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Share-based Payments - Summary of Share-based Payment Arrangements Information (Detail) - USD ($) $ in Millions | 12 Months Ended
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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

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