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Share-based Payments - Summary of Share Options Under the Gold Fields Limited 2005 Share Plan (Detail) - Gold Fields Limited 2005 Share Plan [Member]
12 Months Ended
Dec. 31, 2018
shares
$ / shares
Dec. 31, 2017
shares
$ / shares
Average Instrument Price [member]    
Movement during the year:    
Outstanding at beginning of the year | $ / shares $ 9.42 $ 7.39
Forfeited | $ / shares 9.42 7.75
Outstanding at end of the year (vested) | $ / shares $ 0 $ 9.42
Share Appreciation Rights [member]    
Disclosure of movements in share options [line items]    
Outstanding at beginning of the year | shares 11,521 530,611
Movement during the year:    
Forfeited | shares (11,521) (519,090)
Outstanding at end of the year | shares 0 11,521