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v3.19.1

Assets Held for Sale - Assets Held for Sale (Detail) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Assets Held For Sale [line items] |  |
Total assets held for sale | $ 0.0 | $ 40.0
APP [Member] |  |
Assets Held For Sale [line items] |  |
Total assets held for sale | $ 0.0 | $ 40.0

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

X
- 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

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