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Share-Based Payments - Summary Movement of Share Options Under the Gold Fields Limited 2012 Share Plan (Parenthetical) (Detail) | 12 Months Ended
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Dec. 31, 2017 shares
Disclosure of movements in share options [Abstract] |
Options vested | 0

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- Definition Disclosure of movements in share options. + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of share options vested in share-based payment arrangement. + References No definition available. + Details
Name: | gfi_NumberOfShareOptionsVestedInSharebasedPaymentArrangement
Namespace Prefix: | gfi_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration