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(Loss)/Earnings Per Share - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Earnings Per Common Share [Line Items]      
Net (loss)/income attributable to Gold Fields shareholders - Discontinued operations $ 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity $ 20.5us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity [1],[2] $ 362.2us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity [1],[2]
Weighted average number of shares issued at the end of the year 769,141,871gfi_WeightedAverageNumberOfSharesOutstandingDiscontinuedOperationsBasic 742,606,726gfi_WeightedAverageNumberOfSharesOutstandingDiscontinuedOperationsBasic 727,459,457gfi_WeightedAverageNumberOfSharesOutstandingDiscontinuedOperationsBasic
Weighted average number of diluted shares issued at the end of the year 769,141,871gfi_WeightedAverageNumberOfSharesOutstandingDiscontinuedOperationsDiluted 742,606,726gfi_WeightedAverageNumberOfSharesOutstandingDiscontinuedOperationsDiluted 730,723,950gfi_WeightedAverageNumberOfSharesOutstandingDiscontinuedOperationsDiluted
[1] Basic earnings per share from discontinued operations Basic earnings per share is calculated by dividing the profit attributable to ordinary shareholders from discontinued operations of $nil (fiscal 2013: $20.5 million and fiscal 2012: $362.2 million) by the weighted average number of ordinary shares in issue in fiscal 2014 of 769,141,871 (fiscal 2013: 742,606,726 and fiscal 2012: 727,459,457).
[2] Diluted earnings per share from discontinued operations Diluted earnings per share is calculated on the basis of profit attributable to ordinary shareholders from discontinued operations of $nil (fiscal 2013: $20.5 million and fiscal 2012: $362.2 million) and 769,141,871 shares, being the diluted number of ordinary shares in issue in fiscal 2014 (fiscal 2013: 742,606,726 and fiscal 2012: 730,723,950).