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Investments - Summary of Investments (Parenthetical) (Detail) $ / shares in Millions | Dec. 31, 2017 $ / shares
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Disclosure of detailed information about investment property [abstract] |
Common share purchase warrants | $ 10.0

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- Definition Common share purchase warrants per share. + References No definition available. + Details
Name: | gfi_CommonSharePurchaseWarrantsPerShare
Namespace Prefix: | gfi_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | ifrs-full_DisclosureOfInvestmentPropertyAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration