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v2.4.1.9

Depreciation of Non-Mining Assets (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2014
Vehicles |
Property, Plant and Equipment [Line Items] |
Depreciation rate | 20.00%gfi_DepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_VehiclesMember
Computers |
Property, Plant and Equipment [Line Items] |
Depreciation rate | 33.30%gfi_DepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ComputerEquipmentMember
Furniture and Equipment |
Property, Plant and Equipment [Line Items] |
Depreciation rate | 10.00%gfi_DepreciationRate / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_FurnitureAndFixturesMember

X
- Definition Depreciation Rate + References No definition available. + Details
Name: | gfi_DepreciationRate
Namespace Prefix: | gfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_VehiclesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |