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Share-based Payments - Summary of Share-based Payment Arrangements Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of Share-based payment expense recognised in profit or loss [Line items]      
Total included in profit or loss for the year $ 37.5 $ 26.8 $ 14.0
Discontinued operations [member]      
Disclosure of Share-based payment expense recognised in profit or loss [Line items]      
Total included in profit or loss for the year   0.6 0.4
Continuing operations [member]      
Disclosure of Share-based payment expense recognised in profit or loss [Line items]      
Total included in profit or loss for the year 37.5 26.8 14.0
Gold Fields Limited 2005 Share Plan [Member] | Discontinued operations [member]      
Disclosure of Share-based payment expense recognised in profit or loss [Line items]      
Total included in profit or loss for the year   0.0 0.0
Gold Fields Limited 2005 Share Plan [Member] | Continuing operations [member]      
Disclosure of Share-based payment expense recognised in profit or loss [Line items]      
Total included in profit or loss for the year 0.0 0.0 0.0
Gold Fields Limited 2012 Share Plan [member] | Discontinued operations [member]      
Disclosure of Share-based payment expense recognised in profit or loss [Line items]      
Performance Shares   0.0 0.0
Bonus Shares   0.0 0.0
Gold Fields Limited 2012 Share Plan [member] | Continuing operations [member]      
Disclosure of Share-based payment expense recognised in profit or loss [Line items]      
Performance Shares 0.0 0.0 1.9
Bonus Shares 0.0 0.0 0.0
Gold Fields Limited 2012 Share Plan Amended [member] | Discontinued operations [member]      
Disclosure of Share-based payment expense recognised in profit or loss [Line items]      
Performance Shares   0.6 0.4
Retention Shares   0.0 0.0
Restricted/Matching Shares   0.0 0.0
Gold Fields Limited 2012 Share Plan Amended [member] | Continuing operations [member]      
Disclosure of Share-based payment expense recognised in profit or loss [Line items]      
Performance Shares 34.7 24.5 12.1
Retention Shares 2.5 2.1 0.0
Restricted/Matching Shares $ 0.3 $ 0.2 $ 0.0