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Options Granted under Gold Fields Management Incentive Scheme (Detail) (The GF Management Incentive Scheme [Member]) | 12 Months Ended
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Dec. 31, 2013 USD ($) | Dec. 31, 2013 ZAR | Dec. 31, 2012 USD ($) | Dec. 31, 2012 ZAR | Dec. 31, 2011 USD ($) | Dec. 31, 2011 ZAR
Number of Options |  |  |  |  |  |
Beginning Balance | 75,500 | 75,500 | 311,225 | 311,225 | 976,533 | 976,533
Spin-off of Sibanye Gold - forefeited | (28,100) | (28,100) |  |  |  |
Exercised and released | (31,147) | (31,147) | (204,570) | (204,570) | (614,340) | (614,340)
Forfeited | (16,253) | (16,253) | (31,155) | (31,155) | (50,968) | (50,968)
Ending Balance |  |  | 75,500 | 75,500 | 311,225 | 311,225
Average option price |  |  |  |  |  |
Average price, at beginning of year | $ 10.09 | 86.51 | $ 9.04 | 73.48 | $ 11.24 | 75.85
Spin - off of Sibanye Gold - forefeited | $ 10.09 | 89.69 |  |  |  |
Exercised and released | $ 6.17 | 59.21 | $ 8.38 | 68.60 | $ 10.02 | 72.33
Forfeited | $ 9.68 | 92.93 | $ 9.02 | 73.91 | $ 16.43 | 118.63
Average price, at end of year |  |  | $ 10.09 | 86.51 | $ 9.04 | 73.48

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- Definition The number of shares under options that were canceled during the reporting period as a result of the spin-off of discontinued operations. + References No definition available. + Details
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated due to the spin-off of discontinued operations. + References No definition available. + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of share options (or share units) exercised during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28,29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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