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Provisions - Summary of Silicosis Settlement Costs (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | [1]
Provisions [abstract] |  |  |  |
Provision raised | $ 30.2 | $ 0.0 | [1] | $ 0.0
Unwinding of provision recognised as finance expense | 0.9 |  |  |
Translation | 0.8 | 0.0 |  |
Balance at end of the year | $ 31.9 | $ 0.0 |  |
[1] | As Restated - Refer note 40 for further details.

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- Definition Provision for settlement costs. + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Silicosis settlement costs. + References No definition available. + Details
Name: | gfi_SilicosisSettlementCosts
Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Translation + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Unwinding of provision recognised as finance expense + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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