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Assets Held for Sale - Assets Held for Sale (Detail) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Assets Held For Sale [Line Items] |  |
Total assets held for sale | $ 40.0 | $ 26.4
Damang Mining Fleet and Related Spare [Member] |  |
Assets Held For Sale [Line Items] |  |
Total assets held for sale | 0.0 | 26.4
APP [Member] |  |
Assets Held For Sale [Line Items] |  |
Total assets held for sale | $ 40.0 | $ 0.0

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- Definition Assets held for sale. + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Line items for assets held for sale table. + References No definition available. + Details
Name: | gfi_AssetsHeldForSaleLineItems
Namespace Prefix: | gfi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_ClassesOfAssetsAxis=gfi_DamangMiningFleetAndRelatedSpareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfAssetsAxis=gfi_AppMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |