlling interests     5,800,000 0  
Gold Fields La Cima SA [member]          
Disclosure of subsidiaries [line items]          
Accumulated non-controlling interest 2,400,000 2,500,000 $ 2,400,000 $ 2,500,000  
Dividends paid to non-controlling interests $ 600,000 $ 200,000      
Newshelf 899 (Pty) Ltd [member]          
Disclosure of subsidiaries [line items]          
Phase-in participation term     20 years    
BEE partners' stake     10.00%    
Newshelf ownership percentage     90.00%    
[1] As Restated - Refer note 40 for further details.
[2] The restatement is as a result of the discontinued operations.