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Valuation Allowance for Deferred Tax Assets (Detail) (USD $) In Millions, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Valuation Allowance [Line Items] |  |  |  |
Valuation allowance for deferred tax assets | $ 330.2 |  | $ 324.4 |
Orogen Investments SA (Luxembourg) |  |  |  |
Valuation Allowance [Line Items] |  |  |  |
Valuation allowance for deferred tax assets | 41.0 |  | 37.9 |
Gold Fields Arctic Platinum Oy |  |  |  |
Valuation Allowance [Line Items] |  |  |  |
Valuation allowance for deferred tax assets | 23.2 |  | 28.8 |
Living Gold (Pty) Limited |  |  |  |
Valuation Allowance [Line Items] |  |  |  |
Valuation allowance for deferred tax assets |  | [1] | 4.8 | [1]
GFI Joint Venture Holdings |  |  |  |
Valuation Allowance [Line Items] |  |  |  |
Valuation allowance for deferred tax assets | 266.0 |  | 252.3 |
Other |  |  |  |
Valuation Allowance [Line Items] |  |  |  |
Valuation allowance for deferred tax assets |  |  | $ 0.6 |
[1] | Valuation allowance not raised at December 31, 2013 as it was distributed as part of the Sibanye Gold spin-off.

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
Name: | us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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