XML 109 R140.htm IDEA: XBRL DOCUMENT v2.4.1.9
Segment Results and Assets (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Statement of operations - continuing operations      
Revenue $ 2,868.8gfi_IfrsRevenue $ 2,906.3gfi_IfrsRevenue $ 3,530.6gfi_IfrsRevenue
Operating costs (excluding amortization and depreciation) (1,684.9)gfi_IfrsOperatingCosts [1],[2] (1,678.7)gfi_IfrsOperatingCosts [1],[3] (1,673.8)gfi_IfrsOperatingCosts [1],[4]
Gold inventory change 7.2gfi_IfrsGoldInventoryChange [1],[2],[5] 11.8gfi_IfrsGoldInventoryChange [1],[3],[5] 22.0gfi_IfrsGoldInventoryChange [1],[4],[5]
Adjusted operating profit/(loss) before amortization and depreciation 1,191.1gfi_IfrsOperatingProfit [1],[6] 1,239.4gfi_IfrsOperatingProfit [1],[7] 1,878.8gfi_IfrsOperatingProfit [1],[7]
Amortization and depreciation (656.7)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization [1] (610.9)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization [1] (499.2)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization [1]
Adjusted operating profit/(loss) 534.4gfi_IfrsProfitLossBeforeTax [1],[8] 628.5gfi_IfrsProfitLossBeforeTax [1],[9] 1,379.6gfi_IfrsProfitLossBeforeTax [1],[9]
Exploration expenditure (47.2)gfi_IfrsExplorationExpenditure (65.9)gfi_IfrsExplorationExpenditure (128.5)gfi_IfrsExplorationExpenditure
Feasibility and evaluation   (47.7)gfi_IfrsFeasibilityAndEvaluationCosts (44.1)gfi_IfrsFeasibilityAndEvaluationCosts
Finance expense (99.2)gfi_IfrsFinanceExpense (69.5)gfi_IfrsFinanceExpense (55.3)gfi_IfrsFinanceExpense
Investment income 4.2gfi_IfrsInvestmentIncome 8.5gfi_IfrsInvestmentIncome 16.3gfi_IfrsInvestmentIncome
Asset impairments and write-offs (12.5)gfi_IfrsAssetImpairmentCharges (799.2)gfi_IfrsAssetImpairmentCharges (87.6)gfi_IfrsAssetImpairmentCharges
Profit/(loss) on disposal of property, plant and equipment (1.3)gfi_IfrsGainLossOnDispositionOfAssets 1.6gfi_IfrsGainLossOnDispositionOfAssets 0.3gfi_IfrsGainLossOnDispositionOfAssets
Other items as detailed in statement of operations (144.0)gfi_IfrsOtherMaterialItemsOfIncomeExpense (162.6)gfi_IfrsOtherMaterialItemsOfIncomeExpense (112.0)gfi_IfrsOtherMaterialItemsOfIncomeExpense
Royalty (86.1)gfi_IfrsRoyaltyExpense (90.5)gfi_IfrsRoyaltyExpense (116.7)gfi_IfrsRoyaltyExpense
Current taxation (134.2)gfi_IfrsCurrentIncomeTaxExpenseBenefit (161.3)gfi_IfrsCurrentIncomeTaxExpenseBenefit (336.6)gfi_IfrsCurrentIncomeTaxExpenseBenefit
Deferred taxation 16.1gfi_IfrsDeferredIncomeTaxExpenseBenefit 181.4gfi_IfrsDeferredIncomeTaxExpenseBenefit (120.0)gfi_IfrsDeferredIncomeTaxExpenseBenefit
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations 30.2gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations [10] (576.7)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations [10] 395.4gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations [10]
Balance sheet      
Total assets (excluding deferred tax assets) 6,795.3gfi_IfrsAssetsExcludingDeferredTaxes 7,244.3gfi_IfrsAssetsExcludingDeferredTaxes 11,028.3gfi_IfrsAssetsExcludingDeferredTaxes
Total liabilities excluding deferred tax 2,807.4gfi_IfrsLiabilitiesExcludingDeferredTax 2,851.5gfi_IfrsLiabilitiesExcludingDeferredTax 3,766.2gfi_IfrsLiabilitiesExcludingDeferredTax
Deferred tax liabilities/(assets) 324.6gfi_IfrsDeferredTaxLiabilityAsset 347.5gfi_IfrsDeferredTaxLiabilityAsset 1,071.1gfi_IfrsDeferredTaxLiabilityAsset
Capital expenditure 608.9gfi_IfrsCapitalExpenditure 739.2gfi_IfrsCapitalExpenditure 1,600.6gfi_IfrsCapitalExpenditure
Operating Segments [Member] | South Africa | South Deep Gold Mine      
Statement of operations - continuing operations      
Revenue 254.8gfi_IfrsRevenue
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425.7gfi_IfrsRevenue
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450.8gfi_IfrsRevenue
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Operating costs (excluding amortization and depreciation) (245.5)gfi_IfrsOperatingCosts
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= gfi_SouthDeepGoldMineMember
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= country_ZA
[1],[2] (321.8)gfi_IfrsOperatingCosts
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
[1],[3] (302.9)gfi_IfrsOperatingCosts
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
[1],[4]
Gold inventory change        [1],[4],[5]
Adjusted operating profit/(loss) before amortization and depreciation 9.3gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
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= country_ZA
[1],[6] 103.9gfi_IfrsOperatingProfit
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
[1],[7] 147.9gfi_IfrsOperatingProfit
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
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= country_ZA
[1],[7]
Amortization and depreciation (74.5)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
[1] (98.9)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
[1] (82.4)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
[1]
Adjusted operating profit/(loss) (65.2)gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
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= country_ZA
[1],[8] 5.0gfi_IfrsProfitLossBeforeTax
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
[1],[9] 65.6gfi_IfrsProfitLossBeforeTax
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/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
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= country_ZA
[1],[9]
Finance expense (19.6)gfi_IfrsFinanceExpense
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
(8.8)gfi_IfrsFinanceExpense
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
(0.9)gfi_IfrsFinanceExpense
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Investment income 0.9gfi_IfrsInvestmentIncome
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= us-gaap_OperatingSegmentsMember
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= gfi_SouthDeepGoldMineMember
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= country_ZA
0.6gfi_IfrsInvestmentIncome
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
0.6gfi_IfrsInvestmentIncome
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Asset impairments and write-offs (8.4)gfi_IfrsAssetImpairmentCharges
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= us-gaap_OperatingSegmentsMember
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= gfi_SouthDeepGoldMineMember
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= country_ZA
   
Profit/(loss) on disposal of property, plant and equipment (0.3)gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
0.2gfi_IfrsGainLossOnDispositionOfAssets
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
0.4gfi_IfrsGainLossOnDispositionOfAssets
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Other items as detailed in statement of operations (22.6)gfi_IfrsOtherMaterialItemsOfIncomeExpense
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
(23.1)gfi_IfrsOtherMaterialItemsOfIncomeExpense
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
(44.1)gfi_IfrsOtherMaterialItemsOfIncomeExpense
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= us-gaap_OperatingSegmentsMember
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= gfi_SouthDeepGoldMineMember
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= country_ZA
Royalty (1.3)gfi_IfrsRoyaltyExpense
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= us-gaap_OperatingSegmentsMember
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= gfi_SouthDeepGoldMineMember
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= country_ZA
(2.1)gfi_IfrsRoyaltyExpense
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
(2.3)gfi_IfrsRoyaltyExpense
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= us-gaap_OperatingSegmentsMember
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= gfi_SouthDeepGoldMineMember
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= country_ZA
Deferred taxation 33.6gfi_IfrsDeferredIncomeTaxExpenseBenefit
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= gfi_SouthDeepGoldMineMember
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= country_ZA
[11] 6.6gfi_IfrsDeferredIncomeTaxExpenseBenefit
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= gfi_SouthDeepGoldMineMember
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= country_ZA
[11] (4.5)gfi_IfrsDeferredIncomeTaxExpenseBenefit
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= gfi_SouthDeepGoldMineMember
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= country_ZA
[11]
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations (83.0)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
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= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
[10] (21.6)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
[10] 14.9gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
[10]
Balance sheet      
Total assets (excluding deferred tax assets) 13.1gfi_IfrsAssetsExcludingDeferredTaxes
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= gfi_SouthDeepGoldMineMember
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= country_ZA
192.9gfi_IfrsAssetsExcludingDeferredTaxes
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= us-gaap_OperatingSegmentsMember
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= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
208.3gfi_IfrsAssetsExcludingDeferredTaxes
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Total liabilities excluding deferred tax 62.0gfi_IfrsLiabilitiesExcludingDeferredTax
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
128.4gfi_IfrsLiabilitiesExcludingDeferredTax
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
104.0gfi_IfrsLiabilitiesExcludingDeferredTax
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= us-gaap_OperatingSegmentsMember
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= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Deferred tax liabilities/(assets) (22.7)gfi_IfrsDeferredTaxLiabilityAsset
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= us-gaap_OperatingSegmentsMember
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= gfi_SouthDeepGoldMineMember
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= country_ZA
9.8gfi_IfrsDeferredTaxLiabilityAsset
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= us-gaap_OperatingSegmentsMember
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= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
19.2gfi_IfrsDeferredTaxLiabilityAsset
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= us-gaap_OperatingSegmentsMember
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= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Capital expenditure 91.9gfi_IfrsCapitalExpenditure
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
202.4gfi_IfrsCapitalExpenditure
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
314.5gfi_IfrsCapitalExpenditure
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_SouthDeepGoldMineMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Operating Segments [Member] | South Africa | KDC      
Balance sheet      
Total assets (excluding deferred tax assets)      [12] 2,126.3gfi_IfrsAssetsExcludingDeferredTaxes
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= gfi_DriefonteinKloofComplexMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Total liabilities excluding deferred tax      [12] 740.8gfi_IfrsLiabilitiesExcludingDeferredTax
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= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DriefonteinKloofComplexMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Deferred tax liabilities/(assets)      [12] 379.2gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DriefonteinKloofComplexMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Capital expenditure   37.5gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DriefonteinKloofComplexMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
296.2gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DriefonteinKloofComplexMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Operating Segments [Member] | South Africa | Beatrix      
Balance sheet      
Total assets (excluding deferred tax assets)      [12] 313.1gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_BeatrixDivisionMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Total liabilities excluding deferred tax      [12] (26.8)gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_BeatrixDivisionMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Deferred tax liabilities/(assets)      [12] 110.3gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_BeatrixDivisionMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Capital expenditure   10.3gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_BeatrixDivisionMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
80.4gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_BeatrixDivisionMember
/ us-gaap_StatementGeographicalAxis
= country_ZA
Operating Segments [Member] | Ghana      
Statement of operations - continuing operations      
Revenue 931.3gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
1,109.6gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
1,476.7gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Operating costs (excluding amortization and depreciation) (551.5)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[2] (644.8)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[3] (673.5)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[4]
Gold inventory change 0.2gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[2],[5] (19.6)gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[3],[5] 28.4gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[4],[5]
Adjusted operating profit/(loss) before amortization and depreciation 380.1gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[6] 445.1gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[7] 831.6gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[7]
Amortization and depreciation (162.5)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1] (168.3)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1] (148.2)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1]
Adjusted operating profit/(loss) 217.6gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[8] 276.9gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[9] 683.3gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[9]
Finance expense (11.3)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(5.9)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(4.8)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Investment income 1.8gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
0.4gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
0.5gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Asset impairments and write-offs   (393.4)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(4.5)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Profit/(loss) on disposal of property, plant and equipment (0.1)gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
0.1gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
 
Other items as detailed in statement of operations (27.4)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(14.0)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(27.8)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Royalty (46.5)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(55.5)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(73.8)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Current taxation (31.1)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(40.6)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(170.7)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Deferred taxation (16.0)gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
97.3gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(114.0)gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations 87.1gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[10] (134.6)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[10] 288.3gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[10]
Balance sheet      
Total assets (excluding deferred tax assets) 1,776.9gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
1,726.1gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
2,161.8gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Total liabilities excluding deferred tax 305.9gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
260.0gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
470.4gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Deferred tax liabilities/(assets) 269.4gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
253.4gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
350.8gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Capital expenditure 190.1gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
257.1gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
352.0gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Operating Segments [Member] | Ghana | Tarkwa Mine      
Statement of operations - continuing operations      
Revenue 706.7gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
893.1gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
1,198.9gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Operating costs (excluding amortization and depreciation) (373.9)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[2] (473.7)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[3] (494.4)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[4]
Gold inventory change 2.3gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[2],[5] (30.8)gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[3],[5] 24.8gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[4],[5]
Adjusted operating profit/(loss) before amortization and depreciation 335.1gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[6] 388.7gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[7] 729.3gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[7]
Amortization and depreciation (141.6)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1] (137.6)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1] (125.4)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1]
Adjusted operating profit/(loss) 193.5gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[8] 251.1gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[9] 603.8gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[9]
Finance expense (7.8)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(1.2)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(2.3)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Investment income 1.7gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
0.4gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
0.4gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Asset impairments and write-offs   (204.5)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(4.5)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Profit/(loss) on disposal of property, plant and equipment (0.1)gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
0.1gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
 
Other items as detailed in statement of operations (23.1)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(11.8)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(18.2)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Royalty (35.3)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(44.7)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(59.9)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Current taxation (31.1)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(39.7)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(163.1)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Deferred taxation (14.2)gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
33.9gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(92.5)gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations 83.7gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[10] (16.2)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[10] 263.7gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[10]
Balance sheet      
Total assets (excluding deferred tax assets) 1,561.5gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
1,528.3gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
1,775.6gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Total liabilities excluding deferred tax 209.0gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
174.8gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
377.2gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Deferred tax liabilities/(assets) 280.4gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
266.2gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
300.2gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Capital expenditure 174.1gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
207.0gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
259.9gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_TarkwaMineMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Operating Segments [Member] | Ghana | Damang      
Statement of operations - continuing operations      
Revenue 224.6gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
216.4gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
277.8gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Operating costs (excluding amortization and depreciation) (177.6)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[2] (171.1)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[3] (179.1)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[4]
Gold inventory change (2.1)gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[2],[5] 11.1gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[3],[5] 3.6gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[4],[5]
Adjusted operating profit/(loss) before amortization and depreciation 45.0gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[6] 56.4gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[7] 102.3gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[7]
Amortization and depreciation (20.9)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1] (30.6)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1] (22.8)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1]
Adjusted operating profit/(loss) 24.1gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[8] 25.8gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[9] 79.5gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[1],[9]
Finance expense (3.5)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(4.7)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(2.5)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Investment income 0.1gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
  0.1gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Asset impairments and write-offs   (188.9)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
 
Other items as detailed in statement of operations (4.3)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(2.2)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(9.6)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Royalty (11.2)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(10.8)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(13.9)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Current taxation   (0.9)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(7.6)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Deferred taxation (1.8)gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
63.4gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(21.5)gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations 3.4gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[10] (118.3)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[10] 24.6gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
[10]
Balance sheet      
Total assets (excluding deferred tax assets) 215.4gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
197.8gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
386.2gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Total liabilities excluding deferred tax 96.9gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
85.2gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
93.2gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Deferred tax liabilities/(assets) (11.0)gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
(12.8)gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
50.6gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Capital expenditure 16.0gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
50.1gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
92.1gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DamangMember
/ us-gaap_StatementGeographicalAxis
= country_GH
Operating Segments [Member] | Australia      
Statement of operations - continuing operations      
Revenue 1,307.3gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
980.1gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
1,046.6gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Operating costs (excluding amortization and depreciation) (729.8)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[2] (550.8)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[3] (526.1)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[4]
Gold inventory change 8.4gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[2],[5] 12.7gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[3],[5] (17.4)gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[4],[5]
Adjusted operating profit/(loss) before amortization and depreciation 586.0gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[6] 442.0gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[7] 503.0gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[7]
Amortization and depreciation (338.1)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1] (290.0)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1] (214.1)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1]
Adjusted operating profit/(loss) 248.0gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[8] 152.1gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[9] 288.9gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[9]
Exploration expenditure (15.2)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(6.5)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(19.4)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Finance expense (8.3)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(1.4)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(1.5)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Investment income 0.5gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
7.6gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
12.7gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Asset impairments and write-offs (5.6)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(265.9)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(82.2)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Profit/(loss) on disposal of property, plant and equipment 1.9gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
1.3gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(0.2)gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Other items as detailed in statement of operations (51.5)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(37.2)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(13.3)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Royalty (32.6)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(24.1)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(26.0)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Current taxation (74.9)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(49.7)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(53.6)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Deferred taxation 32.1gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
106.9gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
4.2gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations 94.5gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[10] (116.8)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[10] 109.9gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[10]
Balance sheet      
Total assets (excluding deferred tax assets) 1,119.4gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
1,146.2gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
1,439.1gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Total liabilities excluding deferred tax 322.4gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
337.5gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
237.5gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Deferred tax liabilities/(assets) 87.9gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
128.2gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
264.5gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Capital expenditure 274.4gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
193.9gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
377.7gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Operating Segments [Member] | Australia | St Ives      
Statement of operations - continuing operations      
Revenue 458.8gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
569.0gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
752.2gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Operating costs (excluding amortization and depreciation) (292.3)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[2] (345.5)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[3] (378.0)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[4]
Gold inventory change 9.9gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[2],[5] 8.8gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[3],[5] (14.7)gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[4],[5]
Adjusted operating profit/(loss) before amortization and depreciation 176.4gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[6] 232.3gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[7] 359.4gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[7]
Amortization and depreciation (140.5)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1] (194.3)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1] (160.4)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1]
Adjusted operating profit/(loss) 35.9gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[8] 38.0gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[9] 199.0gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[9]
Exploration expenditure (8.2)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(5.1)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(9.8)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Finance expense (3.9)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
  (1.2)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Investment income 0.3gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
3.8gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
6.4gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Asset impairments and write-offs (1.3)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(265.5)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(58.0)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Profit/(loss) on disposal of property, plant and equipment 1.1gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
1.3gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(0.2)gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Other items as detailed in statement of operations (21.6)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(2.7)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(9.8)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Royalty    [13]    [13]    [14]
Current taxation    [13]    [13]    [14]
Deferred taxation    [13]    [13]    [14]
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations    [10],[13]    [10],[13]    [10],[14]
Balance sheet      
Total assets (excluding deferred tax assets) 559.1gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
650.9gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
1,066.7gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Total liabilities excluding deferred tax 145.4gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
167.1gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
189.7gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Deferred tax liabilities/(assets)    [15]    [15]    [16]
Capital expenditure 117.5gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
132.3gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
315.3gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_StIvesMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Operating Segments [Member] | Australia | Agnew/Lawlers      
Statement of operations - continuing operations      
Revenue 342.5gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
302.8gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Operating costs (excluding amortization and depreciation) (173.0)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[2] (135.0)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[3]  
Gold inventory change 0.3gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[2],[5] (1.2)gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[3],[5]  
Adjusted operating profit/(loss) before amortization and depreciation 169.8gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[6] 166.7gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[7]  
Amortization and depreciation (96.4)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1] (71.1)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1]  
Adjusted operating profit/(loss) 73.4gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[8] 95.6gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[9]  
Exploration expenditure (3.7)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(1.4)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Finance expense (1.6)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
   
Investment income 0.2gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
3.8gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Asset impairments and write-offs (4.3)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(0.4)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Other items as detailed in statement of operations (15.3)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(14.2)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Royalty    [13]    [13]  
Current taxation    [13]    [13]  
Deferred taxation    [13]    [13]  
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations    [10],[13]    [10],[13]  
Balance sheet      
Total assets (excluding deferred tax assets) 394.2gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
400.7gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Total liabilities excluding deferred tax 81.0gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
70.4gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Deferred tax liabilities/(assets)    [15]    [15]  
Capital expenditure 83.4gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
52.3gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewLawlersMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Operating Segments [Member] | Australia | Agnew      
Statement of operations - continuing operations      
Revenue     294.4gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Operating costs (excluding amortization and depreciation)     (148.1)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[4]
Gold inventory change     (2.6)gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[4],[5]
Adjusted operating profit/(loss) before amortization and depreciation     143.7gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[7]
Amortization and depreciation     (53.7)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1]
Adjusted operating profit/(loss)     90.0gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[9]
Exploration expenditure     (9.6)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Finance expense     (0.3)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Investment income     6.3gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Asset impairments and write-offs     (24.2)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Other items as detailed in statement of operations     (3.5)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Royalty        [14]
Current taxation        [14]
Deferred taxation        [14]
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations        [10],[14]
Balance sheet      
Total assets (excluding deferred tax assets)     372.4gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Total liabilities excluding deferred tax     47.8gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Deferred tax liabilities/(assets)        [16]
Capital expenditure     62.3gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_AgnewMember
/ us-gaap_StatementGeographicalAxis
= country_AU
Operating Segments [Member] | Australia | Darlot      
Statement of operations - continuing operations      
Revenue 106.2gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
26.0gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Operating costs (excluding amortization and depreciation) (81.9)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[2] (21.6)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[3]  
Gold inventory change (1.7)gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[2],[5] 1.3gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[3],[5]  
Adjusted operating profit/(loss) before amortization and depreciation 22.5gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[6] 5.7gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[7]  
Amortization and depreciation (16.6)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1] (3.6)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1]  
Adjusted operating profit/(loss) 5.9gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[8] 2.1gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[9]  
Exploration expenditure (1.8)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
   
Finance expense (1.0)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(0.2)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Profit/(loss) on disposal of property, plant and equipment 0.7gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
   
Other items as detailed in statement of operations (3.9)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(3.2)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Royalty    [13]    [13]  
Current taxation    [13]    [13]  
Deferred taxation    [13]    [13]  
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations    [10],[13]    [10],[13]  
Balance sheet      
Total assets (excluding deferred tax assets) 24.0gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
25.0gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Total liabilities excluding deferred tax 25.6gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
26.7gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Deferred tax liabilities/(assets)    [15]    [15]  
Capital expenditure 14.7gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
1.5gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_DarlotMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Operating Segments [Member] | Australia | Granny Smith      
Statement of operations - continuing operations      
Revenue 399.8gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
82.3gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Operating costs (excluding amortization and depreciation) (182.6)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[2] (48.8)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[3]  
Gold inventory change   3.7gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[3],[5]  
Adjusted operating profit/(loss) before amortization and depreciation 217.2gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[6] 37.3gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[7]  
Amortization and depreciation (84.6)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1] (21.0)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1]  
Adjusted operating profit/(loss) 132.6gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[8] 16.3gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
[1],[9]  
Exploration expenditure (1.5)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
   
Finance expense (1.8)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(1.2)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Profit/(loss) on disposal of property, plant and equipment 0.1gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
   
Other items as detailed in statement of operations (10.6)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
(17.1)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Royalty    [13]    [13]  
Current taxation    [13]    [13]  
Deferred taxation    [13]    [13]  
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations    [10],[13]    [10],[13]  
Balance sheet      
Total assets (excluding deferred tax assets) 142.1gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
69.6gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Total liabilities excluding deferred tax 70.4gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
73.2gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Deferred tax liabilities/(assets)    [15]    [15]  
Capital expenditure 58.9gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
7.8gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_GrannySmithMember
/ us-gaap_StatementGeographicalAxis
= country_AU
 
Operating Segments [Member] | Peru | Cerro Corona      
Statement of operations - continuing operations      
Revenue 375.5gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
390.9gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
556.6gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
Operating costs (excluding amortization and depreciation) (158.2)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1],[2] (161.3)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1],[3] (171.4)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1],[4]
Gold inventory change (1.5)gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1],[2],[5] 18.8gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1],[3],[5] 11.0gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1],[4],[5]
Adjusted operating profit/(loss) before amortization and depreciation 215.8gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1],[6] 248.4gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1],[7] 396.2gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1],[7]
Amortization and depreciation (79.6)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1] (48.8)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1] (48.8)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1]
Adjusted operating profit/(loss) 136.1gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1],[8] 199.7gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1],[9] 347.4gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[1],[9]
Exploration expenditure   (0.2)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
(2.2)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
Finance expense (3.6)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
(2.2)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
(3.9)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
Investment income   0.4gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
1.8gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
Asset impairments and write-offs   (11.0)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
(0.9)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
Profit/(loss) on disposal of property, plant and equipment (2.6)gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
  0.1gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
Other items as detailed in statement of operations (10.7)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
(11.5)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
(17.8)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
Royalty (5.8)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
(8.9)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
(14.7)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
Current taxation (60.7)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
(66.3)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
(104.7)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
Deferred taxation 13.8gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
(19.6)gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
12.4gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations 66.5gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[10] 80.5gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[10] 217.6gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
[10]
Balance sheet      
Total assets (excluding deferred tax assets) 1,041.9gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
1,054.1gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
1,165.8gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
Total liabilities excluding deferred tax 158.4gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
145.8gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
234.4gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
Deferred tax liabilities/(assets) 18.3gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
32.1gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
12.4gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
Capital expenditure 51.0gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
56.3gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
93.8gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= gfi_CerroCoronaMember
/ us-gaap_StatementGeographicalAxis
= country_PE
Corporate and Other [Member]      
Statement of operations - continuing operations      
Amortization and depreciation (2.0)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[1],[17] (5.0)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[1],[17] (5.7)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[1],[17]
Adjusted operating profit/(loss) (2.0)gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[1],[17],[8] (5.0)gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[1],[17],[9] (5.7)gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[1],[17],[9]
Exploration expenditure (32.0)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] (59.1)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] (106.9)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17]
Feasibility and evaluation   (47.7)gfi_IfrsFeasibilityAndEvaluationCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] (44.1)gfi_IfrsFeasibilityAndEvaluationCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17]
Finance expense (56.5)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] (51.2)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] (44.2)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17]
Investment income 1.1gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] (0.6)gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] 0.7gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17]
Asset impairments and write-offs 1.5gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] (128.9)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17]  
Profit/(loss) on disposal of property, plant and equipment (0.2)gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17]    
Other items as detailed in statement of operations (31.9)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] (76.8)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] (9.0)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17]
Current taxation 32.5gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] (4.8)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] (7.6)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17]
Deferred taxation (47.4)gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] (9.9)gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17] (18.1)gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[17]
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations (134.9)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[10],[17] (383.9)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[10],[17] (234.9)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[10],[17]
Balance sheet      
Total assets (excluding deferred tax assets) 2,844.0gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[18] 3,125.0gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[18] 3,613.9gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[18]
Total liabilities excluding deferred tax 1,958.7gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[18] 1,979.9gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[18] 2,005.9gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[18]
Deferred tax liabilities/(assets) (28.3)gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[18] (76.2)gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[18] (65.3)gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[18]
Capital expenditure 1.4gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[18] 29.6gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[18] 86.2gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[18]
Reclassifications [Member]      
Statement of operations - continuing operations      
Operating costs (excluding amortization and depreciation) (97.2)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
[1],[2] (74.7)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
[1],[3] (69.8)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
[1],[4]
Adjusted operating profit/(loss) before amortization and depreciation (97.2)gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
[1],[6] (74.7)gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
[1],[7] (69.8)gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
[1],[7]
Amortization and depreciation (0.4)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
[1]    
Adjusted operating profit/(loss) (97.6)gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
[1],[8] (74.7)gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
[1],[9] (69.8)gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
[1],[9]
Exploration expenditure (4.1)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
(7.2)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
(61.1)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
Finance expense 18.4gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
2.4gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
2.8gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
Asset impairments and write-offs (4.7)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
1.5gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
53.5gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
Profit/(loss) on disposal of property, plant and equipment     (0.1)gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
Other items as detailed in statement of operations 88.0gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
78.0gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
74.7gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
Balance sheet      
Total liabilities excluding deferred tax   (5.0)gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
 
Deferred tax liabilities/(assets)   5.0gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= gfi_ReclassificationsMember
 
Reconciling Items [Member]      
Statement of operations - continuing operations      
Operating costs (excluding amortization and depreciation) (125.4)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1],[2] (162.4)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1],[3] (199.2)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1],[4]
Gold inventory change 7.2gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1],[2],[5] (1.2)gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1],[3],[5] 0.1gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1],[4],[5]
Adjusted operating profit/(loss) before amortization and depreciation (118.1)gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1],[6] (163.6)gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1],[7] (199.1)gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1],[7]
Amortization and depreciation (20.2)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1] 42.4gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1] 73.4gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1]
Adjusted operating profit/(loss) (138.4)gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1],[8] (121.2)gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1],[9] (125.7)gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[1],[9]
Exploration expenditure 15.1gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(4.8)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
54.3gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Feasibility and evaluation   (20.3)gfi_IfrsFeasibilityAndEvaluationCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(59.4)gfi_IfrsFeasibilityAndEvaluationCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Finance expense   (5.3)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(3.1)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Asset impairments and write-offs 3.2gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
582.4gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(7.5)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Profit/(loss) on disposal of property, plant and equipment   8.6gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
 
Other items as detailed in statement of operations 79.9gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(5.3)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
2.3gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Current taxation   (3.8)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(17.3)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Deferred taxation (3.5)gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(122.0)gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
114.5gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations (43.6)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[10] 308.4gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[10] (41.9)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
[10]
Balance sheet      
Total assets (excluding deferred tax assets) (62.4)gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(40.6)gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(418.3)gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Total liabilities excluding deferred tax (11.1)gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(14.3)gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(77.9)gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Deferred tax liabilities/(assets) (79.2)gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(73.6)gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(526.3)gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Capital expenditure (128.4)gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(195.5)gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
(277.8)gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
Continuing Operation [Member]      
Statement of operations - continuing operations      
Revenue 2,868.8gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
2,906.3gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
3,530.6gfi_IfrsRevenue
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
Operating costs (excluding amortization and depreciation) (1,907.4)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1],[2] (1,915.8)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1],[3] (1,942.9)gfi_IfrsOperatingCosts
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1],[4]
Gold inventory change 14.4gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1],[2],[5] 10.6gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1],[3],[5] 22.1gfi_IfrsGoldInventoryChange
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1],[4],[5]
Adjusted operating profit/(loss) before amortization and depreciation 975.7gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1],[6] 1,001.1gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1],[7] 1,609.8gfi_IfrsOperatingProfit
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1],[7]
Amortization and depreciation (677.3)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1] (568.5)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1] (425.8)gfi_IfrsCostOfGoodsSoldDepreciationDepletionAndAmortization
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1]
Adjusted operating profit/(loss) 298.4gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1],[8] 432.6gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1],[9] 1,184.0gfi_IfrsProfitLossBeforeTax
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1],[9]
Exploration expenditure (36.2)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(77.9)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(135.3)gfi_IfrsExplorationExpenditure
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
Feasibility and evaluation   (68.0)gfi_IfrsFeasibilityAndEvaluationCosts
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(103.5)gfi_IfrsFeasibilityAndEvaluationCosts
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
Finance expense (80.8)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(72.4)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(55.6)gfi_IfrsFinanceExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
Investment income 4.2gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
8.5gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
16.3gfi_IfrsInvestmentIncome
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
Asset impairments and write-offs (14.0)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(215.3)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(41.6)gfi_IfrsAssetImpairmentCharges
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
Profit/(loss) on disposal of property, plant and equipment (1.3)gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
10.2gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
0.2gfi_IfrsGainLossOnDispositionOfAssets
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
Other items as detailed in statement of operations 23.9gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(89.8)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(35.0)gfi_IfrsOtherMaterialItemsOfIncomeExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
Royalty (86.1)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(90.5)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(116.7)gfi_IfrsRoyaltyExpense
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
Current taxation (134.2)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(165.1)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(353.9)gfi_IfrsCurrentIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
Deferred taxation 12.6gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
59.4gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(5.5)gfi_IfrsDeferredIncomeTaxExpenseBenefit
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
(Loss)/income before impairment of equity investees, share of equity investees' losses and discontinued operations (13.4)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[10] (268.2)gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[10] 353.3gfi_IfrsLossIncomeBeforeImpairmentOfInvestmentInEquityInvesteesShareOfEquityInvesteesLossesAndDiscontinuedOperations
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[10]
Balance sheet      
Total assets (excluding deferred tax assets) 6,733.0gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
7,203.7gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
10,624.2gfi_IfrsAssetsExcludingDeferredTaxes
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
Total liabilities excluding deferred tax 2,796.3gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
2,832.2gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
3,687.9gfi_IfrsLiabilitiesExcludingDeferredTax
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
Deferred tax liabilities/(assets) 245.4gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
273.7gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
895.6gfi_IfrsDeferredTaxLiabilityAsset
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
Capital expenditure $ 480.5gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
$ 543.7gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
$ 1,322.8gfi_IfrsCapitalExpenditure
/ us-gaap_ConsolidationItemsAxis
= gfi_ContinuingOperationMember
[1] This caption is based on captions used in the IFRS financial statements and does not reflect the US GAAP captions per the consolidated statement of operations.
[2] Operating costs (excluding amortization and depreciation) for continuing operations for management reporting purposes includes: Corporate expenditure - $27.3 million, Accretion expense on provision for environmental rehabilitation - $15.4 million and Employee termination costs - $42.2 million, which are not included in production costs under U.S. GAAP. In addition, gold inventory change is included in production costs under U.S. GAAP.
[3] Operating costs (excluding amortization and depreciation) for continuing operations for management reporting purposes includes: Corporate expenditure - $39.4 million, Accretion expense on provision for environmental rehabilitation - $10.4 million and Employee termination costs - $35.5 million, which are not included in production costs under U.S. GAAP. In addition, gold inventory change is included in production costs under U.S. GAAP.
[4] Operating costs (excluding amortization and depreciation) for continuing operations for management reporting purposes includes: Corporate expenditure - $38.2 million, Accretion expense on provision for environmental rehabilitation - $13.9 million and Employee termination costs - $6.1 million, which are not included in production costs under U.S. GAAP. In addition, gold inventory change is included in production costs under U.S. GAAP.
[5] Reflects the change in quantity and value of broken ore and ore on the heap leach pads during the fiscal year.
[6] Adjusted operating profit before amortization and depreciation is stated before amortization and depreciation, exploration expenditure, asset impairments and write-offs, (profit)/loss on disposal of property, plant and equipment and royalty.
[7] Adjusted operating profit before amortization and depreciation is stated before amortization and depreciation, exploration expenditure, feasibility and evaluation, asset impairments and write-offs, (profit)/loss on disposal of property, plant and equipment and royalty.
[8] Adjusted operating profit/(loss) is stated before exploration expenditure, asset impairments and write-offs, (profit)/loss on disposal of property, plant and equipment and royalty.
[9] Adjusted operating profit/(loss) is stated before exploration expenditure, feasibility and evaluation, asset impairments and write-offs, (profit)/loss on disposal of property, plant and equipment and royalty.
[10] This caption is before share of equity investees losses, all of which would relate to the corporate and other segment.
[11] Indicative as tax is provided in the holding companies of South Deep.
[12] Sibanye Gold, which includes the KDC and Beatrix reporting segments, was spun off in February 2013 (refer note 9.1).
[13] As all Australian operations are entitled to transfer and off-set losses from one company to another, it is not meaningful to split the royalties, current or deferred taxation.
[14] As these two Australian operations are entitled to transfer and off-set losses from one company to another, it is not meaningful to split the royalties, current or deferred taxation.
[15] As all Australian operations are entitled to transder and off-set losses from one company to another, it is not meaningful to split the royalties, current or deferred taxation.
[16] As these two Australian operations are entitled to transder and off-set losses from one company to another, it is not meaningful to split the royalties, current or deferred taxation.
[17] Corporate and other represents items to reconcile segment data to consolidated financial statement totals.
[18] Corporate and other represents items to reconcile segment data to consolidated financial statement totals. Included in Corporate and other is goodwill relating to the acquisition of South Deep and equity investees.