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Provisions - Schedule of Provisions for Dividend (Detail) R in Millions, $ in Millions | Dec. 31, 2017 USD ($) | Dec. 31, 2017 ZAR (R) | Dec. 31, 2016 USD ($)
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Disclosure Of Provisions [Abstract] |  |  |
Total provision | $ 8.0 |  | $ 7.8
Current portion included in trade and other payables | (1.6) | R (20.0) | (1.4)
Balance at end of the year | $ 6.4 |  | $ 6.4

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- Definition The amount of current provision for black economic dividend transaction. + References No definition available. + Details
Name: | gfi_CurrentProvisionsForBEEDividend
Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Abstract represents disclosure of provisions. + References No definition available. + Details
Name: | gfi_DisclosureOfProvisionsAbstract
Namespace Prefix: | gfi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of non-current and current provision for black economic dividend transaction. + References No definition available. + Details
Name: | gfi_ProvisionsForBEEDividend
Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition South deep dividend payable. + References No definition available. + Details
Name: | gfi_SouthDeepDividendPayable
Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant