XML 145 R102.htm IDEA: XBRL DOCUMENT
v3.19.3

Taxation - Disclosure of Major Items Causing the Income Tax Provision to Differ from the South African Mining Statutory Tax Rate (Details) - ZAR (R) R in Millions | 12 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |  |  |  |
Tax on net loss at the mining statutory tax rate | R 934 | R 1,600 | R 50 |
Non-allowable deductions | (241) | (513) | (77) |
Gain on bargain purchase | 0 | 0 | 288 |
Share-based payments | (70) | (104) | (104) |
Impairment of assets | (2) | (219) | (87) |
Exploration expenditure | (36) | (74) | (50) |
Finance costs | (68) | (54) | (37) |
Other | (65) | (62) | (87) |
Movement in temporary differences related to property, plant and equipment | (1,388) | (1,248) | (1,080) |
Movements in temporary differences related to other assets and liabilities | 98 | 55 | 52 |
Difference between effective mining tax rate and statutory mining rate on mining income | (175) | (550) | 129 |
Difference between non-mining tax rate and statutory mining rate on non-mining income | 19 | 35 | 55 |
Effect on temporary differences due to changes in effective tax rates | 83 | 675 | 968 |
Prior year adjustment | (8) | 0 | 7 |
Capital allowances | 684 | 604 | 536 |
Deferred tax asset not recognised | 133 | (424) | (130) |
Total taxation (expense)/credit | R 139 | R 234 | R 510 |
Effective income and mining tax rate (%) | 5.00% | 5.00% | 347.00% |
Freegold |  |  |  |
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |  |  |  |
Deferred tax rate | 8.10% | 8.70% | 12.50% | 20.00%
Randfontein |  |  |  |
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |  |  |  |
Deferred tax rate | 4.50% | 1.80% | 3.80% | 10.10%
Avgold |  |  |  |
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |  |  |  |
Deferred tax rate | 0.00% | 0.00% | 0.00% |
Parent Company |  |  |  |
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |  |  |  |
Deferred tax rate | 25.70% | 10.50% | 19.40% | 21.10%
Mining Products | SA taxation |  |  |  |
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |  |  |  |
Mining statutory tax rate | 34.00% | 34.00% | 34.00% |

X
- Definition Deferred Tax Rate + References No definition available. + Details
Name: | hmy_DeferredTaxRate
Namespace Prefix: | hmy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax Effect From Change In Deferred Tax Rate + References No definition available. + Details
Name: | hmy_TaxEffectFromChangeInDeferredTaxRate
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Effect Of Capital Allowances + References No definition available. + Details
Name: | hmy_TaxEffectOfCapitalAllowances
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Effect Of Change In Temporary Differences, Other Assets And Liabilities + References No definition available. + Details
Name: | hmy_TaxEffectOfChangeInTemporaryDifferencesOtherAssetsAndLiabilities
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Effect Of Change In Temporary Differences, Property, Plant And Equipment + References No definition available. + Details
Name: | hmy_TaxEffectOfChangeInTemporaryDifferencesPropertyPlantAndEquipment
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Effect Of Deferred Tax Asset Not Recognised + References No definition available. + Details
Name: | hmy_TaxEffectOfDeferredTaxAssetNotRecognised
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Effect Of Difference Between Effective Mining Tax Rate And Statutory Mining Rate On Mining Income + References No definition available. + Details
Name: | hmy_TaxEffectOfDifferenceBetweenEffectiveMiningTaxRateAndStatutoryMiningRateOnMiningIncome
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Effect Of Difference Between Effective Non-Mining Tax Rate And Statutory Non-Mining Rate On Non-Mining Income + References No definition available. + Details
Name: | hmy_TaxEffectOfDifferenceBetweenNonMiningTaxRateAndStatutoryMiningRateOnNonMiningIncome
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Effect Of Expense Not Deductible In Determining Taxable Profit (Tax Loss), Exploration Expenditure + References No definition available. + Details
Name: | hmy_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLossExplorationExpenditure
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Effect Of Expense Not Deductible In Determining Taxable Profit (Tax Loss), Finance Costs + References No definition available. + Details
Name: | hmy_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLossFinanceCosts
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Effect Of Expense Not Deductible In Determining Taxable Profit (Tax Loss), Gain On Bargain Purchase + References No definition available. + Details
Name: | hmy_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLossGainOnBargainPurchase
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Effect Of Expense Not Deductible In Determining Taxable Profit (Tax Loss), Impairment Of Assets + References No definition available. + Details
Name: | hmy_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLossImpairmentofAssets
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Effect Of Expense Not Deductible In Determining Taxable Profit (Tax Loss), Other + References No definition available. + Details
Name: | hmy_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLossOther
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Effect Of Expense Not Deductible In Determining Taxable Profit (Tax Loss), Share-Based Payments + References No definition available. + Details
Name: | hmy_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLossShareBasedPayments
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Effect Of Prior Year Income Taxes + References No definition available. + Details
Name: | hmy_TaxEffectOfPriorYearIncomeTaxes
Namespace Prefix: | hmy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The applicable income tax rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_c_ii&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_ApplicableTaxRate
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The tax expense (income) divided by the accounting profit. [Refer: Accounting profit] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_c_ii&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_AverageEffectiveTaxRate
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2018-01-01 -Paragraph 35 -Subparagraph b -Clause viii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=26&date=2018-03-01&anchor=para_35_b_viii&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2018-01-01 -Paragraph 23 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2018-03-01&anchor=para_23_h&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 79 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_79&doctype=Standard -URIDate 2018-03-16 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph c -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_c_i&doctype=Standard -URIDate 2018-03-16 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 82 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_82_d&doctype=Standard -URIDate 2018-03-16 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_c_ii&doctype=Standard -URIDate 2018-03-16 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2018-01-01 -Paragraph B13 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_B13_g&doctype=Appendix&seq=2 -URIDate 2018-03-16 + Details
Name: | ifrs-full_IncomeTaxExpenseContinuingOperations
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | ifrs-full_ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to expenses not deductible in determining taxable profit (tax loss). [Refer: Accounting profit] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph c -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_c_i&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The product of the accounting profit multiplied by the applicable tax rate(s). [Refer: Accounting profit; Applicable tax rate] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph c -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_c_i&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_TaxExpenseIncomeAtApplicableTaxRate
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=hmy_FreegoldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=hmy_RandfonteinEstatesLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=hmy_AvgoldLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ProductsAndServicesAxis=hmy_MiningProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=ifrs-full_CountryOfDomicileMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |