HARMONY GOLD MINING CO LTD (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 0001000 - Document - Document and Entity Information Network

*

*

 http://www.harmony.co.za/role/DocumentAndEntityInformation
2 Implied Table Table

*

*

 implied:Table
3 Entity [Abstract] Abstract hmy:EntityAbstract
4 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
5 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
6 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
7 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
8 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
9 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
10 Document Type Concept (Submission Type) For Period dei:DocumentType
11 Entity Filer Category Concept (Filer Category) For Period dei:EntityFilerCategory
12 Entity Well-known Seasoned Issuer Concept (Yes/No) For Period dei:EntityWellKnownSeasonedIssuer
13 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
14 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
15 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
16 1002000 - Statement - Group Income Statements Network

*

*

 http://www.harmony.co.za/role/GroupIncomeStatements
17 Implied Table Table

*

*

 implied:Table
18 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
19 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
20 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
21 Production costs Concept (Monetary) For Period Debit hmy:ProductionCosts1
22 Amortisation and depreciation Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
23 (Impairment)/reversal of impairment of assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
24 Other items Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
25 Gross profit/(loss) Concept (Monetary) For Period Credit ifrs-full:GrossProfit
26 Corporate, administration and other expenditure Concept (Monetary) For Period Debit ifrs-full:AdministrativeExpense
27 Exploration expenditure Concept (Monetary) For Period Debit ifrs-full:ExpenseArisingFromExplorationForAndEvaluationOfMineralResources
28 Gains on derivatives Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnChangeInFairValueOfDerivatives
29 Other operating expenses Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
30 Operating profit/(loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
31 Gain on bargain purchase Concept (Monetary) For Period Credit ifrs-full:GainRecognisedInBargainPurchaseTransaction
32 Loss on liquidation of subsidiaries Concept (Monetary) For Period Credit ifrs-full:GainsLossesRecognisedWhenControlInSubsidiaryIsLost
33 Share of profit/(loss) from associate Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
34 Acquisition-related costs Concept (Monetary) For Period Debit ifrs-full:AcquisitionrelatedCostsRecognisedAsExpenseForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination
35 Investment income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
36 Finance costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
37 Profit/(loss) before taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
38 Taxation Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
39 Net profit/(loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
40 Attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
41 Owners of the parent Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
42 Earnings/(loss) per ordinary share (cents) Abstract ifrs-full:BasicEarningsPerShareAbstract
43 Total earnings/(loss) (in dollars per share) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
44 Diluted earnings/(loss) per ordinary share (cents) Abstract ifrs-full:DilutedEarningsPerShareAbstract
45 Total diluted earnings/(loss) (in dollars per share) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
46 1003000 - Statement - Group Statements of Comprehensive Income Network

*

*

 http://www.harmony.co.za/role/GroupStatementsOfComprehensiveIncome
47 Implied Table Table

*

*

 implied:Table
48 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
49 Net profit/(loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
50 Other comprehensive income/(loss) for the year, net of income tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
51 Items that may be reclassified subsequently to profit or loss Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax
52 Foreign exchange translation gain/(loss) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
53 Remeasurement of Rand gold hedging contracts Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
54 Items that will not be reclassified to profit or loss: Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
55 Remeasurement of retirement benefit obligation Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
56 Total comprehensive income/(loss) for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
57 Attributable to: Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
58 Owners of the parent Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
59 1004000 - Statement - Group Balance Sheets Network

*

*

 http://www.harmony.co.za/role/GroupBalanceSheets
60 Implied Table Table

*

*

 implied:Table
61 Statement of financial position [abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
62 ASSETS Abstract ifrs-full:AssetsAbstract
63 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
64 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
65 Intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
66 Restricted cash Concept (Monetary) As Of Debit ifrs-full:NoncurrentRestrictedCashAndCashEquivalents
67 Restricted investments Concept (Monetary) As Of Debit hmy:RestrictedInvestments1
68 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
69 Inventories Concept (Monetary) As Of Debit ifrs-full:NoncurrentInventories
70 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:NoncurrentReceivables
71 Derivative financial instruments Concept (Monetary) As Of Debit ifrs-full:NoncurrentDerivativeFinancialAssets
72 Other non-current assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
73 Total non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
74 Current assets Abstract ifrs-full:CurrentAssetsAbstract
75 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
76 Restricted cash Concept (Monetary) As Of Debit ifrs-full:CurrentRestrictedCashAndCashEquivalents
77 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
78 Derivative financial instruments Concept (Monetary) As Of Debit ifrs-full:CurrentDerivativeFinancialAssets
79 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
80 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
81 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
82 EQUITY AND LIABILITIES Abstract ifrs-full:EquityAndLiabilitiesAbstract
83 Share capital and reserves Abstract ifrs-full:EquityAbstract
84 Share capital and premium Concept (Monetary) As Of Credit hmy:IssuedCapitalandSharePremium
85 Other reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
86 Accumulated loss Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
87 Total equity Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
88 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
89 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
90 Provision for environmental rehabilitation Concept (Monetary) As Of Credit ifrs-full:LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts
91 Provision for silicosis settlement Concept (Monetary) As Of Credit ifrs-full:LongtermLegalProceedingsProvision
92 Retirement benefit obligation Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisionsForEmployeeBenefits
93 Borrowings Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
94 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
95 Derivative financial instruments Concept (Monetary) As Of Credit ifrs-full:NoncurrentDerivativeFinancialLiabilities
96 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
97 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
98 Borrowings Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
99 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
100 Derivative financial instruments Concept (Monetary) As Of Credit ifrs-full:CurrentDerivativeFinancialLiabilities
101 Total current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
102 Total equity and liabilities Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
103 1005000 - Statement - Group Statements of Changes in Equity in Shareholders' Equity Network

*

*

 http://www.harmony.co.za/role/GroupStatementsOfChangesInEquityInShareholdersEquity
104 Statement of changes in equity [table] Table

*

*

 ifrs-full:StatementOfChangesInEquityTable
105 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
106 Equity [member] Member ifrs-full:EquityMember
107 Share capital and share premium Member ifrs-full:IssuedCapitalMember
108 Accumu- lated loss Member ifrs-full:RetainedEarningsMember
109 Other reserves Member ifrs-full:OtherReservesMember
110 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
111 Beginning balance (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
112 Beginning balance Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
113 Exercise of employee share options (in shares) Concept (Shares) For Period hmy:NumberofSharesIssuedtoSettleShareOptionsinShareBasedPaymentArrangement
114 Shares issued and fully paid (in shares) Concept (Shares) For Period ifrs-full:IncreaseDecreaseInNumberOfOrdinarySharesIssued
115 Shares issued and fully paid Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
116 Shares issued to the Tlhakanelo Employee Share Trust (in shares) Concept (Shares) For Period hmy:EmployeeStockOwnershipPlanESOPSharesContributedtoESOP
117 Share-based payments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
118 Reversal of provision for odd lot repurchases Concept (Monetary) For Period Credit hmy:ReversalofProvisionforOddLotRepurchase
119 Net profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
120 Other comprehensive income (loss) for the year Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeAttributableToOwnersOfParent
121 Reclassification from other reserves Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesEquity
122 Dividends paid Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParent
123 Ending balance (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
124 Ending balance Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
125 1006000 - Statement - Group Cash Flow Statements Network

*

*

 http://www.harmony.co.za/role/GroupCashFlowStatements
126 Implied Table Table

*

*

 implied:Table
127 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
128 CASH FLOW FROM OPERATING ACTIVITIES Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
129 Cash generated by operations Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
130 Interest received Concept (Monetary) For Period Debit ifrs-full:InterestReceivedClassifiedAsOperatingActivities
131 Interest paid Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsOperatingActivities
132 Income and mining taxes refunded/(paid) Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidRefundClassifiedAsOperatingActivities
133 Cash generated by operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
134 CASH FLOW FROM INVESTING ACTIVITIES Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
135 (Increase)/decrease in restricted cash Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInDecreaseIncreaseInRestrictedCashAndCashEquivalents
136 Decrease in amounts invested in restricted investments Concept (Monetary) For Period Debit hmy:CashFlowsfromUsedinDecreaseIncreaseinRestrictedInvestments
137 Cash on acquisition of Hidden Valley Concept (Monetary) For Period Debit ifrs-full:CashAndCashEquivalentsInSubsidiaryOrBusinessesAcquiredOrDisposed2013
138 Acquisition of Moab Khotsong Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
139 Loan to ARM BBEE Trust Concept (Monetary) For Period Credit ifrs-full:CashAdvancesAndLoansMadeToOtherPartiesClassifiedAsInvestingActivities
140 Additions to intangible assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
141 Proceeds from disposal of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
142 Additions to property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
143 Cash utilised by investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
144 CASH FLOW FROM FINANCING ACTIVITIES Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
145 Borrowings raised Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
146 Borrowings repaid Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
147 Proceeds from the issue of shares Concept (Monetary) For Period Debit hmy:NetProceedsFromIssuingShares
148 Dividends paid Concept (Monetary) For Period Credit ifrs-full:DividendsPaidClassifiedAsFinancingActivities
149 Cash generated from/(utilised by) financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
150 Foreign currency translation adjustments Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
151 Net increase/(decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
152 Cash and cash equivalents - beginning of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
153 Cash and cash equivalents - end of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
154 Share issue costs Concept (Monetary) For Period Credit ifrs-full:PaymentsForShareIssueCosts
155 2137100 - Disclosure - General Information Network

*

*

 http://www.harmony.co.za/role/GeneralInformation
156 Implied Table Table

*

*

 implied:Table
157 Disclosure Of General Information About Financial Statements [Abstract] Abstract hmy:DisclosureOfGeneralInformationAboutFinancialStatementsAbstract
158 General Information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory
159 2138100 - Disclosure - Accounting Policies Network

*

*

 http://www.harmony.co.za/role/AccountingPolicies
160 Implied Table Table

*

*

 implied:Table
161 Accounting Policies, Changes In Accounting Estimates And Errors [Abstract] Abstract hmy:AccountingPoliciesChangesInAccountingEstimatesAndErrorsAbstract
162 Accounting Policies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
163 2139100 - Disclosure - Critical Accounting Estimates and Judgements Network

*

*

 http://www.harmony.co.za/role/CriticalAccountingEstimatesAndJudgements
164 Implied Table Table

*

*

 implied:Table
165 Accounting Policies, Changes In Accounting Estimates And Errors [Abstract] Abstract hmy:AccountingPoliciesChangesInAccountingEstimatesAndErrorsAbstract
166 Critical Accounting Estimates and Judgements Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
167 2140100 - Disclosure - Financial Risk Management Network

*

*

 http://www.harmony.co.za/role/FinancialRiskManagement
168 Implied Table Table

*

*

 implied:Table
169 Financial Instruments [Abstract] Abstract hmy:FinancialInstrumentsAbstract
170 Financial Risk Management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialRiskManagementExplanatory
171 2141100 - Disclosure - Revenue Network

*

*

 http://www.harmony.co.za/role/Revenue
172 Implied Table Table

*

*

 implied:Table
173 Revenue [abstract] Abstract ifrs-full:RevenueAbstract
174 Revenue Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRevenueExplanatory
175 2142100 - Disclosure - Cost of Sales Network

*

*

 http://www.harmony.co.za/role/CostOfSales
176 Implied Table Table

*

*

 implied:Table
177 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
178 Cost of sales Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCostOfSalesExplanatory
179 2143100 - Disclosure - Gains on Derivatives Network

*

*

 http://www.harmony.co.za/role/GainsOnDerivatives
180 Implied Table Table

*

*

 implied:Table
181 Gains (losses) on change in fair value of derivatives [abstract] Abstract ifrs-full:GainsLossesOnChangeInFairValueOfDerivativesAbstract
182 Gains on Derivatives Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDerivativeFinancialInstrumentsExplanatory
183 2144100 - Disclosure - Other Operating Expenses Network

*

*

 http://www.harmony.co.za/role/OtherOperatingExpenses
184 Implied Table Table

*

*

 implied:Table
185 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
186 Other Operating Expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory
187 2145100 - Disclosure - Operating Profit/(Loss) Network

*

*

 http://www.harmony.co.za/role/OperatingProfitLoss
188 Implied Table Table

*

*

 implied:Table
189 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
190 Operating Profit/(Loss) Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProfitLossFromOperatingActivitiesExplanatory
191 2147100 - Disclosure - Investment Income Network

*

*

 http://www.harmony.co.za/role/InvestmentIncome
192 Implied Table Table

*

*

 implied:Table
193 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
194 Investment Income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceIncomeExplanatory
195 2148100 - Disclosure - Finance Costs Network

*

*

 http://www.harmony.co.za/role/FinanceCosts
196 Implied Table Table

*

*

 implied:Table
197 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
198 Finance Costs Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceCostExplanatory
199 2149100 - Disclosure - Taxation Network

*

*

 http://www.harmony.co.za/role/Taxation
200 Implied Table Table

*

*

 implied:Table
201 Income Taxes [Abstract] Abstract hmy:IncomeTaxesAbstract
202 Taxation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
203 2150100 - Disclosure - Earnings/(Loss) Per Share Network

*

*

 http://www.harmony.co.za/role/EarningsLossPerShare
204 Implied Table Table

*

*

 implied:Table
205 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
206 Earnings/(Loss) Per Share Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
207 2151100 - Disclosure - Acquisitions and Business Combinations Network

*

*

 http://www.harmony.co.za/role/AcquisitionsAndBusinessCombinations
208 Implied Table Table

*

*

 implied:Table
209 Disclosure of detailed information about business combination [abstract] Abstract ifrs-full:DisclosureOfBusinessCombinationsAbstract
210 Acquisitions and Business Combinations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBusinessCombinationsExplanatory
211 2152100 - Disclosure - Property, Plant and Equipment Network

*

*

 http://www.harmony.co.za/role/PropertyPlantAndEquipment
212 Implied Table Table

*

*

 implied:Table
213 Property, plant and equipment [abstract] Abstract ifrs-full:PropertyPlantAndEquipmentAbstract
214 Property, Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
215 2153100 - Disclosure - Intangible Assets Network

*

*

 http://www.harmony.co.za/role/IntangibleAssets
216 Implied Table Table

*

*

 implied:Table
217 Disclosure of detailed information about intangible assets [abstract] Abstract ifrs-full:DisclosureOfIntangibleAssetsAbstract
218 Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIntangibleAssetsExplanatory
219 2154100 - Disclosure - Restricted Cash Network

*

*

 http://www.harmony.co.za/role/RestrictedCash
220 Implied Table Table

*

*

 implied:Table
221 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
222 Restricted Cash Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRestrictedCashAndCashEquivalentsExplanatory
223 2155100 - Disclosure - Restricted Investments Network

*

*

 http://www.harmony.co.za/role/RestrictedInvestments
224 Implied Table Table

*

*

 implied:Table
225 Financial Instruments [Abstract] Abstract hmy:FinancialInstrumentsAbstract
226 Restricted Investments Concept (Text Block (HTML)) For Period hmy:DisclosureOfRestrictedInvestmentsTextBlock
227 2156100 - Disclosure - Trade and Other Receivables Network

*

*

 http://www.harmony.co.za/role/TradeAndOtherReceivables
228 Implied Table Table

*

*

 implied:Table
229 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
230 Trade and Other Receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
231 2157100 - Disclosure - Derivative Financial Assets Network

*

*

 http://www.harmony.co.za/role/DerivativeFinancialAssets
232 Implied Table Table

*

*

 implied:Table
233 Financial Instruments [Abstract] Abstract hmy:FinancialInstrumentsAbstract
234 Derivative Financial Assets Concept (Text Block (HTML)) For Period hmy:DerivativeInstrumentsandHedgingActivitiesDisclosure1TextBlock
235 2158100 - Disclosure - Investments in Associates Network

*

*

 http://www.harmony.co.za/role/InvestmentsInAssociates
236 Implied Table Table

*

*

 implied:Table
237 Interest in Other Entities [Abstract] Abstract hmy:InterestinOtherEntitiesAbstract
238 Investments in Associates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesExplanatory
239 2159100 - Disclosure - Investment in Joint Operations Network

*

*

 http://www.harmony.co.za/role/InvestmentInJointOperations
240 Implied Table Table

*

*

 implied:Table
241 Interest in Other Entities [Abstract] Abstract hmy:InterestinOtherEntitiesAbstract
242 Investment in Joint Operations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfJointOperationsExplanatory
243 2160100 - Disclosure - Inventories Network

*

*

 http://www.harmony.co.za/role/Inventories
244 Implied Table Table

*

*

 implied:Table
245 Inventories [Abstract] Abstract hmy:InventoriesAbstract
246 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInventoriesExplanatory
247 2161100 - Disclosure - Share Capital Network

*

*

 http://www.harmony.co.za/role/ShareCapital
248 Implied Table Table

*

*

 implied:Table
249 Share Capital, Reserves and Other Equity Interest [Abstract] Abstract hmy:ShareCapitalReservesandOtherEquityInterestAbstract
250 Share Capital Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
251 2162100 - Disclosure - Other Reserves Network

*

*

 http://www.harmony.co.za/role/OtherReserves
252 Implied Table Table

*

*

 implied:Table
253 Disclosure of reserves within equity [abstract] Abstract ifrs-full:DisclosureOfReservesWithinEquityAbstract
254 Other Reserves Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReservesAndOtherEquityInterestExplanatory
255 2163100 - Disclosure - Provision for Environmental Rehabilitation Network

*

*

 http://www.harmony.co.za/role/ProvisionForEnvironmentalRehabilitation
256 Implied Table Table

*

*

 implied:Table
257 Provision For Environmental Rehabilitation [Abstract] Abstract hmy:ProvisionForEnvironmentalRehabilitationAbstract
258 Provision for Environmental Rehabilitation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProvisionsExplanatory
259 2164100 - Disclosure - Provision for Silicosis Settlement Network

*

*

 http://www.harmony.co.za/role/ProvisionForSilicosisSettlement
260 Implied Table Table

*

*

 implied:Table
261 Other provisions, contingent liabilities and contingent assets [Abstract] Abstract hmy:OtherprovisionscontingentliabilitiesandcontingentassetsAbstract
262 Provision for Silicosis Settlement Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProvisionsExplanatory
263 2165100 - Disclosure - Retirement Benefit Obligation Network

*

*

 http://www.harmony.co.za/role/RetirementBenefitObligation
264 Implied Table Table

*

*

 implied:Table
265 Employee Benefits [Abstract] Abstract hmy:EmployeeBenefitsAbstract
266 Retirement Benefit Obligation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
267 2166100 - Disclosure - Borrowings Network

*

*

 http://www.harmony.co.za/role/Borrowings
268 Implied Table Table

*

*

 implied:Table
269 Financial Instruments [Abstract] Abstract hmy:FinancialInstrumentsAbstract
270 Borrowings Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBorrowingsExplanatory
271 2167100 - Disclosure - Other Non-Current Liabilities Network

*

*

 http://www.harmony.co.za/role/OtherNonCurrentLiabilities
272 Implied Table Table

*

*

 implied:Table
273 Disclosure of other provisions, contingent liabilities and contingent assets [Abstract] Abstract hmy:DisclosureofotherprovisionscontingentliabilitiesandcontingentassetsAbstract
274 Other Non-Current Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherNoncurrentLiabilitiesExplanatory
275 2168100 - Disclosure - Trade and Other Payables Network

*

*

 http://www.harmony.co.za/role/TradeAndOtherPayables
276 Implied Table Table

*

*

 implied:Table
277 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
278 Trade and Other Payables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
279 2169100 - Disclosure - Cash Generated by Operations Network

*

*

 http://www.harmony.co.za/role/CashGeneratedByOperations
280 Implied Table Table

*

*

 implied:Table
281 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
282 Cash Generated by Operations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashFlowStatementExplanatory
283 2170100 - Disclosure - Employee Benefits Network

*

*

 http://www.harmony.co.za/role/EmployeeBenefits
284 Implied Table Table

*

*

 implied:Table
285 Employee Benefits [Abstract] Abstract hmy:EmployeeBenefitsAbstract
286 Employee Benefits Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
287 2171100 - Disclosure - Share-Based Payments Network

*

*

 http://www.harmony.co.za/role/ShareBasedPayments
288 Implied Table Table

*

*

 implied:Table
289 Share-based payment arrangements [Abstract] Abstract hmy:SharebasedpaymentarrangementsAbstract
290 Share-Based Payments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSharebasedPaymentArrangementsExplanatory
291 2172100 - Disclosure - Related Parties Network

*

*

 http://www.harmony.co.za/role/RelatedParties
292 Implied Table Table

*

*

 implied:Table
293 Related Party [Abstract] Abstract hmy:RelatedPartyAbstract
294 Related Parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
295 2173100 - Disclosure - Commitments and Contingencies Network

*

*

 http://www.harmony.co.za/role/CommitmentsAndContingencies
296 Implied Table Table

*

*

 implied:Table
297 Other provisions, contingent liabilities and contingent assets [Abstract] Abstract hmy:OtherprovisionscontingentliabilitiesandcontingentassetsAbstract
298 Commitments and Contingencies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory
299 2174100 - Disclosure - Subsequent Events Network

*

*

 http://www.harmony.co.za/role/SubsequentEvents
300 Implied Table Table

*

*

 implied:Table
301 Events after reporting period [Abstract] Abstract hmy:EventsafterreportingperiodAbstract
302 Subsequent Events Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory
303 2175100 - Disclosure - Segment Report Network

*

*

 http://www.harmony.co.za/role/SegmentReport
304 Implied Table Table

*

*

 implied:Table
305 Disclosure of entity's operating segments [Abstract] Abstract hmy:DisclosureofentitysoperatingsegmentsAbstract
306 Segment Report Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
307 2176100 - Disclosure - Reconciliation of Segment Information to Consolidated Income Statements and Balance Sheets Network

*

*

 http://www.harmony.co.za/role/ReconciliationOfSegmentInformationToConsolidatedIncomeStatementsAndBalanceSheets
308 Implied Table Table

*

*

 implied:Table
309 Disclosure of entity's operating segments [Abstract] Abstract hmy:DisclosureofentitysoperatingsegmentsAbstract
310 Reconciliation of Segment Information to Consolidated Income Statements and Balance Sheets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
311 2238201 - Disclosure - Accounting Policies (Policies) Network

*

*

 http://www.harmony.co.za/role/AccountingPoliciesPolicies
312 Implied Table Table

*

*

 implied:Table
313 Accounting Policies, Changes In Accounting Estimates And Errors [Abstract] Abstract hmy:AccountingPoliciesChangesInAccountingEstimatesAndErrorsAbstract
314 Basis of Presentation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
315 Statement of IFRS compliance Concept (Text Block (HTML)) For Period ifrs-full:StatementOfIFRSCompliance
316 Basis of Preparation/Measurement Basis Concept (Text Block (HTML)) For Period ifrs-full:ExplanationOfMeasurementBasesUsedInPreparingFinancialStatements
317 Consolidation Concept (Text Block (HTML)) For Period hmy:DescriptionOfAccountingPolicyForConsolidationPolicyTextBlock
318 Consolidation, Subsidiaries Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSubsidiariesExplanatory
319 Business Combinations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory
320 Consolidation, Associates Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociates
321 Consolidation, Joint Arrangements Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentsInJointVentures
322 Consolidation, Structured Entities Concept (Text Block (HTML)) For Period hmy:DescriptionOfAccountingPolicyForInvestmentsInStructuredEntitiesPolicyTextBlock
323 Foreign Currency Translation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
324 Functional Presentation Currency Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFunctionalCurrencyExplanatory
325 Derivatives and Hedging Activities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory
326 Exploration Expenditure Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForExplorationAndEvaluationExpenditures
327 Impairment of Non-Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory
328 Operating Profit Concept (Text Block (HTML)) For Period hmy:DescriptionOfAccountingPolicyForOperatingProfitPolicyTextBlock
329 Revenue Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
330 Investment Income Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinanceIncomeAndCostsExplanatory
331 Finance Costs Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBorrowingCostsExplanatory
332 Taxation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
333 Dividends Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDividendsExplanatory
334 Mining Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMiningAssetsExplanatory
335 Mining Assets Under Construction Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForConstructionInProgressExplanatory
336 Undeveloped Properties Concept (Text Block (HTML)) For Period hmy:DescriptionOfAccountingPolicyForUndevelopedPropertiesPolicyTextBlock
337 Other Non-Mining Assets Concept (Text Block (HTML)) For Period hmy:DescriptionOfAccountingPolicyForLandAndOtherNonMiningFixedAssetsPolicyTextBlock
338 Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory
339 Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialAssetsExplanatory
340 Environmental trust funds Concept (Text Block (HTML)) For Period hmy:DescriptionOfAccountingPolicyForEnvironmentalTrustFundsExplanatoryPolicyTextBlock
341 Inventory Measurement Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
342 Issued Capital Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
343 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
344 Provision for Environmental Rehabilitation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEnvironmentRelatedExpenseExplanatory
345 Employee Benefits Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
346 Financial Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory
347 Trade and Other Payables Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory
348 Share-Based Payments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory
349 Segment Reporting Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSegmentReportingExplanatory
350 2338302 - Disclosure - Accounting Policies (Tables) Network

*

*

 http://www.harmony.co.za/role/AccountingPoliciesTables
351 Implied Table Table

*

*

 implied:Table
352 Accounting Policies, Changes In Accounting Estimates And Errors [Abstract] Abstract hmy:AccountingPoliciesChangesInAccountingEstimatesAndErrorsAbstract
353 New Standards, Amendments to Standards and Interpretations to Existing Standards Adopted By The Group Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfInitialApplicationOfStandardsOrInterpretations
354 New Standards, Amendments to Standards and Interpretations to Existing Standards That Are Not Yet Effective and Have Not Been Early Adopted Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations
355 2340301 - Disclosure - Financial Risk Management (Tables) Network

*

*

 http://www.harmony.co.za/role/FinancialRiskManagementTables
356 Implied Table Table

*

*

 implied:Table
357 Financial Instruments [Abstract] Abstract hmy:FinancialInstrumentsAbstract
358 Disclosure of Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialAssetsExplanatory
359 Disclosure of Financial Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory
360 Schedule of Sensitivity Analysis for Types of Market Risk Concept (Text Block (HTML)) For Period ifrs-full:SensitivityAnalysisForEachTypeOfMarketRisk
361 Schedule of Credit Risk Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCreditRiskExposureExplanatory
362 Disclosure of Contractual Maturities of Financial Liabilities Concept (Text Block (HTML)) For Period ifrs-full:MaturityAnalysisForNonderivativeFinancialLiabilities
363 Disclosure of Net Debt Concept (Text Block (HTML)) For Period hmy:DisclosureOfNetDebtTableTextBlock
364 Schedule of Financial Assets Measured at Fair Value Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementOfAssetsExplanatory
365 Schedule of Financial Liabilities Measured at Fair Value Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementOfLiabilitiesExplanatory
366 2341301 - Disclosure - Revenue (Tables) Network

*

*

 http://www.harmony.co.za/role/RevenueTables
367 Implied Table Table

*

*

 implied:Table
368 Revenue [abstract] Abstract ifrs-full:RevenueAbstract
369 Disclosure of detailed information about revenue Concept (Text Block (HTML)) For Period hmy:DisclosureOfRevenueExplanatoryTableTextBlock
370 2342301 - Disclosure - Cost of Sales (Tables) Network

*

*

 http://www.harmony.co.za/role/CostOfSalesTables
371 Implied Table Table

*

*

 implied:Table
372 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
373 Disclosure of cost of sales Concept (Text Block (HTML)) For Period hmy:DisclosureOfCostOfSalesExplanatoryTableTextBlock
374 Disclosure of production costs Concept (Text Block (HTML)) For Period hmy:DisclosureOfProductionCostsExplanatoryTableTextBlock
375 Disclosure of impairment of assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitExplanatory
376 2343301 - Disclosure - Gains on Derivatives (Tables) Network

*

*

 http://www.harmony.co.za/role/GainsOnDerivativesTables
377 Implied Table Table

*

*

 implied:Table
378 Gains (losses) on change in fair value of derivatives [abstract] Abstract ifrs-full:GainsLossesOnChangeInFairValueOfDerivativesAbstract
379 Schedule of Gains on Derivatives Concept (Text Block (HTML)) For Period hmy:DisclosureOfGainLossOnDerivativesExplanatoryTableTextBlock
380 2344301 - Disclosure - Other Operating Expenses (Tables) Network

*

*

 http://www.harmony.co.za/role/OtherOperatingExpensesTables
381 Implied Table Table

*

*

 implied:Table
382 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
383 Schedule of Other Operating Expenses Concept (Text Block (HTML)) For Period hmy:DisclosureOfOtherOperatingIncomeExpenseExplanatoryTableTextBlock
384 2345301 - Disclosure - Operating Profit/(Loss) (Tables) Network

*

*

 http://www.harmony.co.za/role/OperatingProfitLossTables
385 Implied Table Table

*

*

 implied:Table
386 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
387 Disclosure of profit/(loss) from operating activities Concept (Text Block (HTML)) For Period hmy:DisclosureOfProfitLossFromOperatingActivitiesExplanatoryTableTextBlock
388 2347301 - Disclosure - Investment Income (Tables) Network

*

*

 http://www.harmony.co.za/role/InvestmentIncomeTables
389 Implied Table Table

*

*

 implied:Table
390 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
391 Disclosure of finance income Concept (Text Block (HTML)) For Period hmy:DisclosureOfFinanceIncomeExplanatoryTableTextBlock
392 2348301 - Disclosure - Finance Costs (Tables) Network

*

*

 http://www.harmony.co.za/role/FinanceCostsTables
393 Implied Table Table

*

*

 implied:Table
394 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
395 Disclosure of Finance Costs Concept (Text Block (HTML)) For Period hmy:DisclosureOfFinanceCostsExplanatoryTableTextBlock
396 2349301 - Disclosure - Taxation (Tables) Network

*

*

 http://www.harmony.co.za/role/TaxationTables
397 Implied Table Table

*

*

 implied:Table
398 Income Taxes [Abstract] Abstract hmy:IncomeTaxesAbstract
399 Disclosure of Taxation (Expense)/Credit Concept (Text Block (HTML)) For Period hmy:DisclosureOfMajorComponentsOfTaxExpenseIncomeTableTextBlock
400 Disclosure of Major Items Causing the Income Tax Provision to Differ from the South African Mining Statutory Tax Rate Concept (Text Block (HTML)) For Period hmy:DisclosureOfReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAndAverageEffectiveTaxRateTableTextBlock
401 Analysis of Deferred Tax Assets and Liabilities and Potential Future Tax Deductions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
402 2350301 - Disclosure - Earnings/(Loss) Per Share (Tables) Network

*

*

 http://www.harmony.co.za/role/EarningsLossPerShareTables
403 Implied Table Table

*

*

 implied:Table
404 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
405 Disclosure of Earnings/(Loss) Per Share Concept (Text Block (HTML)) For Period ifrs-full:EarningsPerShareExplanatory
406 Disclosure of Dividends Declared Concept (Text Block (HTML)) For Period hmy:DisclosureOfDividendsDeclaredExplanatoryTableTextBlock
407 2351301 - Disclosure - Acquisitions and Business Combinations (Tables) Network

*

*

 http://www.harmony.co.za/role/AcquisitionsAndBusinessCombinationsTables
408 Implied Table Table

*

*

 implied:Table
409 Disclosure of detailed information about business combination [abstract] Abstract ifrs-full:DisclosureOfBusinessCombinationsAbstract
410 Disclosure of Fair Value of Assets Acquired and Liabilities Assumed Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory
411 2352301 - Disclosure - Property, Plant and Equipment (Tables) Network

*

*

 http://www.harmony.co.za/role/PropertyPlantAndEquipmentTables
412 Implied Table Table

*

*

 implied:Table
413 Property, plant and equipment [abstract] Abstract ifrs-full:PropertyPlantAndEquipmentAbstract
414 Disclosure of Property, Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
415 Disclosure of Gold Price, Silver Price, Exchange Rates and Gold Resource Value Assumptions Concept (Text Block (HTML)) For Period hmy:DisclosureOfGoldPriceSilverPriceAndExchangeRatesAssumptionsExplanatoryTableTextBlock
416 Disclosure of Sensitivity Analysis - Impairment of Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitExplanatory
417 2353301 - Disclosure - Intangible Assets (Tables) Network

*

*

 http://www.harmony.co.za/role/IntangibleAssetsTables
418 Implied Table Table

*

*

 implied:Table
419 Disclosure of detailed information about intangible assets [abstract] Abstract ifrs-full:DisclosureOfIntangibleAssetsAbstract
420 Schedule of Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory
421 Schedule of Reconciliation of Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillExplanatory
422 2354301 - Disclosure - Restricted Cash (Tables) Network

*

*

 http://www.harmony.co.za/role/RestrictedCashTables
423 Implied Table Table

*

*

 implied:Table
424 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
425 Schedule of Restricted Cash Concept (Text Block (HTML)) For Period hmy:DisclosureOfRestrictedCashAndCashEquivalentsExplanatoryTableTextBlock
426 2355301 - Disclosure - Restricted Investments (Tables) Network

*

*

 http://www.harmony.co.za/role/RestrictedInvestmentsTables
427 Implied Table Table

*

*

 implied:Table
428 Financial Instruments [Abstract] Abstract hmy:FinancialInstrumentsAbstract
429 Disclosure of Restricted Investments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialAssetsExplanatory
430 Reconciliation of Movement in Investments Held by Environmental Trust Funds Concept (Text Block (HTML)) For Period hmy:DisclosureOfMovementInInvestmentsExplanatoryTableTextBlock
431 2356301 - Disclosure - Trade and Other Receivables (Tables) Network

*

*

 http://www.harmony.co.za/role/TradeAndOtherReceivablesTables
432 Implied Table Table

*

*

 implied:Table
433 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
434 Disclosure of Trade and Other Receivables Concept (Text Block (HTML)) For Period hmy:ScheduleofAccountsNotesLoansandFinancingReceivableTableTextBlock
435 Disclosure of Movement in the Provision for Impairment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsExplanatory
436 Disclosure of Ageing of Current Trade Receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedExplanatory
437 2357301 - Disclosure - Derivative Financial Assets (Tables) Network

*

*

 http://www.harmony.co.za/role/DerivativeFinancialAssetsTables
438 Implied Table Table

*

*

 implied:Table
439 Financial Instruments [Abstract] Abstract hmy:FinancialInstrumentsAbstract
440 Disclosure of Derivative Financial Assets and Open Position at the Reporting Date Concept (Text Block (HTML)) For Period hmy:DisclosureOfDerivativeInstrumentsAndHedgingActivitiesExplanatoryTableTextBlock
441 2358301 - Disclosure - Investments in Associates (Tables) Network

*

*

 http://www.harmony.co.za/role/InvestmentsInAssociatesTables
442 Implied Table Table

*

*

 implied:Table
443 Interest in Other Entities [Abstract] Abstract hmy:InterestinOtherEntitiesAbstract
444 Net Investments In Associate Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInAssociatesExplanatory
445 2360301 - Disclosure - Inventories (Tables) Network

*

*

 http://www.harmony.co.za/role/InventoriesTables
446 Implied Table Table

*

*

 implied:Table
447 Inventories [Abstract] Abstract hmy:InventoriesAbstract
448 Disclosure of inventories Concept (Text Block (HTML)) For Period hmy:ScheduleofInventoryTableTextBlock
449 2362301 - Disclosure - Other Reserves (Tables) Network

*

*

 http://www.harmony.co.za/role/OtherReservesTables
450 Implied Table Table

*

*

 implied:Table
451 Disclosure of reserves within equity [abstract] Abstract ifrs-full:DisclosureOfReservesWithinEquityAbstract
452 Disclosure of Other Reserves Concept (Text Block (HTML)) For Period hmy:DisclosureOfOtherReservesExplanatoryTableTextBlock
453 2363301 - Disclosure - Provision for Environmental Rehabilitation (Tables) Network

*

*

 http://www.harmony.co.za/role/ProvisionForEnvironmentalRehabilitationTables
454 Implied Table Table

*

*

 implied:Table
455 Provision For Environmental Rehabilitation [Abstract] Abstract hmy:ProvisionForEnvironmentalRehabilitationAbstract
456 Disclosure of Rates Used in Calculation of Provision Concept (Text Block (HTML)) For Period hmy:DisclosureofAssumptionsUsedinCalculatingOtherProvisionsTableTextBlock
457 Reconciliation of the Total Liability for Environmental Rehabilitation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsExplanatory
458 Disclosure of Future Net Undiscounted Obligation Concept (Text Block (HTML)) For Period hmy:DisclosureOfDetailedInformationAboutEnvironmentalRehabilitationObligationExplanatoryTableTextBlock
459 2364301 - Disclosure - Provision for Silicosis Settlement (Tables) Network

*

*

 http://www.harmony.co.za/role/ProvisionForSilicosisSettlementTables
460 Implied Table Table

*

*

 implied:Table
461 Other provisions, contingent liabilities and contingent assets [Abstract] Abstract hmy:OtherprovisionscontingentliabilitiesandcontingentassetsAbstract
462 Reconciliation of the Total Provision for the Silicosis Settlement Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsExplanatory
463 Disclosure of the Impact of a Reasonable Change in Certain Key Assumptions Concept (Text Block (HTML)) For Period hmy:DisclosureOfSensitivityAnalysisForAssumptionsUsedToEstimateProvisionForSettlementExplanatoryTableTextBlock
464 2365301 - Disclosure - Retirement Benefit Obligation (Tables) Network

*

*

 http://www.harmony.co.za/role/RetirementBenefitObligationTables
465 Implied Table Table

*

*

 implied:Table
466 Employee Benefits [Abstract] Abstract hmy:EmployeeBenefitsAbstract
467 Disclosure of Unfunded Obligations and Net Liability of Defined Benefit Plan Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
468 Disclosure of the Effect of a Percentage Point Increase and Decrease in the Assumed Medical Cost Trend Rate Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
469 2366301 - Disclosure - Borrowings (Tables) Network

*

*

 http://www.harmony.co.za/role/BorrowingsTables
470 Implied Table Table

*

*

 implied:Table
471 Financial Instruments [Abstract] Abstract hmy:FinancialInstrumentsAbstract
472 Disclosure of Terms and Debt Repayment Schedule Concept (Text Block (HTML)) For Period hmy:DisclosureOfMaturitiesOfBorrowingsExplanatoryTableTextBlock
473 Disclosure of Interest Bearing Borrowings Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
474 Disclosure of Effective Interest Rates Concept (Text Block (HTML)) For Period hmy:DisclosureOfEffectiveInterestRatesOnBorrowingsExplanatoryTableTextBlock
475 2367301 - Disclosure - Other Non-Current Liabilities (Tables) Network

*

*

 http://www.harmony.co.za/role/OtherNonCurrentLiabilitiesTables
476 Implied Table Table

*

*

 implied:Table
477 Disclosure of other provisions, contingent liabilities and contingent assets [Abstract] Abstract hmy:DisclosureofotherprovisionscontingentliabilitiesandcontingentassetsAbstract
478 Other Non-Current Liabilities Concept (Text Block (HTML)) For Period hmy:OtherLiabilities1TableTextBlock
479 2368301 - Disclosure - Trade and Other Payables (Tables) Network

*

*

 http://www.harmony.co.za/role/TradeAndOtherPayablesTables
480 Implied Table Table

*

*

 implied:Table
481 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
482 Disclosure of Trade and Other Payables Concept (Text Block (HTML)) For Period hmy:DisclosureOfTradeAndOtherPayablesExplanatoryTableTextBlock
483 2369301 - Disclosure - Cash Generated by Operations (Tables) Network

*

*

 http://www.harmony.co.za/role/CashGeneratedByOperationsTables
484 Implied Table Table

*

*

 implied:Table
485 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
486 Disclosure of Cash Generated by Operations Concept (Text Block (HTML)) For Period hmy:DisclosureOfCashFlowsFromUsedInOperatingActivitiesExplanatoryTableTextBlock
487 2370301 - Disclosure - Employee Benefits (Tables) Network

*

*

 http://www.harmony.co.za/role/EmployeeBenefitsTables
488 Implied Table Table

*

*

 implied:Table
489 Employee Benefits [Abstract] Abstract hmy:EmployeeBenefitsAbstract
490 Disclosure of Permanent Employees and Aggregate Earnings of Employees Concept (Text Block (HTML)) For Period hmy:DisclosureOfPermanentEmployeesAndAggregateEarningsOfEmployeesExplanatoryTableTextBlock
491 2371301 - Disclosure - Share-Based Payments (Tables) Network

*

*

 http://www.harmony.co.za/role/ShareBasedPaymentsTables
492 Implied Table Table

*

*

 implied:Table
493 Share-based payment arrangements [Abstract] Abstract hmy:SharebasedpaymentarrangementsAbstract
494 Explanation of effect of share-based payments on entity's profit or loss Concept (Text Block (HTML)) For Period ifrs-full:ExplanationOfEffectOfSharebasedPaymentsOnProfitOrLoss
495 Disclosure of terms and conditions of share-based payment arrangement Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementExplanatory
496 Disclosure of number and weighted average remaining contractual life of outstanding share options Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory
497 Disclosure of indirect measurement of fair value of goods or services received, share options granted during period Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedOtherEquityInstrumentsGrantedDuringPeriodExplanatory
498 2372301 - Disclosure - Related Parties (Tables) Network

*

*

 http://www.harmony.co.za/role/RelatedPartiesTables
499 Implied Table Table

*

*

 implied:Table
500 Related Party [Abstract] Abstract hmy:RelatedPartyAbstract
501 Disclosure of Directors and Prescribed Officers Who Own Shares in Harmony Concept (Text Block (HTML)) For Period hmy:DisclosureOfKeyManagementPersonnelCompensationExplanatoryTableTextBlock
502 Disclosure of Transactions with Related Parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory
503 2373301 - Disclosure - Commitments and Contingencies (Tables) Network

*

*

 http://www.harmony.co.za/role/CommitmentsAndContingenciesTables
504 Implied Table Table

*

*

 implied:Table
505 Other provisions, contingent liabilities and contingent assets [Abstract] Abstract hmy:OtherprovisionscontingentliabilitiesandcontingentassetsAbstract
506 Disclosure of Capital Commitments Concept (Text Block (HTML)) For Period hmy:DisclosureOfCapitalCommitmentsTableTextBlock
507 Disclosure of Environmental Obligation Guarantees Concept (Text Block (HTML)) For Period hmy:DisclosureOfEnvironmentalObligationGuaranteesTableTextBlock
508 2375301 - Disclosure - Segment Report Segment Report (Tables) Network

*

*

 http://www.harmony.co.za/role/SegmentReportSegmentReportTables
509 Implied Table Table

*

*

 implied:Table
510 Disclosure of entity's operating segments [Abstract] Abstract hmy:DisclosureofentitysoperatingsegmentsAbstract
511 Segment Report Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeographicalAreasExplanatory
512 2376301 - Disclosure - Reconciliation of Segment Information to Consolidated Income Statements and Balance Sheets (Tables) Network

*

*

 http://www.harmony.co.za/role/ReconciliationOfSegmentInformationToConsolidatedIncomeStatementsAndBalanceSheetsTables
513 Implied Table Table

*

*

 implied:Table
514 Disclosure of entity's operating segments [Abstract] Abstract hmy:DisclosureofentitysoperatingsegmentsAbstract
515 Disclosure of operating segments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOperatingSegmentsExplanatory
516 2438403 - Disclosure - Accounting Policies (Details) Network

*

*

 http://www.harmony.co.za/role/AccountingPoliciesDetails
517 Implied Table Table

*

*

 implied:Table
518 Accounting Policies, Changes In Accounting Estimates And Errors [Abstract] Abstract hmy:AccountingPoliciesChangesInAccountingEstimatesAndErrorsAbstract
519 Average foreign exchange rate Concept (Decimal) For Period ifrs-full:AverageForeignExchangeRate
520 Closing foreign exchange rate Concept (Decimal) As Of ifrs-full:ClosingForeignExchangeRate
521 2440402 - Disclosure - Financial Risk Management - Schedule of Financial Assets and Liabilities (Details) Network

*

*

 http://www.harmony.co.za/role/FinancialRiskManagementScheduleOfFinancialAssetsAndLiabilitiesDetails
522 Disclosure Of Financial Assets And Liabilities [Table] Table

*

*

 hmy:DisclosureOfFinancialAssetsAndLiabilitiesTable
523 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
524 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
525 Loans and receivables Member ifrs-full:LoansAndReceivablesCategoryMember
526 Available-for-sale financial assets Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
527 Held-to-maturity financial assets Member ifrs-full:HeldtomaturityInvestmentsCategoryMember
528 Hedging instruments Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
529 Fair value through profit or loss financial assets Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
530 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
531 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
532 Restricted cash Member hmy:RestrictedCashMember
533 Restricted investments Member hmy:RestrictedInvestmentsMember
534 Investment in financial assets Member hmy:InvestmentinFinancialAssetsMember
535 Other non-current receivables Member hmy:OtherNoncurrentReceivablesMember
536 Derivative financial assets Member ifrs-full:DerivativesMember
537 Trade and other receivables Member ifrs-full:TradeReceivablesMember
538 Cash and cash equivalents Member hmy:CashandCashEquivalents1Member
539 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
540 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
541 Fair value through profit or loss Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
542 Financial liabilities at amortised cost Member ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
543 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
544 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
545 Derivative financial liabilities Member hmy:DerivativeFinancialInstrumentsMember
546 Borrowings Member hmy:Borrowings1Member
547 Other non-current payables Member hmy:OtherNoncurrentPayablesMember
548 Trade and other payables Member hmy:TradeAndOtherPayablesMember
549 Disclosure Of Financial Assets And Liabilities [Line Items] LineItems hmy:DisclosureOfFinancialAssetsAndLiabilitiesLineItems
550 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
551 Financial liabilities Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
552 2440403 - Disclosure - Financial Risk Management - Foreign Exchange Risk (Details) Network

*

*

 http://www.harmony.co.za/role/FinancialRiskManagementForeignExchangeRiskDetails
553 Disclosure of nature and extent of risks arising from financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
554 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
555 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
556 Financial Asset Member hmy:FinancialAssetMember
557 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
558 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
559 Adjustment To Foreign Exchange Risk Exposure Limit Member hmy:AdjustmentToForeignExchangeRiskExposureLimitMember
560 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
561 Risks [member] Member ifrs-full:TypesOfRisksMember
562 Currency risk Member ifrs-full:CurrencyRiskMember
563 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
564 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
565 Derivative financial instruments Member hmy:DerivativeFinancialInstrumentsMember
566 Financial Asset Member hmy:FinancialAssetMember
567 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
568 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
569 Borrowings Member hmy:Borrowings1Member
570 Range [axis] Axis ifrs-full:RangeAxis
571 Ranges [member] Member ifrs-full:RangesMember
572 Bottom of range Member ifrs-full:BottomOfRangeMember
573 Top of range Member ifrs-full:TopOfRangeMember
574 Currency1 [Axis] Axis hmy:Currency1Axis
575 Currency1 [Domain] Member hmy:Currency1Domain
576 South Africa, Rand Member currency:ZAR
577 Papua New Guinea, Kina Member currency:PGK
578 Disclosure of nature and extent of risks arising from financial instruments [line items] LineItems ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
579 Foreign exchange rate risk hedged (as a percent) Concept (Percent) For Period hmy:ForeignCurrencyExchangeNotionalAmountPercentageHedged
580 Foreign exchange risk exposure term Concept (xbrli:durationItemType) For Period hmy:ForeignExchangeRiskExposureTerm
581 Reasonably possible change in risk variable percent Concept (Percent) For Period hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariablePercent
582 Risk exposure Concept (Monetary) As Of ifrs-full:RiskExposureAssociatedWithInstrumentsSharingCharacteristic
583 Reasonably possible increase in risk variable percent Concept (Percent) For Period hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariablePercent
584 Increase by 10%, impact on earnings Concept (Monetary) For Period Credit hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnPreTaxEarnings
585 Reasonably possible decrease in risk variable percent Concept (Percent) For Period hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariablePercent
586 Decrease by 10%, impact on earnings Concept (Monetary) For Period Credit hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnPreTaxEarnings
587 Closing rate Concept (Decimal) As Of ifrs-full:ClosingForeignExchangeRate
588 2440404 - Disclosure - Financial Risk Management - Commodity Price Sensitivity (Details) Network

*

*

 http://www.harmony.co.za/role/FinancialRiskManagementCommodityPriceSensitivityDetails
589 Disclosure of nature and extent of risks arising from financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
590 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
591 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
592 Adjustment to Permitted Level of Cover Member hmy:AdjustmenttoPermittedLevelofCoverMember
593 Types of hedges [axis] Axis ifrs-full:TypesOfHedgesAxis
594 Hedges [member] Member ifrs-full:TypesOfHedgesMember
595 Cash flow hedges Member ifrs-full:CashFlowHedgesMember
596 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
597 Risks [member] Member ifrs-full:TypesOfRisksMember
598 Commodity price risk Member ifrs-full:CommodityPriceRiskMember
599 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
600 Hedging instruments Member ifrs-full:HedgingInstrumentsMember
601 Rand gold hedging contracts Member hmy:RandGoldHedgingContractsMember
602 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
603 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
604 US$ gold hedging contracts Member hmy:USGoldDerivativeContractsMember
605 Silver hedging contracts Member hmy:USSilverDerivativeContractsMember
606 Range [axis] Axis ifrs-full:RangeAxis
607 Ranges [member] Member ifrs-full:RangesMember
608 Bottom of range Member ifrs-full:BottomOfRangeMember
609 Top of range Member ifrs-full:TopOfRangeMember
610 Disclosure of nature and extent of risks arising from financial instruments [line items] LineItems ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
611 Limit of gold production hedged (as a percent) Concept (Percent) For Period hmy:MaximumGoldProductionHedgedasaPercent
612 Limit of silver production hedged (as a percent) Concept (Percent) For Period hmy:MaximumSilverProductionHedgedPercent
613 Production period hedged Concept (xbrli:durationItemType) For Period hmy:ProductionPeriodHedged
614 Reasonably possible change in risk variable percent Concept (Percent) For Period hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariablePercent
615 Reasonably possible increase in risk variable percent Concept (Percent) For Period hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariablePercent
616 Reasonably possible decrease in risk variable percent Concept (Percent) For Period hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariablePercent
617 Increase by 10%, impact on other comprehensive income Concept (Monetary) For Period Credit hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnOtherComprehensiveIncome
618 Decrease by 10%, impact on other comprehensive income Concept (Monetary) For Period Credit hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnOtherComprehensiveIncome
619 Increase by 10%, impact on earnings Concept (Monetary) For Period Credit hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnPreTaxEarnings
620 Decrease by 10%, impact on earnings Concept (Monetary) For Period Credit hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnPreTaxEarnings
621 2440405 - Disclosure - Financial Risk Management - Other Price Risk (Details) Network

*

*

 http://www.harmony.co.za/role/FinancialRiskManagementOtherPriceRiskDetails
622 Disclosure of nature and extent of risks arising from financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
623 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
624 Risks [member] Member ifrs-full:TypesOfRisksMember
625 Other price risk Member ifrs-full:OtherPriceRiskMember
626 Disclosure of nature and extent of risks arising from financial instruments [line items] LineItems ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
627 Reasonably possible decrease in risk variable percent Concept (Percent) For Period hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariablePercent
628 Reasonably possible increase in risk variable percent Concept (Percent) For Period hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariablePercent
629 Increase by 10%, impact on earnings Concept (Monetary) For Period Credit hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnPreTaxEarnings
630 Decrease by 10%, impact on earnings Concept (Monetary) For Period Credit hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnPreTaxEarnings
631 2440406 - Disclosure - Financial Risk Management - Interest Rate Risk (Details) Network

*

*

 http://www.harmony.co.za/role/FinancialRiskManagementInterestRateRiskDetails
632 Disclosure of nature and extent of risks arising from financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
633 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
634 Risks [member] Member ifrs-full:TypesOfRisksMember
635 Interest rate risk Member ifrs-full:InterestRateRiskMember
636 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
637 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
638 Borrowings Member hmy:Borrowings1Member
639 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
640 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
641 Financial Asset Member hmy:FinancialAssetMember
642 Disclosure of nature and extent of risks arising from financial instruments [line items] LineItems ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
643 Reasonably possible change in risk variable percent Concept (Percent) For Period hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariablePercent
644 Reasonably possible increase in risk variable percent Concept (Percent) For Period hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariablePercent
645 Reasonably possible decrease in risk variable percent Concept (Percent) For Period hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariablePercent
646 Increase by 10%, impact on earnings Concept (Monetary) For Period Credit hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnPreTaxEarnings
647 Decrease by 10%, impact on earnings Concept (Monetary) For Period Credit hmy:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnPreTaxEarnings
648 2440407 - Disclosure - Financial Risk Management - Credit Risk (Details) Network

*

*

 http://www.harmony.co.za/role/FinancialRiskManagementCreditRiskDetails
649 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
650 External credit grades [axis] Axis ifrs-full:ExternalCreditGradesAxis
651 Entity's total for external credit grades [member] Member ifrs-full:EntitysTotalForExternalCreditGradesMember
652 AA Plus Member hmy:CreditRatingAAPlusMember
653 AA Member hmy:CreditRatingAAMember
654 AA Minus Member hmy:CreditRatingAAMinusMember
655 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
656 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
657 Investments held by social trust funds Member hmy:RestrictedInvestmentsHeldBySocialTrustFundsMember
658 Cash and cash equivalents Member hmy:CashandCashEquivalents1Member
659 Restricted cash Member hmy:RestrictedCashMember
660 Restricted investments (environmental trusts) Member hmy:RestrictedInvestmentsHeldByEnvironmentalTrustFundsMember
661 Derivative financial assets Member ifrs-full:DerivativesMember
662 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
663 Maximum exposure to credit risk Concept (Monetary) As Of ifrs-full:MaximumExposureToCreditRisk
664 Restricted investments Concept (Monetary) As Of Debit hmy:RestrictedInvestments1
665 2440408 - Disclosure - Financial Risk Management - Liquidity Risk (Details) Network

*

*

 http://www.harmony.co.za/role/FinancialRiskManagementLiquidityRiskDetails
666 Disclosure of maturity analysis for non-derivative financial liabilities [table] Table

*

*

 ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesTable
667 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
668 Risks [member] Member ifrs-full:TypesOfRisksMember
669 Liquidity risk Member ifrs-full:LiquidityRiskMember
670 Maturity [axis] Axis ifrs-full:MaturityAxis
671 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
672 Current Member ifrs-full:NotLaterThanOneYearMember
673 Due between 0 to six months Member hmy:NotLaterThanSixMonthsMember
674 Due between six to 12 months Member ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMember
675 Expiring after one year Member ifrs-full:LaterThanOneYearMember
676 Due between one to two years Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
677 Due between two to five years Member ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
678 Disclosure of maturity analysis for non-derivative financial liabilities [line items] LineItems ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems
679 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesUndiscountedCashFlows
680 Derivative financial liabilities Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilitiesUndiscountedCashFlows
681 Borrowings Concept (Monetary) As Of Credit ifrs-full:BankBorrowingsUndiscountedCashFlows
682 Financial liabilities Concept (Monetary) As Of Credit ifrs-full:NonderivativeFinancialLiabilitiesUndiscountedCashFlows
683 2440409 - Disclosure - Financial Risk Management - Capital Risk Management (Details) Network

*

*

 http://www.harmony.co.za/role/FinancialRiskManagementCapitalRiskManagementDetails
684 Implied Table Table

*

*

 implied:Table
685 Financial Instruments [Abstract] Abstract hmy:FinancialInstrumentsAbstract
686 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
687 Borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
688 Net debt Concept (Monetary) As Of Credit ifrs-full:NetDebt
689 2440410 - Disclosure - Financial Risk Management - Fair Value Determination for Financial Assets and Liabilities (Details) Network

*

*

 http://www.harmony.co.za/role/FinancialRiskManagementFairValueDeterminationForFinancialAssetsAndLiabilitiesDetails
690 Disclosure of fair value measurement of assets [table] Table

*

*

 ifrs-full:DisclosureOfFairValueMeasurementOfAssetsTable
691 Classes Of Net Derivative Assets Liabilities [Axis] Axis hmy:ClassesOfNetDerivativeAssetsLiabilitiesAxis
692 Classes Of Net Derivative Assets Liabilities [Domain] Member hmy:ClassesOfNetDerivativeAssetsLiabilitiesDomain
693 Forex hedging contracts Member hmy:ForeignExchangeHedgingContractsMember
694 Rand gold hedging contracts Member hmy:RandGoldHedgingContractsMember
695 US$ gold hedging contracts Member hmy:USGoldDerivativeContractsMember
696 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
697 Assets [member] Member ifrs-full:ClassesOfAssetsMember
698 Restricted investments Member hmy:RestrictedInvestmentsMember
699 Investment in financial assets Member hmy:InvestmentinFinancialAssetsMember
700 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
701 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
702 Level 3 of fair value hierarchy Member ifrs-full:Level3OfFairValueHierarchyMember
703 Level 2 Member ifrs-full:Level2OfFairValueHierarchyMember
704 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
705 Hedging instruments Member ifrs-full:HedgingInstrumentsMember
706 Rand gold hedging contracts Member hmy:RandGoldHedgingContractsMember
707 Disclosure of fair value measurement of assets [line items] LineItems ifrs-full:DisclosureOfFairValueMeasurementOfAssetsLineItems
708 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
709 Net assets (liabilities) derivative Concept (Monetary) As Of Debit hmy:NetDerivativeAssetsLiabilities
710 2441402 - Disclosure - Revenue (Details) Network

*

*

 http://www.harmony.co.za/role/RevenueDetails
711 Implied Table Table

*

*

 implied:Table
712 Revenue [abstract] Abstract ifrs-full:RevenueAbstract
713 Gold sales Concept (Monetary) For Period Credit ifrs-full:RevenueFromSaleOfGold
714 Hedging gain Concept (Monetary) For Period Credit hmy:RealisedGainLossOnHedgingInstrumentEffectivePortion
715 Total revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
716 2442402 - Disclosure - Cost of Sales - Disclosure of cost of sales (Details) Network

*

*

 http://www.harmony.co.za/role/CostOfSalesDisclosureOfCostOfSalesDetails
717 Implied Table Table

*

*

 implied:Table
718 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
719 Production costs Concept (Monetary) For Period Debit hmy:ProductionCosts1
720 Amortisation and depreciation of mining assets Concept (Monetary) For Period Debit hmy:DepreciationAndAmortisationExpenseOfMiningAssets
721 Amortisation and depreciation of assets other than mining assets Concept (Monetary) For Period Debit hmy:DepreciationAndAmortisationExpenseOfAssetsOtherThanMiningAssets
722 Rehabilitation expenditure/(credit) Concept (Monetary) For Period Debit hmy:RehabilitationExpenditureCredit
723 Care and maintenance costs of restructured shafts Concept (Monetary) For Period Debit hmy:CareAndMaintenanceCostsOfRestructuredShafts
724 Employment termination and restructuring costs Concept (Monetary) For Period Debit hmy:ExpenseofRestructuringActivitiesandTerminationBenefitsExpense
725 Share-based payments Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
726 Impairment of assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
727 Other Concept (Monetary) For Period Debit ifrs-full:MiscellaneousOtherOperatingExpense
728 Total cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
729 2442403 - Disclosure - Cost of Sales - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/CostOfSalesNarrativeDetails
730 Disclosure Of Cost Of Sales [Table] Table

*

*

 hmy:DisclosureOfCostOfSalesTable
731 Individual assets or cash-generating units [axis] Axis ifrs-full:IndividualAssetsOrCashgeneratingUnitsAxis
732 Entity's total for individual assets or cash-generating units [member] Member ifrs-full:EntitysTotalForIndividualAssetsOrCashgeneratingUnitsMember
733 Moab Khotsong Member hmy:MoabKhotsongMember
734 Hidden Valley Member hmy:HiddenValleyMember
735 Disclosure Of Cost Of Sales [Line Items] LineItems hmy:DisclosureOfCostOfSalesLineItems
736 Production costs Concept (Monetary) For Period Debit hmy:ProductionCosts1
737 Change in production costs Concept (Monetary) For Period Debit hmy:ChangeInProductionCostsYearOnYear
738 Rehabilitation spend Concept (Monetary) For Period Debit hmy:DecommissioningRestorationAndRehabilitationExpenditure
739 Employment termination and restructuring costs Concept (Monetary) For Period Debit hmy:ExpenseofRestructuringActivitiesandTerminationBenefitsExpense
740 2442404 - Disclosure - Cost of Sales - Disclosure of production costs (Details) Network

*

*

 http://www.harmony.co.za/role/CostOfSalesDisclosureOfProductionCostsDetails
741 Implied Table Table

*

*

 implied:Table
742 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
743 Labour costs, including contractors Concept (Monetary) For Period Debit hmy:WagesandSalariesandContractorExpense
744 Consumables Concept (Monetary) For Period Debit ifrs-full:RawMaterialsAndConsumablesUsed
745 Water and electricity Concept (Monetary) For Period Debit ifrs-full:UtilitiesExpense
746 Insurance Concept (Monetary) For Period Debit ifrs-full:InsuranceExpense
747 Transportation Concept (Monetary) For Period Debit ifrs-full:TransportationExpense
748 Change in inventory Concept (Monetary) For Period Debit ifrs-full:ChangesInInventoriesOfFinishedGoodsAndWorkInProgress
749 Capitalisation of mine development costs Concept (Monetary) For Period Credit hmy:CapitalisationOfMineDevelopmentCosts
750 Stripping activities Concept (Monetary) For Period Credit hmy:StrippingActivities
751 By-product sales Concept (Monetary) For Period Credit hmy:ByProductSales
752 Royalty expense Concept (Monetary) For Period Debit ifrs-full:RoyaltyExpense
753 Other Concept (Monetary) For Period Debit hmy:OtherProductionCosts
754 Total production costs Concept (Monetary) For Period Debit hmy:ProductionCosts1
755 2442405 - Disclosure - Cost of Sales - Disclosure of impairment of assets (Details) Network

*

*

 http://www.harmony.co.za/role/CostOfSalesDisclosureOfImpairmentOfAssetsDetails
756 Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [table] Table

*

*

 ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitTable
757 Individual assets or cash-generating units [axis] Axis ifrs-full:IndividualAssetsOrCashgeneratingUnitsAxis
758 Entity's total for individual assets or cash-generating units [member] Member ifrs-full:EntitysTotalForIndividualAssetsOrCashgeneratingUnitsMember
759 Tshepong operations Member hmy:TshepongMember
760 Doornkop Member hmy:DoornkopMember
761 Kusasalethu Member hmy:KusasalethuMember
762 Target 1 Member hmy:Target1Member
763 Joel Member hmy:JoelMember
764 Unisel Member hmy:UniselMember
765 Masimong Member hmy:MasimongMember
766 Target North Member hmy:TargetNorthMember
767 Hidden Valley Member hmy:HiddenValleyMember
768 Other mining assets Member hmy:OtherMiningAssetsMember
769 Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] LineItems ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitLineItems
770 Impairment/(reversal of impairment) of assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
771 Recoverable amount Concept (Monetary) As Of Debit ifrs-full:RecoverableAmountOfAssetOrCashgeneratingUnit
772 2443402 - Disclosure - Gains on Derivatives (Details) Network

*

*

 http://www.harmony.co.za/role/GainsOnDerivativesDetails
773 Implied Table Table

*

*

 implied:Table
774 Gains (losses) on change in fair value of derivatives [abstract] Abstract ifrs-full:GainsLossesOnChangeInFairValueOfDerivativesAbstract
775 Derivative gain Concept (Monetary) For Period Credit hmy:GainLossOnDerivativesFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLoss
776 Hedge ineffectiveness Concept (Monetary) For Period Credit ifrs-full:GainLossOnHedgeIneffectivenessRecognisedInProfitOrLoss
777 Day one loss amortisation Concept (Monetary) For Period Debit hmy:DerivativeDayOneLossAmortisation
778 Total gains on derivatives Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnChangeInFairValueOfDerivatives
779 2444402 - Disclosure - Other Operating Expenses (Details) Network

*

*

 http://www.harmony.co.za/role/OtherOperatingExpensesDetails
780 Implied Table Table

*

*

 implied:Table
781 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
782 Profit on sale of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:GainsOnDisposalsOfPropertyPlantAndEquipment
783 Social investment expenditure Concept (Monetary) For Period Debit hmy:SocialInvestmentExpenditure
784 Loss on scrapping of property, plant and equipment Concept (Monetary) For Period Debit hmy:LossesonDerecognitionofPropertyPlantandEquipment
785 Foreign exchange translation Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
786 Silicosis settlement provision/(reversal of provision) Concept (Monetary) For Period Credit hmy:AdjustmentOtherProvisions
787 Provision/(reversal of provision) for ARM BEE Loan Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossLoansAndAdvances
788 Other (income)/expenses - net Concept (Monetary) For Period Credit hmy:MiscellaneousOtherOperatingIncomeExpense
789 Total other operating expenses Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
790 2445402 - Disclosure - Operating Profit/(Loss) (Details) Network

*

*

 http://www.harmony.co.za/role/OperatingProfitLossDetails
791 Implied Table Table

*

*

 implied:Table
792 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
793 Auditor's remuneration for audit services Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForAuditServices
794 Total auditor's remuneration Concept (Monetary) For Period Debit ifrs-full:AuditorsRemuneration
795 2447402 - Disclosure - Investment Income (Details) Network

*

*

 http://www.harmony.co.za/role/InvestmentIncomeDetails
796 Implied Table Table

*

*

 implied:Table
797 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
798 Interest income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
799 Loans and receivables Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnLoansAndReceivables
800 Held-to-maturity investments Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnHeldtomaturityInvestments
801 Cash and cash equivalents Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnCashAndCashEquivalents
802 Net gain on financial instruments Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss
803 Total investment income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
804 2449402 - Disclosure - Taxation - Disclosure of Taxation Credit/(Expense) (Details) Network

*

*

 http://www.harmony.co.za/role/TaxationDisclosureOfTaxationCreditExpenseDetails
805 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
806 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
807 Products and services [member] Member ifrs-full:ProductsAndServicesMember
808 Mining Products Member hmy:MiningProductsMember
809 Non-Mining Services Member hmy:NonMiningProductsMember
810 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
811 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
812 South Africa Member ifrs-full:CountryOfDomicileMember
813 Australian entities and PNG operation Member hmy:AustralianEntitiesAndPNGOperationMember
814 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
815 Current tax (expense) income and adjustments of prior periods Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
816 Current year tax Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncome
817 Prior year tax Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
818 Deferred tax Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncome
819 Deferred tax - current year Concept (Monetary) For Period Debit hmy:DeferredTaxExpenseIncomeCurrent
820 Total taxation (expense)/credit Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
821 Revenue exempt from taxation (as a percent) Concept (Percent) For Period hmy:RevenueExemptFromTaxationPercentage
822 Applicable taxation rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
823 2449403 - Disclosure - Taxation - Disclosure of Major Items Causing the Income Tax Provision to Differ from the South African Mining Statutory Tax Rate (Details) Network

*

*

 http://www.harmony.co.za/role/TaxationDisclosureOfMajorItemsCausingIncomeTaxProvisionToDifferFromSouthAfricanMiningStatutoryTaxRateDetails
824 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
825 Consolidated Entities1 [Axis] Axis hmy:ConsolidatedEntities1Axis
826 Consolidated Entities1 [Domain] Member hmy:ConsolidatedEntities1Domain
827 Parent Company Member hmy:ParentCompany1Member
828 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
829 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
830 SA taxation Member ifrs-full:CountryOfDomicileMember
831 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
832 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
833 Freegold Member hmy:FreegoldMember
834 Randfontein Member hmy:RandfonteinEstatesLimitedMember
835 Avgold Member hmy:AvgoldLimitedMember
836 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
837 Mining statutory tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
838 Tax on net profit/loss at the mining statutory tax rate Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
839 Non-allowable deductions Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
840 Gain on bargain purchase Concept (Monetary) For Period Debit hmy:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLossGainOnBargainPurchase
841 Share-based payments Concept (Monetary) For Period Debit hmy:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLossShareBasedPayments
842 Impairment of assets Concept (Monetary) For Period Debit hmy:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLossImpairmentofAssets
843 Exploration expenditure Concept (Monetary) For Period Debit hmy:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLossExplorationExpenditure
844 Finance costs Concept (Monetary) For Period Debit hmy:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLossFinanceCosts
845 Other Concept (Monetary) For Period Debit hmy:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLossOther
846 Difference between effective mining tax rate and statutory mining rate on mining income Concept (Monetary) For Period Debit hmy:TaxEffectOfDifferenceBetweenEffectiveMiningTaxRateAndStatutoryMiningRateOnMiningIncome
847 Difference between non-mining tax rate and statutory mining rate on non-mining income Concept (Monetary) For Period Debit hmy:TaxEffectOfDifferenceBetweenNonMiningTaxRateAndStatutoryMiningRateOnNonMiningIncome
848 Effect on temporary differences due to changes in effective tax rates Concept (Monetary) For Period Debit hmy:TaxEffectFromChangeInDeferredTaxRate
849 Prior year adjustment Concept (Monetary) For Period Debit hmy:TaxEffectOfPriorYearIncomeTaxes
850 Capital allowances, sale of business and other rate differences Concept (Monetary) For Period Debit hmy:TaxEffectOfCapitalAllowancesSaleOfBusinessAndOtherRateDifferences
851 Derecognition of deferred tax asset Concept (Monetary) For Period Debit hmy:TaxEffectOfDerecognitionOfDeferredTaxAsset
852 Deferred tax asset not recognised Concept (Monetary) For Period Debit hmy:TaxEffectOfDeferredTaxAssetNotRecognised
853 Total taxation (expense)/credit Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
854 Average effective tax rate Concept (Percent) For Period ifrs-full:AverageEffectiveTaxRate
855 Deferred tax rate Concept (Percent) For Period hmy:DeferredTaxRate
856 Deferred tax asset not recognised as a result of foreign exchange losses Concept (Monetary) As Of ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
857 2449404 - Disclosure - Taxation - Analysis of Deferred Tax Assets and Liabilities (Details) Network

*

*

 http://www.harmony.co.za/role/TaxationAnalysisOfDeferredTaxAssetsAndLiabilitiesDetails
858 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
859 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
860 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
861 Deferred tax assets Member hmy:DeferredTaxAssetsGrossMember
862 Deferred tax asset to be recovered after more than 12 months Member hmy:DeferredTaxAssetToBeRecoveredAfterMoreThan12MonthsGrossMember
863 Deferred tax asset to be recovered within 12 months Member hmy:DeferredTaxAssetToBeRecoveredWithin12MonthsGrossMember
864 Deferred tax liabilities Member hmy:DeferredTaxLiabilitiesGrossMember
865 Deferred tax liability to be recovered after more than 12 months Member hmy:DeferredTaxLiabilityToBeRecoveredAfterMoreThan12MonthsGrossMember
866 Deferred tax liability to be recovered within 12 months Member hmy:DeferredTaxLiabilityToBeRecoveredWithin12MonthsGrossMember
867 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
868 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
869 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
870 Net deferred tax liability Concept (Monetary) As Of Credit ifrs-full:NetDeferredTaxLiabilities
871 2449405 - Disclosure - Taxation - Disclosure of Deferred Tax Liabilities and Assets on the Balance Sheet (Details) Network

*

*

 http://www.harmony.co.za/role/TaxationDisclosureOfDeferredTaxLiabilitiesAndAssetsOnBalanceSheetDetails
872 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
873 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
874 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
875 Gross deferred tax liabilities Member hmy:DeferredTaxLiabilitiesGrossMember
876 Amortisation and depreciation Member hmy:AmortisationAndDepreciationOfDeferredTaxMember
877 Derivative assets Member hmy:DerivativeAssetsTemporaryDifferencesMember
878 Gross deferred tax assets Member hmy:DeferredTaxAssetsGrossMember
879 Unredeemed capital expenditure Member hmy:UnredeemedCapitalExpendituresRelatedToTemporaryDifferencesDeferredTaxMember
880 Provisions, including non-current provisions Member hmy:ExpenseProvisionsRelatedToTemporaryDifferencesDeferredTaxMember
881 Tax losses Member ifrs-full:UnusedTaxLossesMember
882 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
883 Gross deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
884 Gross deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
885 Net deferred tax liability Concept (Monetary) As Of Credit ifrs-full:NetDeferredTaxLiabilities
886 2449406 - Disclosure - Taxation - Disclosure of Movement (Details) Network

*

*

 http://www.harmony.co.za/role/TaxationDisclosureOfMovementDetails
887 Implied Table Table

*

*

 implied:Table
888 Income Taxes [Abstract] Abstract hmy:IncomeTaxesAbstract
889 Reconciliation of changes in deferred tax liability (asset) Abstract ifrs-full:ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract
890 Balance at beginning of year Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
891 Credit per income statement Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
892 Tax directly charged to other comprehensive income Concept (Monetary) For Period ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
893 Moab Khotsong acquisition Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset
894 Translation Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset
895 Balance at end of year Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
896 2449407 - Disclosure - Taxation - Disclosure of Potential Future Tax Deductions (Details) Network

*

*

 http://www.harmony.co.za/role/TaxationDisclosureOfPotentialFutureTaxDeductionsDetails
897 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
898 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
899 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
900 Avgold Member hmy:AvgoldLimitedMember
901 Randfontein Member hmy:RandfonteinEstatesLimitedMember
902 Moab Khotsong Member hmy:MoabKhotsongMember
903 Hidden Valley Member hmy:HiddenValleyMember
904 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
905 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
906 Unredeemed capital expenditure available for utilisation against future mining taxable income Member hmy:UnredeemedCapitalExpendituresRelatedToTemporaryDifferencesDeferredTaxMember
907 Tax losses carried forward utilisable against mining taxable income Member ifrs-full:UnusedTaxLossesMember
908 Capital Gains Tax (CGT) losses available to be utilised against future CGT gains Member hmy:CGTLossesRelatedToTemporaryDifferencesMember
909 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
910 Potential future tax deductions Concept (Monetary) As Of Debit hmy:TemporaryDifferencesCarryforwards
911 Amount of deferred tax not recognised, deductible temporary differences Concept (Monetary) As Of Debit hmy:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognisedAmountOfDeferredTaxAsset
912 Deductible temporary differences for which no deferred tax asset is recognised Concept (Monetary) As Of ifrs-full:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised
913 2450402 - Disclosure - Earnings/(Loss) Per Share - Disclosure of Basic Earnings/(Loss) Per Share (Details) Network

*

*

 http://www.harmony.co.za/role/EarningsLossPerShareDisclosureOfBasicEarningslossPerShareDetails
914 Implied Table Table

*

*

 implied:Table
915 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
916 Ordinary shares in issue (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
917 Adjustment for weighted number of ordinary shares in issue (in shares) Concept (Shares) For Period hmy:NumberOfSharesIssuedAdjustmentForWeightedAverageNumberOfSharesIssued
918 Weighted number of ordinary shares in issue (in shares) Concept (Shares) For Period hmy:NumberOfSharesIssuedNumberOfSharesIssuedAfterAdjustmentForWeightedAverageNumberOfSharesIssued
919 Treasury shares (in shares) Concept (Shares) For Period hmy:AdjustmentForWeightedNumberOfTreasuryShares
920 Basic weighted average number of ordinary shares in issue (in shares) Concept (Shares) For Period ifrs-full:WeightedAverageShares
921 Total net earnings/(loss) attributable to shareholders Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
922 Total basic earnings/(loss) per share (in dollars per share) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
923 2450403 - Disclosure - Earnings/(Loss) Per Share - Disclosure of Diluted Earnings/(Loss) Per Share (Details) Network

*

*

 http://www.harmony.co.za/role/EarningsLossPerShareDisclosureOfDilutedEarningslossPerShareDetails
924 Implied Table Table

*

*

 implied:Table
925 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
926 Weighted average number of ordinary shares in issue (in shares) Concept (Shares) For Period ifrs-full:WeightedAverageShares
927 Potential ordinary shares (in shares) Concept (Shares) For Period ifrs-full:DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares
928 Weighted average number of ordinary shares for diluted earnings per share (in shares) Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
929 Total diluted earnings/(loss) per share (in dollars per share) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
930 2450404 - Disclosure - Earnings/(Loss) Per Share - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/EarningsLossPerShareNarrativeDetails
931 Implied Table Table

*

*

 implied:Table
932 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
933 Dividend per share (in dollars per share) Concept (Share) For Period ifrs-full:DividendsPaidOrdinarySharesPerShare
934 Dividend declared Concept (Monetary) For Period Debit ifrs-full:DividendsPaidOrdinaryShares
935 2450405 - Disclosure - Earnings/(Loss) Per Share - Disclosure of Dividends Declared (Details) Network

*

*

 http://www.harmony.co.za/role/EarningsLossPerShareDisclosureOfDividendsDeclaredDetails
936 Implied Table Table

*

*

 implied:Table
937 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
938 Dividend declared Concept (Monetary) For Period Debit ifrs-full:DividendsPaidOrdinaryShares
939 Dividend per share (in dollars per share) Concept (Share) For Period ifrs-full:DividendsPaidOrdinarySharesPerShare
940 2451402 - Disclosure - Acquisitions and Business Combinations - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/AcquisitionsAndBusinessCombinationsNarrativeDetails
941 Disclosure of detailed information about business combination [table] Table

*

*

 ifrs-full:DisclosureOfBusinessCombinationsTable
942 Joint operations [axis] Axis ifrs-full:JointOperationsAxis
943 Entity's total for joint operations [member] Member ifrs-full:EntitysTotalForJointOperationsMember
944 HVJV Member hmy:HVJVMember
945 Newcrest PNG 1 Ltd Member hmy:NewcrestPNG1LtdMember
946 Range [axis] Axis ifrs-full:RangeAxis
947 Ranges [member] Member ifrs-full:RangesMember
948 Bottom of range Member ifrs-full:BottomOfRangeMember
949 Top of range Member ifrs-full:TopOfRangeMember
950 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
951 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
952 Moab Khotsong Member hmy:MoabKhotsongMember
953 Newcrest PNG 1 Ltd Member hmy:NewcrestPNG1LtdMember
954 Hidden Valley Member hmy:HiddenValleyMember
955 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
956 Contributed revenue of acquiree Concept (Monetary) For Period Credit ifrs-full:RevenueOfAcquiree
957 Profit from acquiree Concept (Monetary) For Period Credit ifrs-full:ProfitLossOfAcquiree
958 Increase to revenue had acquisition occurred at beginning of period Concept (Monetary) For Period Credit hmy:RevenueOfAcquireesAsIfCombinationOccurredAtBeginningOfPeriod
959 Increase to profit (loss) had acquisition occurred at beginning of period Concept (Monetary) For Period Credit hmy:ProfitLossOfAcquireesAsIfCombinationOccurredAtBeginningOfPeriod
960 Acquisition related costs Concept (Monetary) For Period Debit ifrs-full:AcquisitionrelatedCostsRecognisedAsExpenseForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination
961 Business integration expense Concept (Monetary) For Period Debit hmy:BusinessCombinationIntegrationRelatedExpense
962 Discount rate Concept (Percent) As Of ifrs-full:DescriptionOfDiscountRatesAppliedToCashFlowProjections
963 Foreign exchange rate assumption Concept (Decimal) As Of hmy:AverageForeignExchangeRateAssumption
964 Gold price assumption Concept (Decimal) As Of hmy:ClosingPriceOfGoldAssumption
965 Uranium price assumption Concept (Decimal) As Of hmy:ClosingPriceofUraniumAssumption
966 Proportion of ownership interest in joint venture (as a percent) Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointOperation
967 Interest acquired (as a percent) Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
968 Cash transferred Concept (Monetary) As Of Credit ifrs-full:CashTransferred
969 Once off contribution Concept (Monetary) As Of Credit hmy:PaymentsForFutureEstimatedEnvironmentalLiability1
970 Gain on bargain purchase Concept (Monetary) For Period Credit ifrs-full:GainRecognisedInBargainPurchaseTransaction
971 Fair value of net identifiable assets acquired Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
972 2451403 - Disclosure - Acquisitions and Business Combinations - Fair Value of Assets Acquired and Liabilities Assumed (Details) Network

*

*

 http://www.harmony.co.za/role/AcquisitionsAndBusinessCombinationsFairValueOfAssetsAcquiredAndLiabilitiesAssumedDetails
973 Disclosure of detailed information about business combination [table] Table

*

*

 ifrs-full:DisclosureOfBusinessCombinationsTable
974 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
975 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
976 Moab Khotsong Member hmy:MoabKhotsongMember
977 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
978 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate
979 Environmental rehabilitation trust funds Concept (Monetary) As Of Debit hmy:RestrictedInvestmentsRecognisedasofAcquisitionDate
980 Inventories Concept (Monetary) As Of Debit ifrs-full:InventoryRecognisedAsOfAcquisitionDate
981 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilitiesRecognisedAsOfAcquisitionDate
982 Provision for environmental rehabilitation Concept (Monetary) As Of Credit hmy:ProvisionForDecommissioningRestorationAndRehabilitationCostsRecognisedAsOfAcquisitionDate
983 Retirement benefit obligation Concept (Monetary) As Of Credit hmy:RetirementBenefitObligationRecognisedasofAcquisitionDate
984 KOSH decant provision Concept (Monetary) As Of Credit hmy:GroundwaterPollutionProvisionRecognisedasofAcquisitionDate
985 Leave liabilities Concept (Monetary) As Of Credit hmy:LeaveLiabilitiesRecognisedasofAcquisitionDate
986 Other payables Concept (Monetary) As Of Credit hmy:OtherPayablesRecognisedAsOfAcquisitionDate
987 Fair value of net identifiable assets acquired Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
988 2451404 - Disclosure - Acquisitions and Business Combinations - Disclosure of Goodwill Acquired (Details) Network

*

*

 http://www.harmony.co.za/role/AcquisitionsAndBusinessCombinationsDisclosureOfGoodwillAcquiredDetails
989 Disclosure of detailed information about business combination [table] Table

*

*

 ifrs-full:DisclosureOfBusinessCombinationsTable
990 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
991 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
992 Moab Khotsong Member hmy:MoabKhotsongMember
993 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
994 Cash transferred Concept (Monetary) As Of Credit ifrs-full:CashTransferred
995 Fair value of net identifiable assets acquired Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
996 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
997 2451405 - Disclosure - Acquisitions and Business Combinations - Fair Value of Assets Acquired and Liabilities Assumed Hidden Valley (Details) Network

*

*

 http://www.harmony.co.za/role/AcquisitionsAndBusinessCombinationsFairValueOfAssetsAcquiredAndLiabilitiesAssumedHiddenValleyDetails
998 Disclosure of detailed information about business combination [table] Table

*

*

 ifrs-full:DisclosureOfBusinessCombinationsTable
999 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
1000 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
1001 HVJV Member hmy:HVJVMember
1002 Newcrest PNG 1 Ltd Member hmy:NewcrestPNG1LtdMember
1003 Hidden Valley Member hmy:HiddenValleyMember
1004 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
1005 Property, plant and equipment, Previously held interest Concept (Monetary) As Of Debit hmy:PropertyPlantandEquipmentAcquisitionDateFairValueofEquityInterestinAcquireeHeldbyAcquirerImmediatelyBeforeAcquisitionDate
1006 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate
1007 Total property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1008 Inventories (current), Previously held interest Concept (Monetary) As Of Debit hmy:InventoryAcquisitionDateFairValueofEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisitionDate
1009 Inventories, Acquired interest Concept (Monetary) As Of Debit ifrs-full:InventoryRecognisedAsOfAcquisitionDate
1010 Total inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
1011 Trade and other receivables (current), Previously held interest Concept (Monetary) As Of Debit hmy:TradeandOtherCurrentReceivablesAcquisitionDateFairValueofEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisition
1012 Trade and other receivables (current), Acquired interest Concept (Monetary) As Of Debit hmy:TradeAndOtherReceivablesRecognisedAsOfAcquisitionDate
1013 Total current trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
1014 Cash and cash equivalents, Previously held interest Concept (Monetary) As Of Debit hmy:CashandCashEquivalentsAcquisitionDateFairValueofEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisition
1015 Cash and cash equivalents, Acquired interest Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsRecognisedAsOfAcquisitionDate
1016 Total cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1017 Provision for environmental rehabilitation, Previously held interest Concept (Monetary) As Of Credit hmy:ProvisionForDecommissioningRestorationAndRehabilitationCostsAcquisitionDateFairValueofEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisition
1018 Provision for environmental rehabilitation, Acquired interest Concept (Monetary) As Of Credit hmy:ProvisionForEnvironmentalRehabilitationRecognisedAsOfAcquisitionDate
1019 Total provision for environmental rehabilitation Concept (Monetary) As Of Credit ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCosts
1020 Trade and other payables (current), Previously held interest Concept (Monetary) As Of Credit hmy:TradeAndOtherPayablesCurrentAcquisitionDateFairValueofEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisition
1021 Trade and other payables (current), Acquired interest Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesRecognisedAsOfAcquisitionDate
1022 Total trade and other payables (current) Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
1023 Total, Previously held interest Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisitionDate
1024 Total, Acquired interest Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
1025 Total Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
1026 Less fair value of previously held interest Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisitionDate
1027 Fair value of net identifiable assets acquired Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
1028 2452402 - Disclosure - Property, Plant and Equipment - Disclosure of Property, Plant and Equipment (Details) Network

*

*

 http://www.harmony.co.za/role/PropertyPlantAndEquipmentDisclosureOfPropertyPlantAndEquipmentDetails
1029 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1030 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1031 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1032 Mining assets Member ifrs-full:MiningAssetsMember
1033 Mining assets under construction Member ifrs-full:ConstructionInProgressMember
1034 Undeveloped properties Member hmy:UndevelopedPropertiesMember
1035 Other non-mining assets Member hmy:OtherNonMiningAssetsMember
1036 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1037 Total property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1038 2452403 - Disclosure - Property, Plant and Equipment - Mining assets (Narrative) (Details) Network

*

*

 http://www.harmony.co.za/role/PropertyPlantAndEquipmentMiningAssetsNarrativeDetails
1039 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1040 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1041 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1042 Mining assets Member ifrs-full:MiningAssetsMember
1043 Other non-mining assets Member hmy:OtherNonMiningAssetsMember
1044 Assets under construction Member ifrs-full:ConstructionInProgressMember
1045 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
1046 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
1047 Tshepong Member hmy:TshepongMember
1048 Moab Khotsong Member hmy:MoabKhotsongMember
1049 Hidden Valley Member hmy:HiddenValleyMember
1050 Range [axis] Axis ifrs-full:RangeAxis
1051 Ranges [member] Member ifrs-full:RangesMember
1052 Bottom of range Member ifrs-full:BottomOfRangeMember
1053 Top of range Member ifrs-full:TopOfRangeMember
1054 Scenario1 [Axis] Axis hmy:Scenario1Axis
1055 Scenario1 [Domain] Member hmy:Scenario1Domain
1056 Had the group only used proved and probable reserves in its calculations Member hmy:ProForma1Member
1057 Individual assets or cash-generating units [axis] Axis ifrs-full:IndividualAssetsOrCashgeneratingUnitsAxis
1058 Entity's total for individual assets or cash-generating units [member] Member ifrs-full:EntitysTotalForIndividualAssetsOrCashgeneratingUnitsMember
1059 Tshepong Member hmy:TshepongMember
1060 Hidden Valley Member hmy:HiddenValleyMember
1061 South African operations Member hmy:SouthAfricanOperationsMember
1062 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1063 Depreciation expense Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
1064 Post-tax real discount rate Concept (Percent) As Of ifrs-full:DescriptionOfDiscountRatesAppliedToCashFlowProjections
1065 Life-of-mine plans (term) Concept (xbrli:durationItemType) For Period hmy:MinimumLifeOfAssetAppliedToCashFlowProjections
1066 Fair value of property, plant and equipment acquired Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate
1067 Ownership obtained (as a percent) Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
1068 Derecognition of property, plant and equipment Concept (Monetary) For Period Credit hmy:DecreaseThroughScrappingOfAssetsPropertyPlantAndEquipment
1069 Stripping activities Concept (Monetary) As Of Debit hmy:CapitalisedStrippingCostsBalance
1070 Depreciation expense, capitalised stripping costs Concept (Monetary) For Period Debit hmy:DepreciationExpenseCapitalisedStrippingCosts
1071 Transferred to mining assets Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersFromConstructionInProgressPropertyPlantAndEquipment
1072 2452404 - Disclosure - Property, Plant and Equipment - Disclosure of Gold Price, Silver Price and Exchange Rates Assumptions (Details) Network

*

*

 http://www.harmony.co.za/role/PropertyPlantAndEquipmentDisclosureOfGoldPriceSilverPriceAndExchangeRatesAssumptionsDetails
1073 Implied Table Table

*

*

 implied:Table
1074 Property, plant and equipment [abstract] Abstract ifrs-full:PropertyPlantAndEquipmentAbstract
1075 Gold price (in USD per oz and R/kg) Concept (Decimal) As Of hmy:ClosingPriceOfGoldAssumption
1076 Silver price (in USD per oz) Concept (Decimal) As Of hmy:ClosingPriceOfSilverAssumption
1077 Exchange rate (R/USD and PGK/USD) Concept (Decimal) As Of hmy:AverageForeignExchangeRateAssumption
1078 2452405 - Disclosure - Property, Plant and Equipment - Disclosure of Gold Resource Value Assumptions (Details) Network

*

*

 http://www.harmony.co.za/role/PropertyPlantAndEquipmentDisclosureOfGoldResourceValueAssumptionsDetails
1079 Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [table] Table

*

*

 ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitTable
1080 Individual assets or cash-generating units [axis] Axis ifrs-full:IndividualAssetsOrCashgeneratingUnitsAxis
1081 Entity's total for individual assets or cash-generating units [member] Member ifrs-full:EntitysTotalForIndividualAssetsOrCashgeneratingUnitsMember
1082 South Africa Member hmy:SouthAfricanOperationsMember
1083 Hidden Valley Member hmy:HiddenValleyMember
1084 Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] LineItems ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitLineItems
1085 Measured Concept (Decimal) As Of hmy:GoldResourceValueAssumptionMeasured
1086 Indicated Concept (Decimal) As Of hmy:GoldResourceValueAssumptionIndicated
1087 Inferred Concept (Decimal) As Of hmy:GoldResourceValueAssumptionInferred
1088 2452406 - Disclosure - Property, Plant and Equipment - Disclosure of Sensitivity Analysis - Impairment of Assets (Details) Network

*

*

 http://www.harmony.co.za/role/PropertyPlantAndEquipmentDisclosureOfSensitivityAnalysisImpairmentOfAssetsDetails
1089 Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [table] Table

*

*

 ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitTable
1090 Individual assets or cash-generating units [axis] Axis ifrs-full:IndividualAssetsOrCashgeneratingUnitsAxis
1091 Entity's total for individual assets or cash-generating units [member] Member ifrs-full:EntitysTotalForIndividualAssetsOrCashgeneratingUnitsMember
1092 Tshepong operations Member hmy:TshepongMember
1093 Kusasalethu Member hmy:KusasalethuMember
1094 Hidden Valley Member hmy:HiddenValleyMember
1095 Target 1 Member hmy:Target1Member
1096 Doornkop Member hmy:DoornkopMember
1097 Masimong Member hmy:MasimongMember
1098 Moab Khotsong Member hmy:MoabKhotsongMember
1099 Joel Member hmy:JoelMember
1100 Target 3 Member hmy:Target3Member
1101 Other surface operations Member hmy:OtherSurfaceOperationsMember
1102 Target North Member hmy:TargetNorthMember
1103 Unisel Member hmy:UniselMember
1104 Bambanani Member hmy:BambananiMember
1105 Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] LineItems ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitLineItems
1106 Additional impairment Concept (Monetary) As Of Debit hmy:PropertyPlantandEquipmentImpactof10PercentDecreaseinCommodityPriceImpairment
1107 Reversal of impairment Concept (Monetary) As Of Credit hmy:PropertyPlantandEquipmentImpactof10PercentIncreaseinCommodityPriceImpairmentReversal
1108 2452407 - Disclosure - Property, Plant and Equipment - Disclosure of Movement in Property, Plant and Equipment (Details) Network

*

*

 http://www.harmony.co.za/role/PropertyPlantAndEquipmentDisclosureOfMovementInPropertyPlantAndEquipmentDetails
1109 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1110 Individual assets or cash-generating units [axis] Axis ifrs-full:IndividualAssetsOrCashgeneratingUnitsAxis
1111 Entity's total for individual assets or cash-generating units [member] Member ifrs-full:EntitysTotalForIndividualAssetsOrCashgeneratingUnitsMember
1112 Hidden Valley Member hmy:HiddenValleyMember
1113 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
1114 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
1115 Hidden Valley Member hmy:HiddenValleyMember
1116 Moab Khotsong Member hmy:MoabKhotsongMember
1117 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1118 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1119 Mining assets Member ifrs-full:MiningAssetsMember
1120 Mining assets under construction Member ifrs-full:ConstructionInProgressMember
1121 Undeveloped properties Member hmy:UndevelopedPropertiesMember
1122 Other non-mining assets Member hmy:OtherNonMiningAssetsMember
1123 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1124 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1125 Cost Member ifrs-full:GrossCarryingAmountMember
1126 Accumulated depreciation and impairments Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
1127 Impairment Member ifrs-full:AccumulatedImpairmentMember
1128 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1129 Reconciliation of changes in property, plant and equipment Abstract ifrs-full:ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract
1130 Balance at beginning of year Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1131 Fully depreciated assets no longer in use derecognised Concept (Monetary) For Period Credit ifrs-full:RetirementsPropertyPlantAndEquipment
1132 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
1133 Depreciation capitalised Concept (Monetary) For Period Debit hmy:DepreciationPropertyPlantandEquipmentCapitalisedCost
1134 Deemed disposal of 50% of Hidden Valley Concept (Monetary) For Period Credit hmy:DisposalsPropertyPlantandEquipmentDeemedDisposal
1135 Impairment of assets Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
1136 Reversal of impairment of assets Concept (Monetary) For Period ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
1137 Interest disposed of (as a percent) Concept (Percent) As Of hmy:EquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisitionDate
1138 Acquisitions Concept (Monetary) For Period Debit ifrs-full:AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment
1139 Interest acquired (as a percent) Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
1140 Disposals Concept (Monetary) For Period Credit ifrs-full:DisposalsPropertyPlantAndEquipment
1141 Scrapping of assets Concept (Monetary) For Period Credit hmy:DecreaseThroughScrappingOfAssetsPropertyPlantAndEquipment
1142 Depreciation Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
1143 Adjustment to rehabilitation asset Concept (Monetary) For Period Debit hmy:AdjustmenttoRehabilitationAsset
1144 Finance costs capitalised Concept (Monetary) For Period ifrs-full:InterestCostsCapitalised
1145 Transfers and other movements Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesPropertyPlantAndEquipment
1146 Translation Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
1147 Balance at end of year Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1148 Pre-production revenue Concept (Monetary) For Period Credit hmy:PreProductionRevenue
1149 2452408 - Disclosure - Property, Plant and Equipment - Other non-mining assets (Narrative) (Details) Network

*

*

 http://www.harmony.co.za/role/PropertyPlantAndEquipmentOtherNonMiningAssetsNarrativeDetails
1150 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1151 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1152 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1153 Vehicles Member ifrs-full:VehiclesMember
1154 Computer equipment Member ifrs-full:ComputerEquipmentMember
1155 Furniture and equipment Member hmy:FurnitureAndEquipmentMember
1156 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1157 Depreciation rate Concept (Percent) For Period hmy:DepreciationRatesPropertyPlantAndEquipment
1158 2453402 - Disclosure - Intangible Assets - Schedule of Intangible Assets (Details) Network

*

*

 http://www.harmony.co.za/role/IntangibleAssetsScheduleOfIntangibleAssetsDetails
1159 Disclosure of detailed information about intangible assets [table] Table

*

*

 ifrs-full:DisclosureOfIntangibleAssetsTable
1160 Classes of intangible assets and goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
1161 Intangible assets and goodwill [member] Member ifrs-full:IntangibleAssetsAndGoodwillMember
1162 Computer software Member ifrs-full:ComputerSoftwareMember
1163 Disclosure of detailed information about intangible assets [line items] LineItems ifrs-full:DisclosureOfIntangibleAssetsLineItems
1164 Amortisation rate (as a percent) Concept (Percent) For Period hmy:AmortisationRateIntangibleAssetsOtherthanGoodwill
1165 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
1166 Intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1167 Intangible assets and goodwill Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
1168 2453403 - Disclosure - Intangible Assets Intangible Assets - Schedule of Changes in Goodwill (Details) Network

*

*

 http://www.harmony.co.za/role/IntangibleAssetsIntangibleAssetsScheduleOfChangesInGoodwillDetails
1169 Disclosure of reconciliation of changes in intangible assets and goodwill [table] Table

*

*

 ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable
1170 Cash-generating units [axis] Axis ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis
1171 Entity's total for cash-generating units [member] Member ifrs-full:EntitysTotalForCashgeneratingUnitsMember
1172 Bambanani Member hmy:BambananiMember
1173 Moab Khotsong Member hmy:MoabKhotsongMember
1174 Tshepong Member hmy:TshepongMember
1175 Joel Member hmy:JoelMember
1176 Classes of intangible assets and goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
1177 Intangible assets and goodwill [member] Member ifrs-full:IntangibleAssetsAndGoodwillMember
1178 Goodwill Member ifrs-full:GoodwillMember
1179 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1180 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1181 Cost Member ifrs-full:GrossCarryingAmountMember
1182 Accumulated amortisation and impairments Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
1183 Disclosure of reconciliation of changes in intangible assets and goodwill [line items] LineItems ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems
1184 Balance at beginning of year Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
1185 Acquisitions of goodwill Concept (Monetary) For Period Debit ifrs-full:AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill
1186 Impairment Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsAndGoodwill
1187 Translation Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill
1188 Balance at end of year Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
1189 2453404 - Disclosure - Intangible Assets - Schedule of Changes in Technology Based Assets (Details) Network

*

*

 http://www.harmony.co.za/role/IntangibleAssetsScheduleOfChangesInTechnologyBasedAssetsDetails
1190 Disclosure of reconciliation of changes in intangible assets and goodwill [table] Table

*

*

 ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable
1191 Classes of intangible assets and goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
1192 Intangible assets and goodwill [member] Member ifrs-full:IntangibleAssetsAndGoodwillMember
1193 Technology-based assets Member ifrs-full:TechnologybasedIntangibleAssetsMember
1194 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1195 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1196 Cost Member ifrs-full:GrossCarryingAmountMember
1197 Accumulated amortisation and impairments Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
1198 Disclosure of reconciliation of changes in intangible assets and goodwill [line items] LineItems ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems
1199 Balance at beginning of year Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1200 Fully depreciated assets no longer in use derecognised Concept (Monetary) For Period Credit ifrs-full:RetirementsIntangibleAssetsOtherThanGoodwill
1201 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
1202 Amortisation charge Concept (Monetary) For Period ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
1203 Translation Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill
1204 Balance at end of year Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1205 2454402 - Disclosure - Restricted Cash (Details) Network

*

*

 http://www.harmony.co.za/role/RestrictedCashDetails
1206 Implied Table Table

*

*

 implied:Table
1207 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
1208 Non-current Concept (Monetary) As Of Debit ifrs-full:NoncurrentRestrictedCashAndCashEquivalents
1209 Current Concept (Monetary) As Of Debit ifrs-full:CurrentRestrictedCashAndCashEquivalents
1210 Total restricted cash Concept (Monetary) As Of Debit ifrs-full:RestrictedCashAndCashEquivalents
1211 Current restricted cash, released from environmental trusts Concept (Monetary) As Of Credit hmy:CashReleasedfromEnvironmentalTrusts
1212 2455402 - Disclosure - Restricted Investments - Disclosure of Restricted Investments (Details) Network

*

*

 http://www.harmony.co.za/role/RestrictedInvestmentsDisclosureOfRestrictedInvestmentsDetails
1213 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
1214 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1215 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1216 Investments held by environmental trust funds Member hmy:RestrictedInvestmentsHeldByEnvironmentalTrustFundsMember
1217 Investments held by social trust funds Member hmy:RestrictedInvestmentsHeldBySocialTrustFundsMember
1218 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1219 Total restricted investments Concept (Monetary) As Of Debit hmy:RestrictedInvestments1
1220 2455403 - Disclosure - Restricted Investments - Disclosure of Environmental Trust Funds (Details) Network

*

*

 http://www.harmony.co.za/role/RestrictedInvestmentsDisclosureOfEnvironmentalTrustFundsDetails
1221 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
1222 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1223 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1224 Investments held by environmental trust funds Member hmy:RestrictedInvestmentsHeldByEnvironmentalTrustFundsMember
1225 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1226 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1227 Held-to-maturity financial assets Member ifrs-full:HeldtomaturityInvestmentsCategoryMember
1228 Cash and cash equivalents (loans and receivables) Member ifrs-full:LoansAndReceivablesCategoryMember
1229 Fair value through profit or loss financial assets Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1230 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1231 Total environmental trust funds Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1232 2455404 - Disclosure - Restricted Investments - Reconciliation of Movement in Investments Held by Environmental Trust Funds (Details) Network

*

*

 http://www.harmony.co.za/role/RestrictedInvestmentsReconciliationOfMovementInInvestmentsHeldByEnvironmentalTrustFundsDetails
1233 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
1234 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1235 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1236 Nufcor SA Member hmy:NufcorSAMember
1237 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1238 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1239 Investments held by environmental trust funds Member hmy:RestrictedInvestmentsHeldByEnvironmentalTrustFundsMember
1240 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1241 Increase (decrease) in financial assets Abstract ifrs-full:IncreaseDecreaseInFinancialAssetsAbstract
1242 Balance at beginning of year Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1243 Interest income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
1244 Fair value gain Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss
1245 Moab Khotsong acquisition Concept (Monetary) For Period Debit hmy:AcquisitionsThroughBusinessCombinationsRestrictedInvestments
1246 Equity-linked deposits acquired Concept (Monetary) For Period Debit hmy:IncreaseDecreaseThroughEquityLinkedDepositsAcquiredMaturedFinancialAssets
1247 Maturity/(acquisition) of held-to-maturity investments Concept (Monetary) For Period Debit hmy:IncreaseDecreaseThroughHeldToMaturityInvestmentsMaturedAcquiredFinancialAssets
1248 Net (disposal)/acquisition of cash and cash equivalents Concept (Monetary) For Period Debit hmy:IncreaseDecreaseThroughAcquisitionDisposalofCashandCashEquivalents
1249 Translation Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughForeignExchangeFinancialAssets
1250 Balance at end of year Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1251 2456402 - Disclosure - Trade and Other Receivables - Disclosure of Trade and Other Receivables (Details) Network

*

*

 http://www.harmony.co.za/role/TradeAndOtherReceivablesDisclosureOfTradeAndOtherReceivablesDetails
1252 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1253 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1254 Counterparties [member] Member ifrs-full:CounterpartiesMember
1255 ARM BBEE Trust [Member] Member hmy:ARMBBEETrustMember
1256 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1257 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1258 Trade receivables (gold) Member hmy:TradereceivablesgoldMember
1259 Other trade receivables Member hmy:OtherTradeReceivablesMember
1260 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1261 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1262 Subordinated and unsecured loan to ARM BBEE Trust Member hmy:SubordinatedAndUnsecuredLoanToARMBBEETrustMember
1263 Legal Entity [Axis] Axis dei:LegalEntityAxis
1264 Entity [Domain] Member dei:EntityDomain
1265 ARM Member hmy:AfricanRainbowMineralsLimitedMember
1266 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1267 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1268 Pamodzi Member hmy:PamodziMember
1269 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1270 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1271 Gross Member ifrs-full:GrossCarryingAmountMember
1272 Provision for impairment Member ifrs-full:AccumulatedImpairmentMember
1273 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1274 Non-current assets Abstract ifrs-full:NoncurrentReceivablesAbstract
1275 Financial assets Abstract hmy:NoncurrentFinancialAssetsAbstract
1276 Loans to associates Concept (Monetary) As Of Debit ifrs-full:NoncurrentReceivablesDueFromAssociates
1277 Loan to ARM BBEE Trust Concept (Monetary) As Of Debit ifrs-full:NoncurrentLoansAndReceivables
1278 Provision for impairment Concept (Monetary) As Of Credit hmy:ProvisionforImpairment
1279 Total non-current trade and other receivables Concept (Monetary) As Of Debit ifrs-full:NoncurrentReceivables
1280 Current assets Abstract ifrs-full:TradeAndOtherCurrentReceivablesAbstract
1281 Financial assets Abstract hmy:CurrentNonFinancialAssetsAbstract
1282 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
1283 Interest and other receivables Concept (Monetary) As Of Debit hmy:InterestAndOtherCurrentReceivables
1284 Employee receivables Concept (Monetary) As Of Debit hmy:CurrentEmployeeReceivables
1285 Impairment allowance Concept (Monetary) As Of Credit hmy:InterestAndOtherCurrentReceivablesImpairmentAllowance
1286 Ownership interest (as a percent) Concept (Percent) For Period hmy:ProportionOfOwnershipInterestHeldByShareholder
1287 Interest rate margin (as a percent) Concept (Percent) As Of ifrs-full:BorrowingsAdjustmentToInterestRateBasis
1288 Reversal of impairment loss Concept (Monetary) For Period ifrs-full:ReversalAllowanceAccountForCreditLossesOfFinancialAssets
1289 Impairment loss recognised Concept (Monetary) For Period ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
1290 Recoverable amount Concept (Monetary) As Of Debit hmy:FinancialAssetsRecoverableAmount
1291 Non-financial assets Abstract hmy:CurrentFinancialAssetsAbstract
1292 Prepayments Concept (Monetary) As Of Debit ifrs-full:CurrentPrepayments
1293 Value added tax Concept (Monetary) As Of Debit ifrs-full:CurrentValueAddedTaxReceivables
1294 Income and mining taxes Concept (Monetary) As Of Debit hmy:CurrentTaxesReceivable
1295 Total current trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
1296 2456403 - Disclosure - Trade and Other Receivables - Disclosure of Movement in the Provision for Impairment (Details) Network

*

*

 http://www.harmony.co.za/role/TradeAndOtherReceivablesDisclosureOfMovementInProvisionForImpairmentDetails
1297 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
1298 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1299 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1300 Trade receivables Member ifrs-full:TradeReceivablesMember
1301 Non-current loans receivable Member hmy:NoncurrentLoansReceivableMember
1302 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1303 Reconciliation of changes in allowance account for credit losses of financial assets Abstract ifrs-full:ReconciliationOfChangesInAllowanceAccountForCreditLossesOfFinancialAssetsAbstract
1304 Balance at beginning of year Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1305 Impairment loss recognised Concept (Monetary) For Period ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
1306 Reversal of impairment loss Concept (Monetary) For Period ifrs-full:ReversalAllowanceAccountForCreditLossesOfFinancialAssets
1307 Translation Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesAllowanceAccountForCreditLossesOfFinancialAssets
1308 Balance at end of year Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1309 2456404 - Disclosure - Trade and Other Receivables - Disclosure of Ageing of Current Trade Receivables and Non-Current Loans Receivable (Details) Network

*

*

 http://www.harmony.co.za/role/TradeAndOtherReceivablesDisclosureOfAgeingOfCurrentTradeReceivablesAndNonCurrentLoansReceivableDetails
1310 Disclosure of financial assets that are either past due or impaired [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
1311 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
1312 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
1313 Fully performing Member ifrs-full:FinancialAssetsNeitherPastDueNorImpairedMember
1314 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1315 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1316 Trade receivables Member ifrs-full:TradeReceivablesMember
1317 Non-current loans receivable Member hmy:NoncurrentLoansReceivableMember
1318 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1319 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1320 Gross Member ifrs-full:GrossCarryingAmountMember
1321 Impairment Member ifrs-full:AccumulatedImpairmentMember
1322 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
1323 Past due status [member] Member ifrs-full:PastDueStatusMember
1324 Fully performing Member ifrs-full:FinancialAssetsNeitherPastDueNorImpairedMember
1325 Past due by 1 to 30 days Member ifrs-full:CurrentMember
1326 Past due by 31 to 60 days Member ifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMember
1327 Past due by 61 to 90 days Member ifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember
1328 Past due by more than 90 days Member ifrs-full:LaterThanThreeMonthsMember
1329 Past due by more than 361 days Member ifrs-full:LaterThanOneYearMember
1330 Disclosure of financial assets that are either past due or impaired [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
1331 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1332 Collateral pledged or held for receivables Concept (Monetary) As Of Debit ifrs-full:AssetsHeldAsCollateralPermittedToBeSoldOrRepledgedAtFairValue
1333 2457402 - Disclosure - Derivative Financial Assets - Disclosure of Derivative Financial Assets and Liabilities (Details) Network

*

*

 http://www.harmony.co.za/role/DerivativeFinancialAssetsDisclosureOfDerivativeFinancialAssetsAndLiabilitiesDetails
1334 Disclosure of detailed information about hedging instruments [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsTable
1335 Segments [axis] Axis ifrs-full:SegmentsAxis
1336 Segments [member] Member ifrs-full:SegmentsMember
1337 Hidden Valley Member hmy:HiddenValleyMember
1338 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1339 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1340 Rand gold hedging contracts Member hmy:RandGoldHedgingContractsMember
1341 Forex hedging contracts Member hmy:ForeignExchangeHedgingContractsMember
1342 US$ commodity contracts Member hmy:USCommodityContractsMember
1343 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
1344 Risks [member] Member ifrs-full:TypesOfRisksMember
1345 Commodity price risk Member ifrs-full:CommodityPriceRiskMember
1346 Currency risk Member ifrs-full:CurrencyRiskMember
1347 Types of hedges [axis] Axis ifrs-full:TypesOfHedgesAxis
1348 Hedges [member] Member ifrs-full:TypesOfHedgesMember
1349 Cash flow hedges Member ifrs-full:CashFlowHedgesMember
1350 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
1351 Hedging instruments Member ifrs-full:HedgingInstrumentsMember
1352 Rand gold hedging contracts Member hmy:RandGoldHedgingContractsMember
1353 Disclosure of detailed information about hedging instruments [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsLineItems
1354 Non-current financial assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentDerivativeFinancialAssets
1355 Current financial assets Concept (Monetary) As Of Debit ifrs-full:CurrentDerivativeFinancialAssets
1356 Total derivative financial assets Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
1357 Non-current financial liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentDerivativeFinancialLiabilities
1358 Current financial liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentDerivativeFinancialLiabilities
1359 Total derivative financial liabilities Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
1360 Realised gain Concept (Monetary) For Period Credit hmy:RealisedGainLossOnHedgingInstrument
1361 Gain included in revenue Concept (Monetary) For Period Credit hmy:RealisedGainLossOnHedgingInstrumentEffectivePortion
1362 Ineffective portion Concept (Monetary) For Period Credit ifrs-full:GainLossOnHedgeIneffectivenessRecognisedInProfitOrLoss
1363 Unamortised portion Concept (Monetary) As Of Credit hmy:DerivativeUnamortisedDayOneGainOrLoss
1364 Derivative gain Concept (Monetary) For Period Credit hmy:GainLossOnDerivativesFinancialInstrumentsMeasuredAtFairValueThroughProfitOrLoss
1365 2457403 - Disclosure - Derivative Financial Assets - Disclosure of Open Position at the Reporting Date (Details) Network

*

*

 http://www.harmony.co.za/role/DerivativeFinancialAssetsDisclosureOfOpenPositionAtReportingDateDetails
1366 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
1367 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1368 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1369 Zero cost collars Member hmy:ZeroCostCollarsMemberMember
1370 Forward contracts Member hmy:ForeignExchangeContractsMember
1371 US gold derivative contracts Member hmy:USGoldDerivativeContractsMember
1372 Gold derivative contracts Member hmy:GoldDerivativeContractsMember
1373 US silver derivative contracts Member hmy:USSilverDerivativeContractsMember
1374 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
1375 Hedging instruments Member ifrs-full:HedgingInstrumentsMember
1376 Rand gold hedging contracts Member hmy:RandGoldHedgingContractsMember
1377 Types of hedges [axis] Axis ifrs-full:TypesOfHedgesAxis
1378 Hedges [member] Member ifrs-full:TypesOfHedgesMember
1379 Cash flow hedges Member ifrs-full:CashFlowHedgesMember
1380 Maturity [axis] Axis ifrs-full:MaturityAxis
1381 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1382 FY19 Q1 Member ifrs-full:LaterThanThreeMonthsMember
1383 FY19 Q2 Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMember
1384 FY19 Q3 Member hmy:LaterThanSixMonthsAndNotLaterThanNineMonthsMember
1385 FY19 Q4 Member hmy:LaterThanNineMonthsAndNotLaterThanOneYearMember
1386 FY20 Q1 Member hmy:LaterThanOneYearNotLaterThanOneYearThreeMonthsMember
1387 FY20 Q2 Member hmy:LaterThanOneYearThreeMonthsNotLaterThanOneYearSixMonthsMember
1388 FY20 Q3 Member hmy:LaterThanOneYearSixMonthsNotLaterThanOneYearNineMonthsMember
1389 FY20 Q4 Member hmy:LaterthanOneYearNineMonthsNotLaterthanTwoYearsMember
1390 Range [axis] Axis ifrs-full:RangeAxis
1391 Ranges [member] Member ifrs-full:RangesMember
1392 Floor Member ifrs-full:BottomOfRangeMember
1393 Cap Member ifrs-full:TopOfRangeMember
1394 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
1395 Derivative, notional amount Concept (Monetary) As Of invest:DerivativeNotionalAmount
1396 Derivative, nonmonetary notional amount (oz) Concept (Decimal) As Of invest:DerivativeNonmonetaryNotionalAmount
1397 Price of hedging instrument Concept (Decimal) As Of ifrs-full:AveragePriceOfHedgingInstrument
1398 Price of derivative instrument at fair value through profit and loss Concept (Decimal) As Of hmy:AveragePriceOfDerivativeFinancialInstrumentsAtFairValueThroughProfitAndLoss
1399 2458402 - Disclosure - Investments in Associates - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/InvestmentsInAssociatesNarrativeDetails
1400 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
1401 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1402 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1403 Pamodzi Member hmy:PamodziMember
1404 Rand Refinery Member hmy:RandRefineryMember
1405 Disclosure of associates [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
1406 Ownership interest (as a percent) Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
1407 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
1408 Draw down Concept (Monetary) As Of Credit hmy:TotalShareholdersLoanToAssociate
1409 Receivables due from associates Concept (Monetary) As Of Debit ifrs-full:ReceivablesDueFromAssociates
1410 Fair value of loan Concept (Monetary) For Period Credit hmy:DebtConversionOriginalDebtFairValueAmount
1411 Loss on conversion Concept (Monetary) For Period Debit hmy:LossArisingFromConversionOfLoanToPreferenceShares
1412 Discount rate used in current measurement of fair value less costs of disposal Concept (Percent) As Of ifrs-full:DiscountRateUsedInCurrentMeasurementOfFairValueLessCostsOfDisposal
1413 Decrease due to impairment Concept (Monetary) For Period Credit hmy:InvestmentinAssociatesDecreaseduetoImpairmentLoss
1414 2458403 - Disclosure - Investments in Associates - Net Investments In Associate (Details) Network

*

*

 http://www.harmony.co.za/role/InvestmentsInAssociatesNetInvestmentsInAssociateDetails
1415 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
1416 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1417 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1418 Rand Refinery Member hmy:RandRefineryMember
1419 Disclosure of associates [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
1420 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
1421 Investment in ordinary shares Concept (Monetary) As Of Debit hmy:InvestmentInOrdinarySharesOfAssociate
1422 Redeemable preference shares Concept (Monetary) As Of Debit hmy:InvestmentInRedeemablePreferenceSharesOfAssociate
1423 Net investments in associates Concept (Monetary) As Of Debit hmy:NetInvestmentsInAssociates
1424 Movement In Investment In Associates [Abstract] Abstract hmy:MovementInInvestmentInAssociatesAbstract
1425 Balance at beginning of year Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
1426 Conversion to preference shares Concept (Monetary) For Period Debit hmy:InvestmentinAssociatesIncreaseThroughConversionToPreferenceShares
1427 Share of profit (loss) of associates accounted for using equity method Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod
1428 Decrease due to impairment Concept (Monetary) For Period Credit hmy:InvestmentinAssociatesDecreaseduetoImpairmentLoss
1429 Decrease due to translation loss Concept (Monetary) For Period Credit hmy:InvestmentinAssociatesDecreaseduetoTranslationLoss
1430 Balance at end of year Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
1431 2459401 - Disclosure - Investment in Joint Operations (Details) Network

*

*

 http://www.harmony.co.za/role/InvestmentInJointOperationsDetails
1432 Disclosure of joint ventures [table] Table

*

*

 ifrs-full:DisclosureOfJointVenturesTable
1433 Joint operations [axis] Axis ifrs-full:JointOperationsAxis
1434 Entity's total for joint operations [member] Member ifrs-full:EntitysTotalForJointOperationsMember
1435 HVJV Member hmy:HVJVMember
1436 Newcrest PNG 1 Ltd Member hmy:NewcrestPNG1LtdMember
1437 Disclosure of joint ventures [line items] LineItems ifrs-full:DisclosureOfJointVenturesLineItems
1438 Proportion of ownership interest in joint venture (as a percent) Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointOperation
1439 Interest acquired (as a percent) Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
1440 2460402 - Disclosure - Inventories (Details) Network

*

*

 http://www.harmony.co.za/role/InventoriesDetails
1441 Implied Table Table

*

*

 implied:Table
1442 Inventories [Abstract] Abstract hmy:InventoriesAbstract
1443 Gold in lock-up Concept (Monetary) As Of Debit hmy:GoldInLockup
1444 Gold in-process, ore stockpiles and bullion on hand Concept (Monetary) As Of Debit hmy:GoldInprocessOreStockpilesAndBullionOnHand
1445 Consumables at weighted average cost (net of provision) Concept (Monetary) As Of Debit hmy:ConsumablesAtWeightedAverageCost
1446 Total inventories Concept (Monetary) As Of Debit ifrs-full:InventoriesTotal
1447 Non-current portion of gold in lock-up and gold in-process Concept (Monetary) As Of Debit ifrs-full:NoncurrentInventories
1448 Total current portion of inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
1449 Inventory valued at net realisable value Concept (Monetary) As Of Debit ifrs-full:InventoriesAtNetRealisableValue
1450 2460403 - Disclosure - Inventories (Narrative) (Details) Network

*

*

 http://www.harmony.co.za/role/InventoriesNarrativeDetails
1451 Implied Table Table

*

*

 implied:Table
1452 Inventories [Abstract] Abstract hmy:InventoriesAbstract
1453 Increase in provisions for slow moving and redundant stock Concept (Monetary) For Period ifrs-full:InventoryWritedown2011
1454 Provision for slow moving and redundant stock Concept (Monetary) As Of Credit hmy:InventoryProvision
1455 2461401 - Disclosure - Share Capital (Details) Network

*

*

 http://www.harmony.co.za/role/ShareCapitalDetails
1456 Disclosure of classes of share capital [table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1457 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
1458 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
1459 Shares Issued Member ifrs-full:MajorOrdinaryShareTransactionsMember
1460 Legal Entity [Axis] Axis dei:LegalEntityAxis
1461 Entity [Domain] Member dei:EntityDomain
1462 ARM Member hmy:AfricanRainbowMineralsLimitedMember
1463 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1464 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1465 Lydenburg Exploration Limited Member ifrs-full:SubsidiariesMember
1466 Share trust controlled by entity Member hmy:ShareTrustControlledByTheEntityMember
1467 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1468 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1469 Ordinary shares Member ifrs-full:OrdinarySharesMember
1470 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1471 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1472 ESOP Member hmy:EmployeeShareOwnershipPlan2012Member
1473 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1474 Number of shares authorised Concept (Shares) As Of ifrs-full:NumberOfSharesAuthorised
1475 Par value per share (SA cents per share) Concept (Share) As Of ifrs-full:ParValuePerShare
1476 Number of shares issued and fully paid Concept (Shares) As Of ifrs-full:NumberOfSharesIssuedAndFullyPaid
1477 Additional capital authorised Concept (Monetary) For Period Credit hmy:OrdinarySharesAuthorizedForIssue
1478 Ordinary share capital issued (as a percent) Concept (Percent) For Period hmy:OrdinaryShareCapitalIssuedPercent
1479 Shares issued and fully paid (in shares) Concept (Shares) For Period ifrs-full:IncreaseDecreaseInNumberOfOrdinarySharesIssued
1480 Shares issued price per share Concept (Share) For Period hmy:SharesIssuedPricePerShare1
1481 Proceeds from issuing shares Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
1482 Share issue related cost Concept (Monetary) For Period Debit ifrs-full:ShareIssueRelatedCost
1483 Ownership interest (as a percent) Concept (Percent) For Period hmy:ProportionOfOwnershipInterestHeldByShareholder
1484 Shares issued relating to exercise of share options Concept (Shares) For Period hmy:StockIssuedDuringPeriodSharesExerciseofStockOptions
1485 Number of issued shares held by subsidiary and share trust Concept (Shares) As Of ifrs-full:SharesInEntityHeldByEntityOrByItsSubsidiariesOrAssociates
1486 Number of other equity instruments granted in share-based payment arrangement Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1487 2462402 - Disclosure - Other Reserves - Disclosure of Other Reserves (Details) Network

*

*

 http://www.harmony.co.za/role/OtherReservesDisclosureOfOtherReservesDetails
1488 Implied Table Table

*

*

 implied:Table
1489 Disclosure of reserves within equity [abstract] Abstract ifrs-full:DisclosureOfReservesWithinEquityAbstract
1490 Foreign exchange translation reserve Concept (Monetary) As Of Credit ifrs-full:ReserveOfExchangeDifferencesOnTranslation
1491 Hedge reserve Concept (Monetary) As Of Credit ifrs-full:ReserveOfCashFlowHedges
1492 Share-based payments Concept (Monetary) As Of Credit ifrs-full:ReserveOfSharebasedPayments
1493 Post-retirement benefit actuarial gain/(loss) Concept (Monetary) As Of Credit ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlans
1494 Acquisition of non-controlling interest in subsidiary Concept (Monetary) As Of Credit ifrs-full:MergerReserve
1495 Equity component of convertible bond Concept (Monetary) As Of Credit ifrs-full:ReserveOfEquityComponentOfConvertibleInstruments
1496 Repurchase of equity interest Concept (Monetary) As Of Credit hmy:OtherReservesReserveForRepurchaseOfEquityInterest
1497 Other Concept (Monetary) As Of Credit hmy:OtherReservesOther
1498 Total other reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
1499 2462403 - Disclosure - Other Reserves - Reconciliation of the Hedge Reserve (Details) Network

*

*

 http://www.harmony.co.za/role/OtherReservesReconciliationOfHedgeReserveDetails
1500 Implied Table Table

*

*

 implied:Table
1501 Disclosure of reserves within equity [abstract] Abstract ifrs-full:DisclosureOfReservesWithinEquityAbstract
1502 Changes In Reserve For Cash Flow Hedges Abstract hmy:ChangesInReserveForCashFlowHedgesRollForward
1503 Balance at beginning of year Concept (Monetary) As Of Credit ifrs-full:ReserveOfCashFlowHedges
1504 Unrealised gain on Rand gold contracts, including deferred tax thereon Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnCashFlowHedgesNetOfTax
1505 Net gain on Rand gold contracts Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnCashFlowHedgesBeforeTax
1506 Unrealised gain on Rand gold contracts, deferred tax thereon Concept (Monetary) For Period Debit hmy:DeferredTaxEffectFromChangeInReserveThroughUnrealisedGainsLossesOnCashFlowHedges
1507 Released to revenue, including deferred tax thereon Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnCashFlowHedgesNetOfTax
1508 Released to revenue Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnCashFlowHedgesBeforeTax
1509 Released to revenue, deferred tax thereon Concept (Monetary) For Period Credit hmy:DeferredTaxEffectFromReleaseOfReserveOnCashFlowHedgesToRevenue
1510 Released to gains on derivatives (hedge ineffectiveness), including deferred tax thereon Concept (Monetary) For Period Debit hmy:ReleaseOfReserveOnCashFlowHedgesToGainsOnDerivativesDueToHedgeIneffectivenessIncludingDeferredTaxEffectNetofTax
1511 Released to gains on derivatives (hedge ineffectiveness) Concept (Monetary) For Period Debit hmy:ReleaseOfReserveOnCashFlowHedgesToGainsOnDerivativesDueToHedgeIneffectivenessBeforeTax
1512 Released to gains on derivatives (hedge ineffectiveness), deferred tax thereon Concept (Monetary) For Period Credit hmy:DeferredTaxEffectFromReleaseOfReserveOnCashFlowHedgesToGainsOnDerivativesDueToHedgeIneffectiveness
1513 Balance at end of year Concept (Monetary) As Of Credit ifrs-full:ReserveOfCashFlowHedges
1514 2462404 - Disclosure - Other Reserves - Reconciliation of Share Based Payment Reserve (Details) Network

*

*

 http://www.harmony.co.za/role/OtherReservesReconciliationOfShareBasedPaymentReserveDetails
1515 Implied Table Table

*

*

 implied:Table
1516 Disclosure of reserves within equity [abstract] Abstract ifrs-full:DisclosureOfReservesWithinEquityAbstract
1517 Reconciliation Of The Share-Based Payments Reserve Abstract hmy:ReconciliationOfTheShareBasedPaymentsReserveRollForward
1518 Balance at beginning of year Concept (Monetary) As Of Credit ifrs-full:ReserveOfSharebasedPayments
1519 Share-based payments expensed Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
1520 Balance at end of year Concept (Monetary) As Of Credit ifrs-full:ReserveOfSharebasedPayments
1521 2462405 - Disclosure - Other Reserves - Reconciliation of Post Retirement Benefit Reserve (Details) Network

*

*

 http://www.harmony.co.za/role/OtherReservesReconciliationOfPostRetirementBenefitReserveDetails
1522 Implied Table Table

*

*

 implied:Table
1523 Disclosure of reserves within equity [abstract] Abstract ifrs-full:DisclosureOfReservesWithinEquityAbstract
1524 Balance at beginning of year Concept (Monetary) As Of Credit ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlans
1525 Actuarial loss Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
1526 Balance at end of year Concept (Monetary) As Of Credit ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlans
1527 2462406 - Disclosure - Other Reserves - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/OtherReservesNarrativeDetails
1528 Disclosure of reserves within equity [table] Table

*

*

 ifrs-full:DisclosureOfReservesWithinEquityTable
1529 Investment Geographic Region [Axis] Axis invest:InvestmentGeographicRegionAxis
1530 Investment Geographic Region [Domain] Member invest:InvestmentGeographicRegionDomain
1531 Doornkop South Reef Member hmy:DoornkopSouthReefMember
1532 Investment Contract Counterparty [Axis] Axis invest:InvestmentContractCounterpartyAxis
1533 Investment Contract Counterparty [Domain] Member invest:InvestmentContractCounterpartyDomain
1534 AVRD Member hmy:AfricanVanguardResourcesProprietaryLimitedMember
1535 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1536 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1537 Abelle Limited Member hmy:AbelleLimitedMember
1538 Disclosure of reserves within equity [line items] LineItems ifrs-full:DisclosureOfReservesWithinEquityLineItems
1539 Purchase price Concept (Monetary) For Period Credit ifrs-full:PaymentsFromChangesInOwnershipInterestsInSubsidiaries
1540 Acquisition of non-controlling interest in subsidiary Concept (Monetary) As Of Credit ifrs-full:MergerReserve
1541 Share of mining titles acquired (as a percent) Concept (Percent) For Period hmy:PurchaseOfMiningTitlesPercentageAcquired
1542 Shares issued in exchange for interest in mining titles (in shares) Concept (Shares) For Period hmy:PurchaseOfMiningTitlesSharesIssuedAsConsideration
1543 Difference between the value of shares issued Concept (Monetary) For Period Credit hmy:PurchaseOfMiningTitlesValueOfSharesIssuedAsConsideration
1544 2463402 - Disclosure - Provision for Environmental Rehabilitation - Disclosure of Rates Used in the Calculated of the Provision (Details) Network

*

*

 http://www.harmony.co.za/role/ProvisionForEnvironmentalRehabilitationDisclosureOfRatesUsedInCalculatedOfProvisionDetails
1545 Disclosure of maturity analysis for non-derivative financial liabilities [table] Table

*

*

 ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesTable
1546 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
1547 Other provisions [member] Member ifrs-full:OtherProvisionsMember
1548 Provision raised for future rehabilitation Member ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
1549 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1550 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1551 South African operations Member country:ZA
1552 PNG operations Member hmy:IndependentStateOfPapuaNewGuineaMember
1553 Maturity [axis] Axis ifrs-full:MaturityAxis
1554 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1555 - 12 months Member ifrs-full:NotLaterThanOneYearMember
1556 - one to five years Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1557 - six to nine years Member ifrs-full:LaterThanFiveYearsAndNotLaterThanTenYearsMember
1558 - ten years or more Member ifrs-full:LaterThanTenYearsMember
1559 Disclosure of maturity analysis for non-derivative financial liabilities [line items] LineItems ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems
1560 Inflation rate Concept (Percent) For Period hmy:MajorAssumptionsMadeConcerningFutureEventsOtherProvisionsInflationRate
1561 Discount rates Concept (Percent) For Period hmy:MajorAssumptionsMadeConcerningFutureEventsOtherProvisionsDiscountRate
1562 2463403 - Disclosure - Provision for Environmental Rehabilitation - Reconciliation of the Total Liability for Environmental Rehabilitation (Details) Network

*

*

 http://www.harmony.co.za/role/ProvisionForEnvironmentalRehabilitationReconciliationOfTotalLiabilityForEnvironmentalRehabilitationDetails
1563 Disclosure of other provisions [table] Table

*

*

 ifrs-full:DisclosureOfOtherProvisionsTable
1564 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
1565 Other provisions [member] Member ifrs-full:OtherProvisionsMember
1566 Provision raised for future rehabilitation Member ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
1567 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1568 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1569 PNG Member hmy:IndependentStateOfPapuaNewGuineaMember
1570 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
1571 Reconciliation of changes in other provisions Abstract ifrs-full:ReconciliationOfChangesInOtherProvisionsAbstract
1572 Balance at beginning of year Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1573 Change in estimate - Balance sheet Concept (Monetary) For Period Credit hmy:IncreaseDecreaseInOtherProvisionsBalanceSheet
1574 Change in estimate - Income statement Concept (Monetary) For Period Credit hmy:IncreaseDecreaseInOtherProvisionsIncomeStatement
1575 Utilisation of provision Concept (Monetary) For Period Debit ifrs-full:ProvisionUsedOtherProvisions
1576 Time value of money and inflation component of rehabilitation costs Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTimeValueOfMoneyAdjustmentOtherProvisions
1577 Acquisitions Concept (Monetary) For Period Credit ifrs-full:AcquisitionsThroughBusinessCombinationsOtherProvisions
1578 Translation Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions
1579 Ending balance Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1580 2463404 - Disclosure - Provision for Environmental Rehabilitation - Disclosure of Future Net Undiscounted Obligation (Details) Network

*

*

 http://www.harmony.co.za/role/ProvisionForEnvironmentalRehabilitationDisclosureOfFutureNetUndiscountedObligationDetails
1581 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
1582 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1583 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1584 Investments held by environmental trust funds Member hmy:RestrictedInvestmentsHeldByEnvironmentalTrustFundsMember
1585 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1586 Ultimate estimated rehabilitation cost Concept (Monetary) As Of Credit hmy:ProvisionForDecommissioningRestorationAndRehabilitationCostsUndiscountedCashFlows
1587 Amounts invested in environmental trust funds Concept (Monetary) As Of Debit hmy:RestrictedInvestments1
1588 Total future net undiscounted obligation Concept (Monetary) As Of Credit hmy:ProvisionForDecommissioningRestorationAndRehabilitationCostsNetOfInvestmentInEnvironmentalTrustFundsUndiscountedCashFlows
1589 2464402 - Disclosure - Provision for Silicosis Settlement - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/ProvisionForSilicosisSettlementNarrativeDetails
1590 Disclosure of other provisions [table] Table

*

*

 ifrs-full:DisclosureOfOtherProvisionsTable
1591 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
1592 Other provisions [member] Member ifrs-full:OtherProvisionsMember
1593 Provision raised for settlement Member ifrs-full:LegalProceedingsProvisionMember
1594 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
1595 Discount rates Concept (Percent) For Period hmy:MajorAssumptionsMadeConcerningFutureEventsOtherProvisionsDiscountRate
1596 Provision amount Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1597 Change in estimate Concept (Monetary) For Period Credit hmy:IncreaseDecreaseThroughTransfersAndOtherChangesChangeInEstimate
1598 Nominal amount Concept (Monetary) As Of Credit hmy:ProvisionsNominalAmount
1599 2464403 - Disclosure - Provision for Silicosis Settlement - Reconciliation of the Total Provision for the Silicosis Settlement (Details) Network

*

*

 http://www.harmony.co.za/role/ProvisionForSilicosisSettlementReconciliationOfTotalProvisionForSilicosisSettlementDetails
1600 Disclosure of other provisions [table] Table

*

*

 ifrs-full:DisclosureOfOtherProvisionsTable
1601 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
1602 Other provisions [member] Member ifrs-full:OtherProvisionsMember
1603 Provision raised for settlement Member ifrs-full:LegalProceedingsProvisionMember
1604 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
1605 Reconciliation of changes in other provisions Abstract ifrs-full:ReconciliationOfChangesInOtherProvisionsAbstract
1606 Balance at beginning of year Concept (Monetary) As Of Credit ifrs-full:LongtermLegalProceedingsProvision
1607 Initial recognition Concept (Monetary) For Period Credit ifrs-full:NewProvisionsOtherProvisions
1608 Change in estimate Concept (Monetary) For Period Credit hmy:IncreaseDecreaseThroughTransfersAndOtherChangesChangeInEstimate
1609 Time value of money and inflation component Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTimeValueOfMoneyAdjustmentOtherProvisions
1610 Translation loss Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions
1611 Balance at end of year Concept (Monetary) As Of Credit ifrs-full:LongtermLegalProceedingsProvision
1612 2464404 - Disclosure - Provision for Silicosis Settlement - Disclosure of the Impact of a Reasonable Change in Certain Key Assumptions (Details) Network

*

*

 http://www.harmony.co.za/role/ProvisionForSilicosisSettlementDisclosureOfImpactOfReasonableChangeInCertainKeyAssumptionsDetails
1613 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

*

*

 ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable
1614 Other Provisions, Assumptions [Axis] Axis hmy:OtherProvisionsAssumptionsAxis
1615 Other Provisions, Assumptions [Domain] Member hmy:OtherProvisionsAssumptionsDomain
1616 Change in benefit take-up rate Member hmy:AssumptionOfBenefitTakeUpRateMember
1617 Change in silicosis prevalence Member hmy:AssumptionOfDiseasePrevalenceRateMember
1618 Change in disease progression rates Member hmy:AssumptionOfDiseaseProgressionRateMember
1619 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
1620 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
1621 Change in benefit take-up rate Member hmy:AssumptionOfBenefitTakeUpRateMember
1622 Change in labour number Member hmy:ActuarialAssumptionOfLabourNumberMember
1623 Change in disease risk Member hmy:ActuarialAssumptionOfDiseaseRiskMember
1624 Change in disease progression rates Member hmy:AssumptionOfDiseaseProgressionRateMember
1625 Disclosure of sensitivity analysis for actuarial assumptions [line items] LineItems ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1626 Effect of an increase in the assumption Concept (Monetary) As Of Credit hmy:IncreaseDecreaseInProvisionDueToReasonablyPossibleIncreaseInAssumption
1627 Effect of a decrease in the assumption Concept (Monetary) As Of Credit hmy:IncreaseDecreaseInProvisionDueToReasonablyPossibleDecreaseInAssumption
1628 Increase in assumption (as a percent) Concept (Percent) As Of hmy:PercentageOfReasonablyPossibleIncreaseInActuarialAssumptionUsedToEstimateProvision
1629 Decrease in assumption (as a percent) Concept (Percent) As Of hmy:PercentageOfReasonablyPossibleDecreaseInActuarialAssumptionUsedToEstimateProvision
1630 Increase in progression period Concept (xbrli:durationItemType) For Period hmy:PeriodOfReasonablyPossibleIncreaseInAssumptionUsedToEstimateProvision
1631 Decrease in progression period Concept (xbrli:durationItemType) For Period hmy:PeriodOfReasonablyPossibleDecreaseInAssumptionUsedToEstimateProvision
1632 2465402 - Disclosure - Retirement Benefit Obligation - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/RetirementBenefitObligationNarrativeDetails
1633 Implied Table Table

*

*

 implied:Table
1634 Employee Benefits [Abstract] Abstract hmy:EmployeeBenefitsAbstract
1635 Discount rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
1636 Increases in employer subsidies (as a percent) Concept (Percent) As Of hmy:ActuarialAssumptionOfIncreasesInEmployerSubsidies
1637 Retirement age (in years) Concept (Decimal) As Of ifrs-full:ActuarialAssumptionOfRetirementAge
1638 Medical inflation rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfInflation
1639 Retirement benefit costs Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
1640 Subsidy for every completed year of employment (as a percent) Concept (Percent) For Period hmy:SubsidyForEachCompletedYearOfEmploymentPercentage
1641 Maximum subsidy to be paid (as a percent) Concept (Percent) For Period hmy:MaximumSubsidyToBePaidPercentage
1642 Expected employed members that will be married at retirement or earlier death (as a percent) Concept (Percent) As Of hmy:ActuarialAssumptionOfMarriageRatesAtRetirementOrEarlierDeath
1643 Expected age gap between husbands and their younger wives (term) Concept (xbrli:durationItemType) For Period hmy:ActuarialAssumptionOfAgeGapBetweenHusbandsAndYoungerWives
1644 Expected contributions to the benefit plan in 2018 Concept (Monetary) For Period Credit ifrs-full:EstimateOfContributionsExpectedToBePaidToPlan
1645 Weighted average duration of the defined benefit obligation Concept (Decimal) For Period ifrs-full:WeightedAverageDurationOfDefinedBenefitObligation
1646 2465403 - Disclosure - Retirement Benefit Obligation - Disclosure of Unfunded Obligations (Details) Network

*

*

 http://www.harmony.co.za/role/RetirementBenefitObligationDisclosureOfUnfundedObligationsDetails
1647 Disclosure of net defined benefit liability (asset) [table] Table

*

*

 ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
1648 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1649 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
1650 Present value of defined benefit obligation Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
1651 Retirement Plan Beneficiary [Axis] Axis hmy:RetirementPlanBeneficiaryAxis
1652 Retirement Plan Beneficiary [Domain] Member hmy:RetirementPlanBeneficiaryDomain
1653 Current employees Member hmy:CurrentEmployeesMember
1654 Retired employees Member hmy:RetiredEmployeesMember
1655 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1656 Balance at beginning of year Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1657 Contributions paid Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanNetDefinedBenefitLiabilityAsset
1658 Finance costs Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1659 Net actuarial (gain)/loss recognised during the year Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
1660 Moab Khotsong acquisition Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughBusinessCombinationsAndDisposalsNetDefinedBenefitLiabilityAsset
1661 Translation Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset
1662 Balance at end of year Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1663 2465404 - Disclosure - Retirement Benefit Obligation - Disclosure of Net Liability of Defined Benefit Plan (Details) Network

*

*

 http://www.harmony.co.za/role/RetirementBenefitObligationDisclosureOfNetLiabilityOfDefinedBenefitPlanDetails
1664 Disclosure of net defined benefit liability (asset) [table] Table

*

*

 ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
1665 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1666 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
1667 Present value of defined benefit obligation Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
1668 Fair value of plan assets Member ifrs-full:PlanAssetsMember
1669 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1670 Net liability of defined benefit plan Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1671 2465405 - Disclosure - Retirement Benefit Obligation - Disclosure of the Effect of a Percentage Point Increase and Decrease in the Assumed Medical Cost Trend Rate (Details) Network

*

*

 http://www.harmony.co.za/role/RetirementBenefitObligationDisclosureOfEffectOfPercentagePointIncreaseAndDecreaseInAssumedMedicalCostTrendRateDetails
1672 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

*

*

 ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable
1673 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
1674 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
1675 Medical cost trend rate Member ifrs-full:ActuarialAssumptionOfMedicalCostTrendRatesMember
1676 Disclosure of sensitivity analysis for actuarial assumptions [line items] LineItems ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1677 Reasonably possible increase in actuarial assumption (as a percent) Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
1678 Effect of a 1% increase on aggregate of service cost and finance costs Concept (Monetary) As Of Credit hmy:IncreaseDecreaseInServiceAndFinanceCostsDueToReasonablyPossibleIncreaseInActuarialAssumption
1679 Effect of a 1% increase on defined benefit obligation Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
1680 Reasonably possible decrease in actuarial assumption (as a percent) Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
1681 Effect of a 1% decrease on aggregate of service cost and finance costs Concept (Monetary) As Of Credit hmy:IncreaseDecreaseInServiceAndFinanceCostsDueToReasonablyPossibleDecreaseInActuarialAssumption
1682 Effect of a 1% decrease on defined benefit obligation Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
1683 2466402 - Disclosure - Borrowings - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/BorrowingsNarrativeDetails
1684 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1685 Debt Instrument 1 [Axis] Axis hmy:DebtInstrument1Axis
1686 Debt Instrument [Domain] Member hmy:DebtInstrumentDomain
1687 Term Loan Member hmy:TermLoanMember
1688 RCF Member hmy:RCFMember
1689 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1690 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1691 Nedbank Limited (secured loan - R1.0 billion revolving credit facility) Member hmy:NedbankLimitedFebruary2017CreditFacilityMember
1692 US$250 revolving credit facility (secured loan) Member hmy:US250RevolvingCreditFacilitySecuredLoanMember
1693 US$350 million facility Member hmy:US350FacilitySecuredLoanMember
1694 US$200 bridge loan facility (secured loan) Member hmy:US200BridgeLoanFacilitySecuredLoanMember
1695 Range [axis] Axis ifrs-full:RangeAxis
1696 Ranges [member] Member ifrs-full:RangesMember
1697 Bottom of range Member ifrs-full:BottomOfRangeMember
1698 Top of range Member ifrs-full:TopOfRangeMember
1699 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1700 Maximum borrowing capacity Concept (Monetary) As Of Credit hmy:LineofCreditFacilityMaximumBorrowingCapacity1
1701 Repayments of non-current borrowings Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfNoncurrentBorrowings
1702 Borrowings raised Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
1703 Repayments of current borrowings Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfCurrentBorrowings
1704 Term of facility Concept (xbrli:durationItemType) For Period hmy:BorrowingsTerm
1705 Term loan facility maximum capacity Concept (Monetary) As Of Credit hmy:LoanFacilityMaximumBorrowingCapacity
1706 Minimum interest cover ratio Concept (Pure) For Period hmy:BorrowingsRestrictiveCovenantsMinimumInterestCoverRatio
1707 Minimum Tangible Net Worth to total net debt ratio Concept (Pure) For Period hmy:BorrowingsRestrictiveCovenantsMinimumTangibleNetWorthToTotalNetDebtRatio
1708 Maximum leverage ratio Concept (Pure) For Period hmy:BorrowingsRestrictiveCovenantsMaximumLeverageRatio
1709 Tangible Net Worth to total net debt ration Concept (Pure) As Of hmy:BorrowingsRestrictiveCovenantsTangibleNetWorthToTotalNetDebtRation
1710 2466403 - Disclosure - Borrowings - Disclosure of Terms and Debt Repayment Schedule (Details) Network

*

*

 http://www.harmony.co.za/role/BorrowingsDisclosureOfTermsAndDebtRepaymentScheduleDetails
1711 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1712 Debt Instrument 1 [Axis] Axis hmy:DebtInstrument1Axis
1713 Debt Instrument [Domain] Member hmy:DebtInstrumentDomain
1714 RCF Member hmy:RCFMember
1715 Term Loan Member hmy:TermLoanMember
1716 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1717 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1718 Nedbank Limited (Secured loan - rand revolving credit facility) Member hmy:NedbankLimitedFebruary2017CreditFacilityMember
1719 US$350 facility (secured loan) Member hmy:US350FacilitySecuredLoanMember
1720 US$200 bridge loan facility (secured loan) Member hmy:US200BridgeLoanFacilitySecuredLoanMember
1721 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
1722 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
1723 1, 3 or 6 month JIBAR Member hmy:OneThreeOrSixMonthJohannesburgInterbankAgreedRateJIBARMember
1724 3 or 6 month LIBOR Member hmy:ThreeOrSixMonthLondonInterBankOfferedRateLIBORMember
1725 LIBOR plus elected rate during first 6 months Member hmy:LIBORPlusElectedRateDuringFirst6MonthsMember
1726 LIBOR plus elected rate during next 3 months Member hmy:LIBORPlusElectedRateDuringMonths7Through9Member
1727 LIBOR plus elected rate during last 3 months Member hmy:LIBORPlusElectedRateDuringMonths10Through12Member
1728 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1729 Interest charge (as a percent) Concept (Percent) As Of ifrs-full:BorrowingsAdjustmentToInterestRateBasis
1730 2466404 - Disclosure - Borrowings - Disclosure of Interest Bearing Borrowings (Details) Network

*

*

 http://www.harmony.co.za/role/BorrowingsDisclosureOfInterestBearingBorrowingsDetails
1731 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1732 Maturity [axis] Axis ifrs-full:MaturityAxis
1733 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1734 Current Member ifrs-full:NotLaterThanOneYearMember
1735 Between one to two years Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1736 Between two to five years Member ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
1737 Expiring after one year Member ifrs-full:LaterThanOneYearMember
1738 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1739 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1740 Nedbank Limited (secured loan - R1.0 billion revolving credit facility) Member hmy:NedbankLimitedFebruary2017CreditFacilityMember
1741 US$250 revolving credit facility (secured loan) Member hmy:US250RevolvingCreditFacilitySecuredLoanMember
1742 US$350 facility (secured loan) Member hmy:US350FacilitySecuredLoanMember
1743 Nedbank Limited (secured loan) Member hmy:NedbankLimitedSecuredLoanMember
1744 US$200 bridge loan facility (secured loan) Member hmy:US200BridgeLoanFacilitySecuredLoanMember
1745 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1746 Non-current borrowings Abstract ifrs-full:NoncurrentPortionOfNoncurrentBorrowingsByTypeAbstract
1747 Maximum borrowing capacity Concept (Monetary) As Of Credit hmy:LineofCreditFacilityMaximumBorrowingCapacity1
1748 Balance at beginning of year Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
1749 Draw down Concept (Monetary) For Period Debit ifrs-full:ProceedsFromNoncurrentBorrowings
1750 Repayments Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfNoncurrentBorrowings
1751 Issue cost Concept (Monetary) For Period Credit ifrs-full:PaymentsForDebtIssueCosts
1752 Amortisation of issue costs Concept (Monetary) For Period Credit hmy:AmortizationOfDebtIssueCosts
1753 Transferred to current liabilities Concept (Monetary) For Period Debit hmy:NoncurrentBorrowingsTransferredtoCurrentBorrowings
1754 Translation Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughEffectOfChangesInForeignExchangeRatesLiabilitiesArisingFromFinancingActivities
1755 Total non-current borrowings Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
1756 Current borrowings Abstract ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowingsAbstract
1757 Balance at beginning of year Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
1758 Draw down Concept (Monetary) For Period Debit ifrs-full:ProceedsFromCurrentBorrowings
1759 Repayments Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfCurrentBorrowings
1760 Transferred from non-current liabilities Concept (Monetary) For Period Credit hmy:CurrentBorrowingsTransferredfromNoncurrentBorrowings
1761 Total current borrowings Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
1762 Total interest-bearing borrowings Concept (Monetary) As Of Credit hmy:BorrowingsBearingInterest
1763 Undrawn committed borrowing facilities Concept (Monetary) As Of Credit ifrs-full:UndrawnBorrowingFacilities
1764 2466405 - Disclosure - Borrowings - Disclosure of Effective Interest Rates (Details) Network

*

*

 http://www.harmony.co.za/role/BorrowingsDisclosureOfEffectiveInterestRatesDetails
1765 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1766 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1767 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1768 Nedbank Limited (Secured loan - rand revolving credit facility) Member hmy:NedbankLimitedFebruary2017CreditFacilityMember
1769 US$250 million revolving credit facility Member hmy:US250RevolvingCreditFacilitySecuredLoanMember
1770 US$350 million facility Member hmy:US350FacilitySecuredLoanMember
1771 US$200 million bridge loan Member hmy:US200BridgeLoanFacilitySecuredLoanMember
1772 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
1773 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
1774 Effective Interest Rate Member hmy:EffectiveInterestRateMember
1775 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1776 Interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1777 2467402 - Disclosure - Other Non-Current Liabilities (Details) Network

*

*

 http://www.harmony.co.za/role/OtherNonCurrentLiabilitiesDetails
1778 Implied Table Table

*

*

 implied:Table
1779 Disclosure of other provisions, contingent liabilities and contingent assets [Abstract] Abstract hmy:DisclosureofotherprovisionscontingentliabilitiesandcontingentassetsAbstract
1780 KOSH deep groundwater pollution liability Concept (Monetary) As Of Credit hmy:GroundwaterPollutionLiability
1781 Sibanye Beatrix ground swap royalty Concept (Monetary) As Of Credit hmy:GroundSwapRoyaltyLiability
1782 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
1783 Contingent liability assumed in business combination Concept (Monetary) As Of Credit ifrs-full:ContingentLiabilitiesRecognisedInBusinessCombination
1784 2468402 - Disclosure - Trade and Other Payables - Disclosure of Trade and Other Payables (Details) Network

*

*

 http://www.harmony.co.za/role/TradeAndOtherPayablesDisclosureOfTradeAndOtherPayablesDetails
1785 Disclosure of other provisions [table] Table

*

*

 ifrs-full:DisclosureOfOtherProvisionsTable
1786 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1787 Counterparties [member] Member ifrs-full:CounterpartiesMember
1788 Village Main Reef Limited Member hmy:VillageMainReefLimitedMember
1789 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
1790 Current liabilities Abstract ifrs-full:TradeAndOtherCurrentPayablesAbstract
1791 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
1792 Other liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentPayables
1793 Payroll accruals Concept (Monetary) As Of Credit hmy:ShorttermEmployeeBenefitsAccrualsPayroll
1794 Leave liabilities Concept (Monetary) As Of Credit hmy:ShorttermEmployeeBenefitsAccrualsLeaveLiabilities
1795 Shaft related accruals Concept (Monetary) As Of Credit hmy:ShaftRelatedAccruals
1796 Other accruals Concept (Monetary) As Of Credit hmy:OtherCurrentAccruals
1797 Value added tax Concept (Monetary) As Of Credit ifrs-full:CurrentValueAddedTaxPayables
1798 Total current trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
1799 2468403 - Disclosure - Trade and Other Payables - Disclosure of Movement in the Liability for Annual Leave (Details) Network

*

*

 http://www.harmony.co.za/role/TradeAndOtherPayablesDisclosureOfMovementInLiabilityForAnnualLeaveDetails
1800 Implied Table Table

*

*

 implied:Table
1801 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
1802 Balance at beginning of year Concept (Monetary) As Of Credit hmy:ShorttermEmployeeBenefitsAccrualsLeaveLiabilities
1803 Benefits paid Concept (Monetary) For Period Debit hmy:ShorttermEmployeeBenefitsAccrualsBenefitsPaid
1804 Total expense per income statement Concept (Monetary) For Period Credit hmy:ShorttermEmployeeBenefitsAccrualsExpenseforPeriod
1805 Acquisitions Concept (Monetary) For Period Credit hmy:ShorttermEmployeeBenefitsAccrualsAcquisitions
1806 Translation Concept (Monetary) For Period Debit hmy:ShorttermEmployeeBenefitsAccrualsTranslationAdjustments
1807 Balance at end of year Concept (Monetary) As Of Credit hmy:ShorttermEmployeeBenefitsAccrualsLeaveLiabilities
1808 2469402 - Disclosure - Cash Generated by Operations - Disclosure of Cash Generated by Operations (Details) Network

*

*

 http://www.harmony.co.za/role/CashGeneratedByOperationsDisclosureOfCashGeneratedByOperationsDetails
1809 Implied Table Table

*

*

 implied:Table
1810 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
1811 Reconciliation of profit/(loss) before taxation to cash generated by operations: Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
1812 Profit/(loss) before taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1813 Adjustments for: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
1814 Amortisation and depreciation Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense
1815 (Reversal of impairment)/impairment of assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
1816 Share-based payments Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForSharebasedPayments
1817 Net decrease in provision for post-retirement benefits Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities
1818 Net increase/(decrease) in provision for environmental rehabilitation Concept (Monetary) For Period Debit hmy:AdjustmentsForIncreaseDecreaseInProvisionForEnvironmentalRehabilitation
1819 Profit on sale of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment
1820 Loss on scrapping of property, plant and equipment Concept (Monetary) For Period Credit hmy:AdjustmentsForGainLossOnScrappingPropertyPlantAndEquipment
1821 (Profit)/loss from associates Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForUndistributedProfitsOfAssociates
1822 Gain on bargain purchase Concept (Monetary) For Period Credit ifrs-full:GainRecognisedInBargainPurchaseTransaction
1823 Interest received Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForInterestIncome
1824 Finance costs Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForFinanceCosts
1825 Inventory adjustments Concept (Monetary) For Period Debit hmy:IncreaseDecreaseInWorkingCapitalInventories
1826 Foreign exchange translation difference Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForUnrealisedForeignExchangeLossesGains
1827 Non cash portion of gains on derivatives Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainsLossesOnChangeInFairValueOfDerivatives
1828 Day one loss amortisation Concept (Monetary) For Period Debit hmy:AdjustmentsForDayOneLossAmortisation
1829 Silicosis settlement provision Concept (Monetary) For Period Debit hmy:AdjustmentsforIncreaseDecreaseinLegalProvision
1830 Other non-cash adjustments Concept (Monetary) For Period Debit ifrs-full:OtherAdjustmentsForNoncashItems
1831 Effect of changes in operating working capital items Abstract hmy:EffectOfChangesInOperatingWorkingCapitalAbstract
1832 Receivables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables
1833 Inventories Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
1834 Payables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables
1835 Cash generated by operations Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
1836 2469403 - Disclosure - Cash Generated by Operations - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/CashGeneratedByOperationsNarrativeDetails
1837 Implied Table Table

*

*

 implied:Table
1838 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
1839 Borrowing facilities available for future operation activities and future capital commitments Concept (Monetary) As Of Credit ifrs-full:UndrawnBorrowingFacilities
1840 2470402 - Disclosure - Employee Benefits - Disclosure of Permanent Employees and Aggregate Earnings of Employees (Details) Network

*

*

 http://www.harmony.co.za/role/EmployeeBenefitsDisclosureOfPermanentEmployeesAndAggregateEarningsOfEmployeesDetails
1841 Disclosure of geographical areas [table] Table

*

*

 ifrs-full:DisclosureOfGeographicalAreasTable
1842 Joint operations [axis] Axis ifrs-full:JointOperationsAxis
1843 Entity's total for joint operations [member] Member ifrs-full:EntitysTotalForJointOperationsMember
1844 Morobe Mining Joint Ventures (MMJV) Partnership Agreement [Member] Member hmy:MorobeMiningJointVenturesMMJVPartnershipAgreementMember
1845 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1846 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1847 South African operations Member ifrs-full:CountryOfDomicileMember
1848 International operations Member ifrs-full:ForeignCountriesMember
1849 Disclosure of geographical areas [line items] LineItems ifrs-full:DisclosureOfGeographicalAreasLineItems
1850 Total number of permanent employees Concept (Decimal) As Of ifrs-full:NumberOfEmployees
1851 Salaries and wages and other benefits Concept (Monetary) For Period Debit ifrs-full:ShorttermEmployeeBenefitsExpense
1852 Retirement benefit costs Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
1853 Medical aid contributions Concept (Monetary) For Period Debit hmy:PostEmploymentBenefitExpenseMedicalAidContributions
1854 Total aggregated earnings Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
1855 2470403 - Disclosure - Employee Benefits - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/EmployeeBenefitsNarrativeDetails
1856 Implied Table Table

*

*

 implied:Table
1857 Employee Benefits [Abstract] Abstract hmy:EmployeeBenefitsAbstract
1858 Termination costs Concept (Monetary) For Period Debit ifrs-full:TerminationBenefitsExpense
1859 2471402 - Disclosure - Share-Based Payments - Total Costs Related to Employee Share-Based Payments (Details) Network

*

*

 http://www.harmony.co.za/role/ShareBasedPaymentsTotalCostsRelatedToEmployeeShareBasedPaymentsDetails
1860 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1861 Plan Name1 [Axis] Axis hmy:PlanName1Axis
1862 Plan Name1 [Domain] Member hmy:PlanName1Domain
1863 2012 employee share ownership plan Member hmy:EmployeeShareOwnershipPlan2012Member
1864 2006 share plan Member hmy:SharePlan2006Member
1865 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1866 Total employee share-based payments Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
1867 2471403 - Disclosure - Share-Based Payments - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/ShareBasedPaymentsNarrativeDetails
1868 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1869 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1870 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1871 Ordinary shares Member ifrs-full:OrdinarySharesMember
1872 Plan Name1 [Axis] Axis hmy:PlanName1Axis
1873 Plan Name1 [Domain] Member hmy:PlanName1Domain
1874 2006 share plan Member hmy:SharePlan2006Member
1875 Disposal Group Name1 [Axis] Axis hmy:DisposalGroupName1Axis
1876 Disposal Group Name1 [Domain] Member hmy:DisposalGroupName1Domain
1877 Phoenix Member hmy:PhoenixMember
1878 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1879 Number of shares authorised Concept (Shares) As Of hmy:SharebasedCompensationArrangementbySharebasedPaymentAwardNumberofSharesAuthorized1
1880 Number of shares issued Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
1881 Number of other equity instruments granted in share-based payment arrangement Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1882 Disposal of operations, percent Concept (Percent) For Period hmy:DisposalGroupOwnershipInterestDisposed
1883 Disposal group ownership interest disposed, percentage Concept (Percent) For Period hmy:DisposalGroupOwnershipInterestDisposedFreeCarryAllocationPercentage
1884 Fair value expensed Concept (Monetary) For Period Debit hmy:ExpensefromShareBasedPaymentTransactionswithPartners
1885 2471404 - Disclosure - Share-Based Payments - Options Granted Under the 2006 Share Plan (Details) Network

*

*

 http://www.harmony.co.za/role/ShareBasedPaymentsOptionsGrantedUnder2006SharePlanDetails
1886 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1887 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1888 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1889 Share appreciation rights Member hmy:ShareAppreciationRightsMember
1890 Performance shares Member hmy:PerformanceShares1Member
1891 Restricted shares Member hmy:RestrictedSharesMember
1892 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1893 Remaining life (years) Concept (xbrli:durationItemType) For Period hmy:SharebasedCompensationArrangementbySharebasedPaymentAwardExpirationPeriod1
1894 Vesting period Concept (xbrli:durationItemType) For Period hmy:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod2
1895 Number of rights linked to group on absolute basis (as a percent) Concept (Percent) For Period hmy:SharebasedCompensationArrangementbySharebasedPaymentAwardVestingPercentageAbsoluteBasis
1896 Number of rights linked to group on a market basis (as a percent) Concept (Percent) For Period hmy:SharebasedCompensationArrangementbySharebasedPaymentAwardVestingPercentageMarketIndexBasis
1897 2471405 - Disclosure - Share-Based Payments - Activity on Share Options (Details) Network

*

*

 http://www.harmony.co.za/role/ShareBasedPaymentsActivityOnShareOptionsDetails
1898 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1899 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1900 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1901 SARs Member hmy:ShareAppreciationRightsMember
1902 PS Member hmy:PerformanceShares1Member
1903 RS Member hmy:RestrictedSharesMember
1904 PS and RS Member hmy:PerformanceAndRestrictedSharesMember
1905 Plan Name1 [Axis] Axis hmy:PlanName1Axis
1906 Plan Name1 [Domain] Member hmy:PlanName1Domain
1907 2006 share plan Member hmy:SharePlan2006Member
1908 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1909 Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Abstract hmy:SharebasedCompensationArrangementbySharebasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward
1910 Number of options and rights (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1911 Weighted average option price (in SA rand per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1912 Options granted and accepted (in shares) Concept (Decimal) For Period hmy:NumberOfInstrumentsOtherEquityInstrumentsGrantedAndAccepted
1913 Rights vested and locked up (in shares) Concept (Decimal) For Period hmy:NumberofOtherEquityInstrumentsVestedandLockedInSharebasedPaymentArrangement
1914 Options granted (in shares) Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1915 Options granted (in SA rand per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement
1916 Options exercised (in shares) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
1917 Options exercised (in SA rand per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
1918 Options forfeited and lapsed (in shares) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
1919 Options forfeited and lapsed (in SA rand per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement
1920 Number of options and rights (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1921 Weighted average option price (in SA rand per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1922 Options and rights vested but not exercised Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement
1923 Weighted average option price (in SA rand per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement
1924 2471406 - Disclosure - Share-Based Payments - 2006 Options by Grant Date (Details) Network

*

*

 http://www.harmony.co.za/role/ShareBasedPayments2006OptionsByGrantDateDetails
1925 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1926 Plan Name1 [Axis] Axis hmy:PlanName1Axis
1927 Plan Name1 [Domain] Member hmy:PlanName1Domain
1928 2006 share plan Member hmy:SharePlan2006Member
1929 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1930 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1931 Share appreciation rights Member hmy:ShareAppreciationRightsMember
1932 Performance shares Member hmy:PerformanceShares1Member
1933 Restricted shares Member hmy:RestrictedSharesMember
1934 Award Date1 [Axis] Axis hmy:AwardDate1Axis
1935 Award Date1 [Domain] Member hmy:AwardDate1Domain
1936 November 16, 2012 Member hmy:November162012Member
1937 November 15, 2013 Member hmy:November152013Member
1938 November 17, 2014 Member hmy:November172014Member
1939 November 16, 2015 Member hmy:November162015Member
1940 February 17, 2016 Member hmy:February172016Member
1941 November 29, 2016 Member hmy:November292016Member
1942 November 15, 2017 Member hmy:November152017Member
1943 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1944 Number of options and rights (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1945 Award price (in SA rand per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1946 Remaining life (years) Concept (Decimal) As Of hmy:RemainingContractualLifeofOutstandingOtherEquityInstruments
1947 Vesting period Concept (xbrli:durationItemType) For Period hmy:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod2
1948 2471407 - Disclosure - Share-Based Payments - Activity on Awards (Details) Network

*

*

 http://www.harmony.co.za/role/ShareBasedPaymentsActivityOnAwardsDetails
1949 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1950 Plan Name1 [Axis] Axis hmy:PlanName1Axis
1951 Plan Name1 [Domain] Member hmy:PlanName1Domain
1952 2006 share plan Member hmy:SharePlan2006Member
1953 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1954 Gain realised by participants on awards traded during the year Concept (Monetary) For Period Credit hmy:OtherEquityInstrumentsExercisedGainLossRealisedbyPlanParticipants
1955 Fair value of awards exercised during the year Concept (Monetary) For Period Debit hmy:AggregateFairValueOtherEquityInstrumentsExercised
1956 2471408 - Disclosure - Share-Based Payments - Fair Value Assumption (Details) Network

*

*

 http://www.harmony.co.za/role/ShareBasedPaymentsFairValueAssumptionDetails
1957 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1958 Plan Name1 [Axis] Axis hmy:PlanName1Axis
1959 Plan Name1 [Domain] Member hmy:PlanName1Domain
1960 2006 share plan Member hmy:SharePlan2006Member
1961 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1962 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1963 Performance shares Member hmy:PerformanceShares1Member
1964 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1965 Risk-free interest rate Concept (Percent) For Period hmy:RiskFreeInterestRateOtherEquityInstrumentsGranted
1966 Expected volatility Concept (Percent) For Period hmy:ExpectedVolatilityOtherEquityInstrumentsGranted
1967 Expected dividend yield Concept (Percent) For Period hmy:ExpectedDividendAsPercentageOtherEquityInstrumentsGranted
1968 Vesting period (from grant date) Concept (Decimal) For Period hmy:OtherEquityInstrumentsLifeOtherEquityInstrumentsGrantedVestingPeriod
1969 Lambda value Concept (Pure) For Period hmy:ExpectedVolatilityLambdaValueusedinCalculation
1970 Historical data period Concept (xbrli:durationItemType) For Period hmy:ExpectedVolatilityHistoricalDataPeriod
1971 2472402 - Disclosure - Related Parties - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/RelatedPartiesNarrativeDetails
1972 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1973 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1974 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1975 Rand Refinery Member hmy:RandRefineryMember
1976 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1977 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1978 Executive directors Member hmy:ExecutiveDirectorMember
1979 Non-executive directors Member hmy:NonExecutiveDirectorMember
1980 Modise Motloba, Harmony’s deputy chairman Member hmy:DeputyChairmanMember
1981 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1982 Executive management remuneration and director's fees Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
1983 Salaries Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
1984 Retirement contributions Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
1985 Bonuses Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationOtherLongtermBenefits
1986 Remuneration from the exercising or settlement of share options Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
1987 Directors' remuneration expense Concept (Monetary) For Period Debit ifrs-full:DirectorsRemunerationExpense
1988 Value of contract per annum (up to) Concept (Monetary) For Period ifrs-full:CommitmentsMadeByEntityRelatedPartyTransactions
1989 Value of contract that has been paid Concept (Monetary) For Period Debit ifrs-full:ServicesReceivedRelatedPartyTransactions
1990 Notice period Concept (xbrli:durationItemType) For Period hmy:NoticePeriodForContractualObligationsRelatedPartyTransactions
1991 Ownership interest (as a percent) Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
1992 2472403 - Disclosure - Related Parties - Disclosure of Directors and Prescribed Officers Who Own Shares in Harmony (Details) Network

*

*

 http://www.harmony.co.za/role/RelatedPartiesDisclosureOfDirectorsAndPrescribedOfficersWhoOwnSharesInHarmonyDetails
1993 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1994 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1995 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1996 Directors Member hmy:Director1Member
1997 Prescribed officers Member hmy:Officer1Member
1998 Names Of Key Management Personnel [Axis] Axis hmy:NamesOfKeyManagementPersonnelAxis
1999 Names Of Key Management Personnel [Domain] Member hmy:NamesOfKeyManagementPersonnelDomain
2000 Andre Wilkens Member hmy:AndreWilkensDirectorMember
2001 Frank Abbott Member hmy:FrankAbbottDirectorMember
2002 Harry 'Mashego' Mashego Member hmy:HarryMashegoDirectorMember
2003 Ken Dicks Member hmy:KenDicksDirectorMember
2004 Beyers Nel Member hmy:BeyersNelPrescribedOfficerMember
2005 Johannes van Heerden Member hmy:JohannesVanHeerdenPrescribedOfficerMember
2006 Philip Tobias Member hmy:PhillipTobiasPrescribedOfficerMember
2007 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2008 Number of shares Concept (Shares) As Of hmy:KeyManagementPersonnelCompensationNumberOfSharesHeldByKeyManagementPersonnel
2009 2472404 - Disclosure - Related Parties - Disclosure of Transactions with Related Parties (Details) Network

*

*

 http://www.harmony.co.za/role/RelatedPartiesDisclosureOfTransactionsWithRelatedPartiesDetails
2010 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2011 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2012 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2013 Joint operations Member ifrs-full:JointControlOrSignificantInfluenceMember
2014 Associates Member ifrs-full:AssociatesMember
2015 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2016 Sales and services rendered to related parties Concept (Monetary) For Period Credit hmy:RevenueFromSaleOfGoodsAndRenderingOfServicesRelatedPartyTransactions
2017 Purchases and services acquired from related parties Concept (Monetary) For Period Debit hmy:PurchasesOfGoodsAndServicesReceivedRelatedPartyTransactions
2018 2473402 - Disclosure - Commitments and Contingencies - Disclosure of Capital Commitments (Details) Network

*

*

 http://www.harmony.co.za/role/CommitmentsAndContingenciesDisclosureOfCapitalCommitmentsDetails
2019 Implied Table Table

*

*

 implied:Table
2020 Other provisions, contingent liabilities and contingent assets [Abstract] Abstract hmy:OtherprovisionscontingentliabilitiesandcontingentassetsAbstract
2021 Contracts for capital expenditure Concept (Monetary) As Of Credit ifrs-full:ContractualCapitalCommitments
2022 Share of joint venture's contract for capital expenditure Concept (Monetary) As Of Credit ifrs-full:CommitmentsInRelationToJointVentures
2023 Authorised by the directors but not contracted for Concept (Monetary) As Of Credit ifrs-full:AuthorisedCapitalCommitmentsButNotContractedFor
2024 Total capital commitments Concept (Monetary) As Of Credit ifrs-full:CapitalCommitments
2025 2473403 - Disclosure - Commitments and Contingencies - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/CommitmentsAndContingenciesNarrativeDetails
2026 Disclosure of contingent liabilities [table] Table

*

*

 ifrs-full:DisclosureOfContingentLiabilitiesTable
2027 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
2028 Contingent liabilities [member] Member ifrs-full:ContingentLiabilitiesMember
2029 Liability for environmental disturbances and degradation caused before the effective date (in excess of) Member hmy:ContingentLiabilityForDecommissioningRestorationAndRehabilitationCostsPriorToEffectiveDateOfSaleMember
2030 Legal Entity [Axis] Axis dei:LegalEntityAxis
2031 Entity [Domain] Member dei:EntityDomain
2032 Rand Uranium Member hmy:RandUraniumMember
2033 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
2034 Counterparties [member] Member ifrs-full:CounterpartiesMember
2035 Rio Tinto Member hmy:RioTintoLimitedMember
2036 Joint operations [axis] Axis ifrs-full:JointOperationsAxis
2037 Entity's total for joint operations [member] Member ifrs-full:EntitysTotalForJointOperationsMember
2038 Morobe Mining Joint Ventures (MMJV) Member hmy:MorobeMiningJointVenturesMMJVPartnershipAgreementMember
2039 Disclosure of contingent liabilities [line items] LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
2040 Contractual obligations in respect of mineral tenement leases Concept (Monetary) As Of Credit hmy:ContractualCapitalCommitmentsMiningTenementLease
2041 Shares issued for purchase of rights to the royalty agreement (in shares) Concept (Shares) For Period hmy:PurchaseOfMiningTitlesSharesIssuedAsConsideration
2042 Value of shares on transaction date Concept (Monetary) For Period Credit hmy:PurchaseOfMiningTitlesValueOfSharesIssuedAsConsideration
2043 Additional cash payable when decision to mine is made Concept (Monetary) As Of Credit hmy:ConsiderationPayableUponDecisionToMine
2044 Financial exposure Concept (Monetary) As Of ifrs-full:EstimatedFinancialEffectOfContingentLiabilities
2045 Period of inactivity by the plaintiffs Concept (xbrli:durationItemType) For Period hmy:ContingentLiabilitiesPeriodOfPlaintiffInactivity
2046 2473404 - Disclosure - Commitments and Contingencies - Disclosure of Guarantees (Details) Network

*

*

 http://www.harmony.co.za/role/CommitmentsAndContingenciesDisclosureOfGuaranteesDetails
2047 Disclosure of contingent liabilities [table] Table

*

*

 ifrs-full:DisclosureOfContingentLiabilitiesTable
2048 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
2049 Contingent liabilities [member] Member ifrs-full:ContingentLiabilitiesMember
2050 Total guarantees Member ifrs-full:ContingentLiabilityForGuaranteesMember
2051 Guarantees and suretyships Member hmy:ContingentLiabilityForGuaranteesAndSuretyshipsMember
2052 Environmental guarantees Member hmy:ContingentLiabilityForEnvironmentalGuaranteesMember
2053 Disclosure of contingent liabilities [line items] LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
2054 Guarantees Concept (Monetary) As Of Credit hmy:EnvironmentalObligationGuaranteesAmount
2055 Financial assets pledged as collateral for liabilities or contingent liabilities Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
2056 2474401 - Disclosure - Subsequent Events (Details) Network

*

*

 http://www.harmony.co.za/role/SubsequentEventsDetails
2057 Disclosure of non-adjusting events after reporting period [table] Table

*

*

 ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodTable
2058 Legal Entity [Axis] Axis dei:LegalEntityAxis
2059 Entity [Domain] Member dei:EntityDomain
2060 ARM Member hmy:AfricanRainbowMineralsLimitedMember
2061 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
2062 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
2063 Shares Issued Member ifrs-full:MajorOrdinaryShareTransactionsMember
2064 Repayment of borrowings Member hmy:MajorRepaymentofBorrowingsMember
2065 Penalties Paid Member hmy:PenaltiesPaidMember
2066 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
2067 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
2068 US$200 bridge loan facility (secured loan) Member hmy:US200BridgeLoanFacilitySecuredLoanMember
2069 Disclosure of non-adjusting events after reporting period [line items] LineItems ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
2070 Shares issued and fully paid (in shares) Concept (Shares) For Period ifrs-full:IncreaseDecreaseInNumberOfOrdinarySharesIssued
2071 Shares issued price per share Concept (Share) For Period hmy:SharesIssuedPricePerShare1
2072 Proceeds from issuing shares Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
2073 Borrowings repaid Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
2074 Bridge loan Concept (Monetary) As Of Credit hmy:LineofCreditFacilityMaximumBorrowingCapacity1
2075 Administrative penalty Concept (Monetary) For Period Debit hmy:AdministrativePenalty
2076 2475402 - Disclosure - Segment Report - Narrative (Details) Network

*

*

 http://www.harmony.co.za/role/SegmentReportNarrativeDetails
2077 Disclosure of operating segments [table] Table

*

*

 ifrs-full:DisclosureOfOperatingSegmentsTable
2078 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2079 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2080 Foreign operations Member ifrs-full:ForeignCountriesMember
2081 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
2082 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
2083 Operating segments Member ifrs-full:OperatingSegmentsMember
2084 Segments [axis] Axis ifrs-full:SegmentsAxis
2085 Segments [member] Member ifrs-full:SegmentsMember
2086 Tshepong Member hmy:TshepongMember
2087 Hidden Valley Member hmy:HiddenValleyMember
2088 Disclosure of operating segments [line items] LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
2089 Number of economic products Concept (Integer) As Of hmy:NumberOfEconomicProducts
2090 Number of segments Concept (Integer) For Period hmy:NumberofOperatingSegments
2091 Additions other than through business combinations, property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
2092 Capital expenditures, net of capitalised revenue Concept (Monetary) For Period Debit hmy:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipmentNetOfCapitalisedRevenue
2093 Capitalised revenue Concept (Monetary) For Period Credit hmy:CapitalisedRevenue
2094 2475403 - Disclosure - Segment Report (Details) Network

*

*

 http://www.harmony.co.za/role/SegmentReportDetails
2095 Disclosure of operating segments [table] Table

*

*

 ifrs-full:DisclosureOfOperatingSegmentsTable
2096 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
2097 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
2098 Mining assets Member ifrs-full:MiningAssetsMember
2099 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2100 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2101 South Africa Member ifrs-full:CountryOfDomicileMember
2102 Foreign operations Member ifrs-full:ForeignCountriesMember
2103 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
2104 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
2105 Operating segments Member ifrs-full:OperatingSegmentsMember
2106 Unallocated amounts Member ifrs-full:UnallocatedAmountsMember
2107 Segments [axis] Axis ifrs-full:SegmentsAxis
2108 Segments [member] Member ifrs-full:SegmentsMember
2109 Tshepong Member hmy:TshepongMember
2110 Moab Khotsong Member hmy:MoabKhotsongMember
2111 Bambanani Member hmy:BambananiMember
2112 Joel Member hmy:JoelMember
2113 Doornkop Member hmy:DoornkopMember
2114 Target 1 Member hmy:Target1Member
2115 Kusasalethu Member hmy:KusasalethuMember
2116 Masimong Member hmy:MasimongMember
2117 Unisel Member hmy:UniselMember
2118 All other segments Member ifrs-full:AllOtherSegmentsMember
2119 Hidden Valley Member hmy:HiddenValleyMember
2120 Disclosure of operating segments [line items] LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
2121 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
2122 Production costs Concept (Monetary) For Period Debit hmy:ProductionCosts1
2123 Production profit/(loss) Concept (Monetary) For Period Credit hmy:ProductionProfitLoss
2124 Mining assets Concept (Monetary) As Of Debit ifrs-full:MiningAssets
2125 Assets Concept (Monetary) As Of Debit ifrs-full:Assets
2126 Capital expenditure Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
2127 Ounces produced Concept (num:massItemType) For Period hmy:ProductionofProvedReserves
2128 Tons milled Concept (num:massItemType) For Period hmy:ProductionMilledReserves
2129 2476402 - Disclosure - Reconciliation of Segment Information to Consolidated Income Statements and Balance Sheets (Details) Network

*

*

 http://www.harmony.co.za/role/ReconciliationOfSegmentInformationToConsolidatedIncomeStatementsAndBalanceSheetsDetails
2130 Disclosure of operating segments [table] Table

*

*

 ifrs-full:DisclosureOfOperatingSegmentsTable
2131 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
2132 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
2133 Operating segments Member ifrs-full:OperatingSegmentsMember
2134 Unallocated amounts Member ifrs-full:UnallocatedAmountsMember
2135 Disclosure of operating segments [line items] LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
2136 Total segment revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
2137 Total segment production costs Concept (Monetary) For Period Debit hmy:ProductionCosts1
2138 Production profit Concept (Monetary) For Period Credit hmy:ProductionProfitLoss
2139 Cost of sales items other than production costs Concept (Monetary) For Period Debit hmy:CostofSalesItemsOtherthanProductionCosts
2140 Amortisation and depreciation of mining assets Concept (Monetary) For Period Debit hmy:DepreciationAndAmortisationExpenseOfMiningAssets
2141 Amortisation and depreciation of assets other than mining assets Concept (Monetary) For Period Debit hmy:DepreciationAndAmortisationExpenseOfAssetsOtherThanMiningAssets
2142 Rehabilitation credit (net) Concept (Monetary) For Period Debit hmy:RehabilitationExpenditureCredit
2143 Care and maintenance cost of restructured shafts Concept (Monetary) For Period Debit hmy:CareAndMaintenanceCostsOfRestructuredShafts
2144 Employment termination and restructuring costs Concept (Monetary) For Period Debit hmy:ExpenseofRestructuringActivitiesandTerminationBenefitsExpense
2145 Share-based payments Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
2146 (Impairment)/reversal of impairment of assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
2147 Other Concept (Monetary) For Period Debit ifrs-full:MiscellaneousOtherOperatingExpense
2148 Gross profit/(loss) Concept (Monetary) For Period Credit ifrs-full:GrossProfit
2149 Corporate, administration and other expenditure Concept (Monetary) For Period Debit ifrs-full:AdministrativeExpense
2150 Exploration expenditure Concept (Monetary) For Period Debit ifrs-full:ExpenseArisingFromExplorationForAndEvaluationOfMineralResources
2151 Gains on derivatives Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnChangeInFairValueOfDerivatives
2152 Other operating expenses Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
2153 Operating profit/(loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
2154 Gain on bargain purchase Concept (Monetary) For Period Credit ifrs-full:GainRecognisedInBargainPurchaseTransaction
2155 Loss on liquidation of subsidiaries Concept (Monetary) For Period Credit ifrs-full:GainsLossesRecognisedWhenControlInSubsidiaryIsLost
2156 Share of profit/(loss) from associate Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
2157 Acquisition-related costs Concept (Monetary) For Period Debit ifrs-full:AcquisitionrelatedCostsForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination
2158 Investment income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
2159 Finance costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
2160 Profit/(loss) before taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
2161 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
2162 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
2163 Intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
2164 Restricted cash Concept (Monetary) As Of Debit ifrs-full:NoncurrentRestrictedCashAndCashEquivalents
2165 Restricted investments Concept (Monetary) As Of Debit hmy:RestrictedInvestments1
2166 Other non-current assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
2167 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
2168 Inventories Concept (Monetary) As Of Debit ifrs-full:NoncurrentInventories
2169 Other non-current receivables Concept (Monetary) As Of Debit ifrs-full:NoncurrentReceivables
2170 Derivative financial asset Concept (Monetary) As Of Debit ifrs-full:NoncurrentDerivativeFinancialAssets
2171 Current assets Abstract ifrs-full:CurrentAssetsAbstract
2172 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
2173 Restricted cash Concept (Monetary) As Of Debit ifrs-full:CurrentRestrictedCashAndCashEquivalents
2174 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
2175 Derivative financial instruments Concept (Monetary) As Of Debit ifrs-full:CurrentDerivativeFinancialAssets
2176 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
2177 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets

*

*