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v3.19.1

Accounting Policies - Expected Useful Lives of Depreciation of Non-mining Assets (Detail) | 12 Months Ended
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Dec. 31, 2018
Vehicles [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Expected useful lives percentage | 20.00%
Computer [Member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Expected useful lives percentage | 33.30%
Furniture and Equipment [member] |
Disclosure of detailed information about property, plant and equipment [line items] |
Expected useful lives percentage | 10.00%

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- Definition Rate Of Depreciation Of Non Mining Assets + References No definition available. + Details
Name: | gfi_RateOfDepreciationOfNonMiningAssets
Namespace Prefix: | gfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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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
Name: | ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_VehiclesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_ComputerEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=gfi_FurnitureAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |