XML 123 R94.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Goodwill - Additional Information (Detail) | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2013 USD ($) | Dec. 31, 2012 | Dec. 31, 2013 South Deep Gold Mine | Dec. 31, 2012 South Deep Gold Mine | Dec. 31, 2013 South Africa Rand South Deep Gold Mine | Dec. 31, 2012 South Africa Rand South Deep Gold Mine | Dec. 31, 2013 Currency U.S. Dollar South Deep Gold Mine | Dec. 31, 2012 Currency U.S. Dollar South Deep Gold Mine
Goodwill [Line Items] |  |  |  |  |  |  |  |
Impairment to the goodwill | $ 0 |  |  |  |  |  |  |
Long-term gold price |  |  |  |  | 400,000 | 400,000 | 1,300 | 1,500
Exchange rate |  |  | R9.50 to $1.00 | R8.29 to $1.00 |  |  |  |
South Deep life of mine (in years) |  |  | 73 years | 80 years |  |  |  |
Discount rate, based on a calculated weighted average cost of capital to Gold Fields, lower limit | 10.90% | 9.40% |  |  |  |  |  |
Discount rate, based on a calculated weighted average cost of capital to Gold Fields, upper limit | 12.30% | 12.10% |  |  |  |  |  |

X
- Definition Discount Rate Used in Goodwill Impairment Testing, Lower Limit + References No definition available. + Details
Name: | gfi_DiscountRateUsedInGoodwillImpairmentTestingLowerLimit
Namespace Prefix: | gfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Discount Rate Used in Goodwill Impairment Testing, Upper Limit + References No definition available. + Details
Name: | gfi_DiscountRateUsedInGoodwillImpairmentTestingUpperLimit
Namespace Prefix: | gfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Long-term exchange rate used in the life of mine calculations. + References No definition available. + Details
Name: | gfi_LongTermExchangeRate
Namespace Prefix: | gfi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Long-term gold price used in the life of mine calculations. + References No definition available. + Details
Name: | gfi_LongTermGoldPrice
Namespace Prefix: | gfi_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration