| Line | Label | Object Class | Period Type | Balance | Report ElementName |
|---|---|---|---|---|---|
| 1 | [832410] Notes - Impairment of assets | Network | http://xbrl.ifrs.org/role/ifrs/ias_36_2019-03-27_role-832410 | ||
| 2 | Disclosure of impairment of assets [text block] | Concept (Text Block (HTML)) | For Period | ifrs-full:DisclosureOfImpairmentOfAssetsExplanatory | |
| 3 | Disclosure of impairment loss and reversal of impairment loss [text block] | Concept (Text Block (HTML)) | For Period | ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossExplanatory | |
| 4 | Disclosure of impairment loss and reversal of impairment loss [abstract] | Abstract | ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossAbstract | ||
| 5 | Disclosure of impairment loss and reversal of impairment loss [table] | Table | ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossTable | ||
| 6 | Classes of assets [axis] | Axis | ifrs-full:ClassesOfAssetsAxis | ||
| 7 | Assets [member] | Member | ifrs-full:ClassesOfAssetsMember | ||
| 8 | Property, plant and equipment [member] | Member | ifrs-full:PropertyPlantAndEquipmentMember | ||
| 9 | Intangible assets other than goodwill [member] | Member | ifrs-full:IntangibleAssetsOtherThanGoodwillMember | ||
| 10 | Right-of-use assets [member] | Member | ifrs-full:RightofuseAssetsMember | ||
| 11 | Exploration and evaluation assets [member] | Member | ifrs-full:ExplorationAndEvaluationAssetsMember | ||
| 12 | Goodwill [member] | Member | ifrs-full:GoodwillMember | ||
| 13 | Investments accounted for using equity method [member] | Member | ifrs-full:InvestmentsAccountedForUsingEquityMethodMember | ||
| 14 | Non-current assets or disposal groups classified as held for sale [member] | Member | ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleMember | ||
| 15 | Other impaired assets [member] | Member | ifrs-full:OtherImpairedAssetsMember | ||
| 16 | Disclosure of impairment loss and reversal of impairment loss [line items] | LineItems | ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems | ||
| 17 | Impairment loss recognised in profit or loss | Concept (Monetary) | For Period | Debit | ifrs-full:ImpairmentLossRecognisedInProfitOrLoss |
| 18 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are included | LineItems | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreIncluded | ||
| 19 | Reversal of impairment loss recognised in profit or loss | Concept (Monetary) | For Period | Credit | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLoss |
| 20 | Description of line item(s) in statement of comprehensive income in which impairment losses recognised in profit or loss are reversed | LineItems | ifrs-full:DescriptionOfLineItemsInStatementOfComprehensiveIncomeInWhichImpairmentLossesRecognisedInProfitOrLossAreReversed | ||
| 21 | Impairment loss recognised in other comprehensive income | Concept (Monetary) | For Period | Debit | ifrs-full:ImpairmentLossRecognisedInOtherComprehensiveIncome |
| 22 | Reversal of impairment loss recognised in other comprehensive income | Concept (Monetary) | For Period | Credit | ifrs-full:ReversalOfImpairmentLossRecognisedInOtherComprehensiveIncome |
| 23 | Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [text block] | Concept (Text Block (HTML)) | For Period | ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitExplanatory | |
| 24 | Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [abstract] | Abstract | ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitAbstract | ||
| 25 | Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [table] | Table | ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitTable | ||
| 26 | Individual assets or cash-generating units [axis] | Axis | ifrs-full:IndividualAssetsOrCashgeneratingUnitsAxis | ||
| 27 | Entity's total for individual assets or cash-generating units [member] | Member | ifrs-full:EntitysTotalForIndividualAssetsOrCashgeneratingUnitsMember | ||
| 28 | Individual assets or cash-generating units [member] | Member | ifrs-full:IndividualAssetsOrCashgeneratingUnitsMember | ||
| 29 | Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] | LineItems | ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitLineItems | ||
| 30 | Explanation of main events and circumstances that led to recognition of impairment losses and reversals of impairment losses | Concept (Text/String) | For Period | ifrs-full:ExplanationOfMainEventsAndCircumstancesThatLedToRecognitionOfImpairmentLossesAndReversalsOfImpairmentLosses | |
| 31 | Impairment loss | Concept (Monetary) | For Period | Debit | ifrs-full:ImpairmentLoss |
| 32 | Reversal of impairment loss | Concept (Monetary) | For Period | Credit | ifrs-full:ReversalOfImpairmentLoss |
| 33 | Description of nature of individual asset | Concept (Text/String) | For Period | ifrs-full:DescriptionOfNatureOfIndividualAsset | |
| 34 | Description of reportable segment to which individual asset belongs | Concept (Text/String) | For Period | ifrs-full:DescriptionOfReportableSegmentToWhichIndividualAssetBelongs | |
| 35 | Description of cash-generating unit | Concept (Text/String) | For Period | ifrs-full:DescriptionOfCashgeneratingUnit | |
| 36 | Description of current and former way of aggregating assets | Concept (Text/String) | For Period | ifrs-full:DescriptionOfCurrentAndFormerWayOfAggregatingAssets | |
| 37 | Description of reasons for changing way cash-generating unit is identified | Concept (Text/String) | For Period | ifrs-full:DescriptionOfReasonsForChangingWayCashgeneratingUnitIsIdentified | |
| 38 | Recoverable amount of asset or cash-generating unit | Concept (Monetary) | As Of | Debit | ifrs-full:RecoverableAmountOfAssetOrCashgeneratingUnit |
| 39 | Information whether recoverable amount of asset is fair value less costs of disposal or value in use | Concept (Text/String) | For Period | ifrs-full:InformationWhetherRecoverableAmountOfAssetIsFairValueLessCostsToSellOrValueInUse | |
| 40 | Description of level of fair value hierarchy within which fair value measurement is categorised | Concept (Text/String) | For Period | ifrs-full:DescriptionOfLevelOfFairValueHierarchyWithinWhichFairValueMeasurementIsCategorised | |
| 41 | Description of valuation techniques used to measure fair value less costs of disposal | Concept (Text/String) | For Period | ifrs-full:DescriptionOfValuationTechniquesUsedToMeasureFairValueLessCostsOfDisposal | |
| 42 | Description of change in valuation technique used to measure fair value less costs of disposal | Concept (Text/String) | For Period | ifrs-full:DescriptionOfChangeInValuationTechniqueUsedToMeasureFairValueLessCostsOfDisposal | |
| 43 | Description of reasons for change in valuation technique used to measure fair value less costs of disposal | Concept (Text/String) | For Period | ifrs-full:DescriptionOfReasonsForChangeInValuationTechniqueUsedToMeasureFairValueLessCostsOfDisposal | |
| 44 | Description of key assumptions on which management has based determination of fair value less costs of disposal | Concept (Text/String) | For Period | ifrs-full:DescriptionOfKeyAssumptionsOnWhichManagementHasBasedDeterminationOfFairValueLessCostsOfDisposal | |
| 45 | Discount rate used in current measurement of fair value less costs of disposal | Concept (Percent) | As Of | ifrs-full:DiscountRateUsedInCurrentMeasurementOfFairValueLessCostsOfDisposal | |
| 46 | Discount rate used in previous measurement of fair value less costs of disposal | Concept (Percent) | As Of | ifrs-full:DiscountRateUsedInPreviousMeasurementOfFairValueLessCostsOfDisposal | |
| 47 | Discount rate used in current estimate of value in use | Concept (Percent) | As Of | ifrs-full:DescriptionOfDiscountRatesUsedInCurrentEstimateOfValueInUse | |
| 48 | Discount rate used in previous estimate of value in use | Concept (Percent) | As Of | ifrs-full:DescriptionOfDiscountRatesUsedInPreviousEstimateOfValueInUse | |
| 49 | Disclosure of impairment loss recognised or reversed for cash-generating unit [text block] | Concept (Text Block (HTML)) | For Period | ifrs-full:ExplanationOfImpairmentLossRecognisedOrReversedByClassOfAssetsAndByReportableSegment | |
| 50 | Disclosure of impairment loss recognised or reversed for cash-generating unit [abstract] | Abstract | ifrs-full:DisclosureOfImpairmentLossRecognisedOrReversedAbstract | ||
| 51 | Disclosure of impairment loss recognised or reversed for cash-generating unit [table] | Table | ifrs-full:DisclosureOfImpairmentLossRecognisedOrReversedTable | ||
| 52 | Individual assets or cash-generating units [axis] | Axis | ifrs-full:IndividualAssetsOrCashgeneratingUnitsAxis | ||
| 53 | Entity's total for individual assets or cash-generating units [member] | Member | ifrs-full:EntitysTotalForIndividualAssetsOrCashgeneratingUnitsMember | ||
| 54 | Individual assets or cash-generating units [member] | Member | ifrs-full:IndividualAssetsOrCashgeneratingUnitsMember | ||
| 55 | Classes of assets [axis] | Axis | ifrs-full:ClassesOfAssetsAxis | ||
| 56 | Assets [member] | Member | ifrs-full:ClassesOfAssetsMember | ||
| 57 | Property, plant and equipment [member] | Member | ifrs-full:PropertyPlantAndEquipmentMember | ||
| 58 | Intangible assets other than goodwill [member] | Member | ifrs-full:IntangibleAssetsOtherThanGoodwillMember | ||
| 59 | Right-of-use assets [member] | Member | ifrs-full:RightofuseAssetsMember | ||
| 60 | Exploration and evaluation assets [member] | Member | ifrs-full:ExplorationAndEvaluationAssetsMember | ||
| 61 | Goodwill [member] | Member | ifrs-full:GoodwillMember | ||
| 62 | Investments accounted for using equity method [member] | Member | ifrs-full:InvestmentsAccountedForUsingEquityMethodMember | ||
| 63 | Non-current assets or disposal groups classified as held for sale [member] | Member | ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleMember | ||
| 64 | Other impaired assets [member] | Member | ifrs-full:OtherImpairedAssetsMember | ||
| 65 | Segments [axis] | Axis | ifrs-full:SegmentsAxis | ||
| 66 | Segments [member] | Member | ifrs-full:SegmentsMember | ||
| 67 | Reportable segments [member] | Member | ifrs-full:ReportableSegmentsMember | ||
| 68 | Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] | LineItems | ifrs-full:DisclosureOfImpairmentLossRecognisedOrReversedLineItems | ||
| 69 | Impairment loss | Concept (Monetary) | For Period | Debit | ifrs-full:ImpairmentLoss |
| 70 | Reversal of impairment loss | Concept (Monetary) | For Period | Credit | ifrs-full:ReversalOfImpairmentLoss |
| 71 | Explanation of main events and circumstances that led to recognition of impairment losses and reversals of impairment losses | Concept (Text/String) | For Period | ifrs-full:ExplanationOfMainEventsAndCircumstancesThatLedToRecognitionOfImpairmentLossesAndReversalsOfImpairmentLosses | |
| 72 | Explanation of main classes of assets affected by impairment losses or reversals of impairment losses | Concept (Text/String) | For Period | ifrs-full:ExplanationOfMainClassesOfAssetsAffectedByImpairmentLossesOrReversalsOfImpairmentLosses | |
| 73 | Unallocated goodwill | Concept (Monetary) | As Of | Debit | ifrs-full:UnallocatedGoodwill |
| 74 | Explanation of goodwill not allocated to cash-generating unit | Concept (Text/String) | For Period | ifrs-full:DisclosureOfGoodwillNotAllocatedToCashgeneratingUnitExplanatory | |
| 75 | Explanation of fact that carrying amount of goodwill or intangible assets with indefinite useful lives is not significant | Concept (Text/String) | For Period | ifrs-full:ExplanationOfFactThatCarryingAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesIsNotSignificant | |
| 76 | Explanation of fact that aggregate carrying amount of goodwill or intangible assets with indefinite useful lives allocated to cash-generating units is significant | Concept (Text/String) | For Period | ifrs-full:ExplanationOfFactThatAggregateCarryingAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAllocatedToRecoverableAmountsIsSignificant | |
| 77 | Disclosure of information for cash-generating units [text block] | Concept (Text Block (HTML)) | For Period | ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesExplanatory | |
| 78 | Disclosure of information for cash-generating units [abstract] | Abstract | ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAbstract | ||
| 79 | Disclosure of information for cash-generating units [table] | Table | ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesTable | ||
| 80 | Cash-generating units [axis] | Axis | ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis | ||
| 81 | Entity's total for cash-generating units [member] | Member | ifrs-full:EntitysTotalForCashgeneratingUnitsMember | ||
| 82 | Cash-generating units [member] | Member | ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember | ||
| 83 | Aggregate cash-generating units for which amount of goodwill or intangible assets with indefinite useful lives is not significant [member] | Member | ifrs-full:AggregateNotSignificantIndividualAssetsOrCashgeneratingUnitsMember | ||
| 84 | Disclosure of information for cash-generating units [line items] | LineItems | ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesLineItems | ||
| 85 | Goodwill | Concept (Monetary) | As Of | Debit | ifrs-full:Goodwill |
| 86 | Intangible assets with indefinite useful life | Concept (Monetary) | As Of | Debit | ifrs-full:IntangibleAssetsWithIndefiniteUsefulLife |
| 87 | Description of basis on which unit's recoverable amount has been determined | Concept (Text/String) | For Period | ifrs-full:DescriptionOfBasisOnWhichUnitsRecoverableAmountHasBeenDetermined | |
| 88 | Description of key assumptions on which management has based cash flow projections | Concept (Text/String) | For Period | ifrs-full:DescriptionOfKeyAssumptionsOnWhichManagementHasBasedCashFlowProjections | |
| 89 | Description of valuation techniques used to measure fair value less costs of disposal | Concept (Text/String) | For Period | ifrs-full:DescriptionOfValuationTechniquesUsedToMeasureFairValueLessCostsOfDisposal | |
| 90 | Description of key assumptions on which management has based determination of fair value less costs of disposal | Concept (Text/String) | For Period | ifrs-full:DescriptionOfKeyAssumptionsOnWhichManagementHasBasedDeterminationOfFairValueLessCostsOfDisposal | |
| 91 | Description of management's approach to determining values assigned to key assumptions | Concept (Text/String) | For Period | ifrs-full:DescriptionOfManagementsApproachToDeterminingValuesAssignedToKeyAssumptions | |
| 92 | Description of level of fair value hierarchy within which fair value measurement is categorised | Concept (Text/String) | For Period | ifrs-full:DescriptionOfLevelOfFairValueHierarchyWithinWhichFairValueMeasurementIsCategorised | |
| 93 | Description of change in valuation technique used to measure fair value less costs of disposal | Concept (Text/String) | For Period | ifrs-full:DescriptionOfChangeInValuationTechniqueUsedToMeasureFairValueLessCostsOfDisposal | |
| 94 | Description of reasons for change in valuation technique used to measure fair value less costs of disposal | Concept (Text/String) | For Period | ifrs-full:DescriptionOfReasonsForChangeInValuationTechniqueUsedToMeasureFairValueLessCostsOfDisposal | |
| 95 | Explanation of period over which management has projected cash flows | Concept (Text/String) | For Period | ifrs-full:ExplanationOfPeriodOverWhichManagementHasProjectedCashFlows | |
| 96 | Growth rate used to extrapolate cash flow projections | Concept (Percent) | As Of | ifrs-full:DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections | |
| 97 | Description of justification for using growth rate that exceeds long-term average growth rate | Concept (Text/String) | For Period | ifrs-full:DescriptionOfJustificationForUsingGrowthRateThatExceedsLongtermAverageGrowthRate | |
| 98 | Discount rate applied to cash flow projections | Concept (Percent) | As Of | ifrs-full:DescriptionOfDiscountRatesAppliedToCashFlowProjections | |
| 99 | Amount by which unit's recoverable amount exceeds its carrying amount | Concept (Monetary) | As Of | Debit | ifrs-full:AmountByWhichUnitsRecoverableAmountExceedsItsCarryingAmount |
| 100 | Explanation of value assigned to key assumption | Concept (Text/String) | For Period | ifrs-full:ExplanationOfValueAssignedToKeyAssumption | |
| 101 | Amount by which value assigned to key assumption must change in order for unit's recoverable amount to be equal to carrying amount | Concept (Decimal) | As Of | ifrs-full:AmountByWhichValueAssignedToKeyAssumptionMustChangeInOrderForUnitsRecoverableAmountToBeEqualToCarryingAmount |