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Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATIONS
Net (loss)/income from continuing operations	$ (25.2)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	$ (286.6)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	$ 290.2us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Reconciled to net cash provided by operations:
- Share of equity investees' profits	4.4us-gaap_IncomeLossFromEquityMethodInvestments	18.4us-gaap_IncomeLossFromEquityMethodInvestments	63.1us-gaap_IncomeLossFromEquityMethodInvestments
- Impairment of investment in equity investee	7.4us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment	0us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment	0us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment
- Deferred income and mining taxes	(12.6)us-gaap_DeferredIncomeTaxExpenseBenefit	(59.4)us-gaap_DeferredIncomeTaxExpenseBenefit	5.5us-gaap_DeferredIncomeTaxExpenseBenefit
- Profit on disposal of investments and subsidiaries	(78.0)us-gaap_GainLossOnSaleOfOtherInvestments	(17.8)us-gaap_GainLossOnSaleOfOtherInvestments	(27.6)us-gaap_GainLossOnSaleOfOtherInvestments
- Impairment of investments	6.8us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	10.3us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	10.5us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities
- Asset impairments and write-offs	14.0us-gaap_AssetImpairmentCharges	215.3us-gaap_AssetImpairmentCharges	41.6us-gaap_AssetImpairmentCharges
- Depreciation and amortization	677.3us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization	568.5us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization	425.8us-gaap_CostOfGoodsSoldDepreciationDepletionAndAmortization
- Loss/(profit) on disposal of property, plant and equipment	1.3us-gaap_GainLossOnDispositionOfAssets	(10.2)us-gaap_GainLossOnDispositionOfAssets	(0.2)us-gaap_GainLossOnDispositionOfAssets
- Share-based compensation	26.0us-gaap_AllocatedShareBasedCompensationExpense	40.5us-gaap_AllocatedShareBasedCompensationExpense	45.5us-gaap_AllocatedShareBasedCompensationExpense
- Long-term incentive plan expense	8.7us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense	0us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense	0us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
- Accretion expense on provision for environmental rehabilitation	15.4us-gaap_AssetRetirementObligationAccretionExpense	10.4us-gaap_AssetRetirementObligationAccretionExpense	13.9us-gaap_AssetRetirementObligationAccretionExpense
- Other	(6.1)us-gaap_OtherNoncashIncomeExpense	(2.6)us-gaap_OtherNoncashIncomeExpense	(10.5)us-gaap_OtherNoncashIncomeExpense
- Cash portion of share of equity investee loss	(3.6)gfi_CashPortionOfShareOfEquityInvesteeLoss	(18.4)gfi_CashPortionOfShareOfEquityInvesteeLoss	(50.1)gfi_CashPortionOfShareOfEquityInvesteeLoss
Changes in operating assets and liabilities:
- Receivables	26.6us-gaap_IncreaseDecreaseInReceivables	140.7us-gaap_IncreaseDecreaseInReceivables	(109.2)us-gaap_IncreaseDecreaseInReceivables
- Inventories	(22.5)us-gaap_IncreaseDecreaseInInventories	(11.0)us-gaap_IncreaseDecreaseInInventories	(81.6)us-gaap_IncreaseDecreaseInInventories
- Accounts payable and provisions	77.7us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	(121.3)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	110.7us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
- Royalties, income and mining taxes payable	26.2gfi_RoyaltiesIncomeAndMiningTaxesPaid	(142.5)gfi_RoyaltiesIncomeAndMiningTaxesPaid	22.8gfi_RoyaltiesIncomeAndMiningTaxesPaid
NET CASH PROVIDED BY CONTINUING OPERATIONS	743.8us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	334.3us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	750.4us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
NET CASH PROVIDED BY DISCONTINUED OPERATIONS		30.9us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	409.5us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
NET CASH PROVIDED BY OPERATIONS	743.8us-gaap_NetCashProvidedByUsedInOperatingActivities	365.2us-gaap_NetCashProvidedByUsedInOperatingActivities	1,159.9us-gaap_NetCashProvidedByUsedInOperatingActivities
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to property, plant and equipment	(480.5)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment	(543.7)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment	(943.4)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Finance expense capitalized	(24.2)us-gaap_InterestCostsCapitalizedAdjustment	(18.3)us-gaap_InterestCostsCapitalizedAdjustment	(13.0)us-gaap_InterestCostsCapitalizedAdjustment
Proceeds on disposal of property, plant and equipment	4.9us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment	10.4us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment	1.4us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Purchase of listed investments	(4.4)us-gaap_PaymentsToAcquireAvailableForSaleSecurities	(3.5)us-gaap_PaymentsToAcquireAvailableForSaleSecurities	(0.8)us-gaap_PaymentsToAcquireAvailableForSaleSecurities
Proceeds on sale of listed investments	6.4us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities	35.0us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities	65.4us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities
Investment in environmental trust funds	(7.1)us-gaap_PaymentsToInvestInDecommissioningFund	(15.4)us-gaap_PaymentsToInvestInDecommissioningFund	(3.3)us-gaap_PaymentsToInvestInDecommissioningFund
NET CASH UTILIZED IN INVESTING ACTIVITIES - CONTINUING OPERATIONS	(423.9)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	(680.5)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	(1,003.7)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
NET CASH UTILIZED IN INVESTING ACTIVITIES - DISCONTINUED OPERATIONS	0us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	(54.9)us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	(381.8)us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
NET CASH UTILIZED IN INVESTING ACTIVITIES	(423.9)us-gaap_NetCashProvidedByUsedInInvestingActivities	(735.4)us-gaap_NetCashProvidedByUsedInInvestingActivities	(1,385.5)us-gaap_NetCashProvidedByUsedInInvestingActivities
CASH FLOWS FROM FINANCING ACTIVITIES
Long and short-term loans raised	463.9us-gaap_ProceedsFromIssuanceOfDebt	3,177.7us-gaap_ProceedsFromIssuanceOfDebt	936.3us-gaap_ProceedsFromIssuanceOfDebt
Long and short-term loans repaid	(591.8)us-gaap_RepaymentsOfDebt	(2,971.3)us-gaap_RepaymentsOfDebt	(975.9)us-gaap_RepaymentsOfDebt
Increase in noncontrolling interests funding	2.0gfi_IncreaseInNoncontrollingInterestFunding	6.8gfi_IncreaseInNoncontrollingInterestFunding	27.7gfi_IncreaseInNoncontrollingInterestFunding
Purchase of noncontrolling interests		(12.8)us-gaap_PaymentsToMinorityShareholders	(10.8)us-gaap_PaymentsToMinorityShareholders
Dividends paid to Company shareholders	(29.8)us-gaap_PaymentsOfDividendsCommonStock	(61.2)us-gaap_PaymentsOfDividendsCommonStock	(364.2)us-gaap_PaymentsOfDividendsCommonStock
Dividends paid to noncontrolling interests	(10.6)us-gaap_PaymentsOfDividendsMinorityInterest	(1.1)us-gaap_PaymentsOfDividendsMinorityInterest	(11.5)us-gaap_PaymentsOfDividendsMinorityInterest
Ordinary shares issued		0.8us-gaap_ProceedsFromIssuanceOfCommonStock	2.0us-gaap_ProceedsFromIssuanceOfCommonStock
NET CASH (UTILIZED IN)/PROVIDED BY FINANCING ACTIVITIES - CONTINUING OPERATIONS	(168.2)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	30.3us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	(398.9)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
NET CASH PROVIDED BY FINANCING ACTIVITIES - DISCONTINUED OPERATIONS		39.0us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	514.7us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
NET CASH (UTILIZED IN)/PROVIDED BY FINANCING ACTIVITIES	(168.2)us-gaap_NetCashProvidedByUsedInFinancingActivities	69.3us-gaap_NetCashProvidedByUsedInFinancingActivities	115.8us-gaap_NetCashProvidedByUsedInFinancingActivities
EFFECT OF EXCHANGE RATE ON CASH AND CASH EQUIVALENTS	(18.7)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents	(29.7)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents	21.4us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
NET INCREASE/(DECREASE) IN CASH AND CASH EQUIVALENTS	133.0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease	(330.6)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease	(88.4)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
CASH AND CASH EQUIVALENTS - beginning of the year	325.0us-gaap_CashAndCashEquivalentsAtCarryingValue	655.6us-gaap_CashAndCashEquivalentsAtCarryingValue	744.0us-gaap_CashAndCashEquivalentsAtCarryingValue
CASH AND CASH EQUIVALENTS - end of year	458.0us-gaap_CashAndCashEquivalentsAtCarryingValue	325.0us-gaap_CashAndCashEquivalentsAtCarryingValue	655.6us-gaap_CashAndCashEquivalentsAtCarryingValue
South Deep Gold Mine
CASH FLOWS FROM FINANCING ACTIVITIES
Payment to South African Equity interests	(1.9)gfi_PaymentOfDividendsToBlackEconomicEquityInterestHolders / us-gaap_StatementBusinessSegmentsAxis = gfi_SouthDeepGoldMineMember	(2.2)gfi_PaymentOfDividendsToBlackEconomicEquityInterestHolders / us-gaap_StatementBusinessSegmentsAxis = gfi_SouthDeepGoldMineMember	(2.5)gfi_PaymentOfDividendsToBlackEconomicEquityInterestHolders / us-gaap_StatementBusinessSegmentsAxis = gfi_SouthDeepGoldMineMember
Chucapaca
Reconciled to net cash provided by operations:
- Profit on disposal of investments and subsidiaries	(72.8)us-gaap_GainLossOnSaleOfOtherInvestments / us-gaap_PropertyPlantAndEquipmentByTypeAxis = gfi_ChucapacaMember
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds on disposal of Other Investments	81.0us-gaap_ProceedsFromSaleOfOtherInvestments / us-gaap_PropertyPlantAndEquipmentByTypeAxis = gfi_ChucapacaMember	0us-gaap_ProceedsFromSaleOfOtherInvestments / us-gaap_PropertyPlantAndEquipmentByTypeAxis = gfi_ChucapacaMember	0us-gaap_ProceedsFromSaleOfOtherInvestments / us-gaap_PropertyPlantAndEquipmentByTypeAxis = gfi_ChucapacaMember
Far South East Project [Member]
Reconciled to net cash provided by operations:
- Share of equity investees' profits	3.6us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = gfi_FarSouthEastMember	18.4us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = gfi_FarSouthEastMember
CASH FLOWS FROM INVESTING ACTIVITIES
Investment	0us-gaap_PaymentsForProceedsFromInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = gfi_FarSouthEastMember	0us-gaap_PaymentsForProceedsFromInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = gfi_FarSouthEastMember	(110.0)us-gaap_PaymentsForProceedsFromInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = gfi_FarSouthEastMember
Mankayan Project-Bezant Resources
CASH FLOWS FROM INVESTING ACTIVITIES
Investment	0us-gaap_PaymentsForProceedsFromInvestments / us-gaap_OtherOwnershipInterestsByNameAxis = gfi_MankayanProjectMember	(10.0)us-gaap_PaymentsForProceedsFromInvestments / us-gaap_OtherOwnershipInterestsByNameAxis = gfi_MankayanProjectMember	0us-gaap_PaymentsForProceedsFromInvestments / us-gaap_OtherOwnershipInterestsByNameAxis = gfi_MankayanProjectMember
Sibanye Gold Limited [Member]
CASH FLOWS FROM FINANCING ACTIVITIES
Cash transferred on spin-off	0gfi_CashTransferredOnSpinoff / dei_LegalEntityAxis = gfi_SibanyeGoldLimitedMember	(106.4)gfi_CashTransferredOnSpinoff / dei_LegalEntityAxis = gfi_SibanyeGoldLimitedMember	0gfi_CashTransferredOnSpinoff / dei_LegalEntityAxis = gfi_SibanyeGoldLimitedMember
Yilgarn South
CASH FLOWS FROM INVESTING ACTIVITIES
Asset purchase	$ 0us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = gfi_YilgarnSouthMember	$ (135.0)us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = gfi_YilgarnSouthMember	$ 0us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = gfi_YilgarnSouthMember

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