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Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of transactions between related parties [line items] |  |  |
Non-executive directors' fees paid | $ 1.2 | $ 1.0 | $ 0.8
Director's interest in issued share capital or voting control | 1.00% |  |
Executive Committee and Non-Executive Directors [Member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Key management personnel's beneficial interest in issued and listed share capital | 0.20% | 0.20% |

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- Definition Non executive directors fees paid. + References No definition available. + Details
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- Definition Percentage of key management personnel's beneficial interest in issued and listed share capital. + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | num:percentItemType
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Period Type: | instant

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- Definition Percentage of interest in issued share capital of each director. + References No definition available. + Details
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Namespace Prefix: | gfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |