3.22.4 html 438 359 1 true 122 0 false 12 false false R1.htm 1001 - Document - Cover Sheet http://www.nexgenenergy.ca/role/Cover Cover Cover 1 false false R2.htm 1002 - Statement - Consolidated Statements of Financial Position Sheet http://www.nexgenenergy.ca/role/ConsolidatedStatementsOfFinancialPosition Consolidated Statements of Financial Position Statements 2 false false R3.htm 1003 - Statement - Consolidated Statements of Net Loss and Comprehensive Loss Sheet http://www.nexgenenergy.ca/role/ConsolidatedStatementsOfNetLossAndComprehensiveLoss Consolidated Statements of Net Loss and Comprehensive Loss Statements 3 false false R4.htm 1004 - Statement - Consolidated Statements of Cash Flows Sheet http://www.nexgenenergy.ca/role/ConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows Statements 4 false false R5.htm 1005 - Statement - Consolidated Statements of Changes in Equity Sheet http://www.nexgenenergy.ca/role/ConsolidatedStatementsOfChangesInEquity Consolidated Statements of Changes in Equity Statements 5 false false R6.htm 1006 - Disclosure - REPORTING ENTITY Sheet http://www.nexgenenergy.ca/role/ReportingEntity REPORTING ENTITY Notes 6 false false R7.htm 1007 - Disclosure - NATURE OF OPERATIONS Sheet http://www.nexgenenergy.ca/role/NatureOfOperations NATURE OF OPERATIONS Notes 7 false false R8.htm 1008 - Disclosure - BASIS OF PREPARATION Sheet http://www.nexgenenergy.ca/role/BasisOfPreparation BASIS OF PREPARATION Notes 8 false false R9.htm 1009 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES Sheet http://www.nexgenenergy.ca/role/SignificantAccountingPolicies SIGNIFICANT ACCOUNTING POLICIES Notes 9 false false R10.htm 1010 - Disclosure - MARKETABLE SECURITIES Sheet http://www.nexgenenergy.ca/role/MarketableSecurities MARKETABLE SECURITIES Notes 10 false false R11.htm 1011 - Disclosure - EXPLORATION AND EVALUATION ASSETS Sheet http://www.nexgenenergy.ca/role/ExplorationAndEvaluationAssets EXPLORATION AND EVALUATION ASSETS Notes 11 false false R12.htm 1012 - Disclosure - PROPERTY AND EQUIPMENT Sheet http://www.nexgenenergy.ca/role/PropertyAndEquipment PROPERTY AND EQUIPMENT Notes 12 false false R13.htm 1013 - Disclosure - FLOW-THROUGH SHARE PREMIUM LIABILITY Sheet http://www.nexgenenergy.ca/role/FlowThroughSharePremiumLiability FLOW-THROUGH SHARE PREMIUM LIABILITY Notes 13 false false R14.htm 1014 - Disclosure - CONVERTIBLE DEBENTURES Sheet http://www.nexgenenergy.ca/role/ConvertibleDebentures CONVERTIBLE DEBENTURES Notes 14 false false R15.htm 1015 - Disclosure - LEASES Sheet http://www.nexgenenergy.ca/role/Leases LEASES Notes 15 false false R16.htm 1016 - Disclosure - SHARE CAPITAL Sheet http://www.nexgenenergy.ca/role/ShareCapital SHARE CAPITAL Notes 16 false false R17.htm 1017 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION Sheet http://www.nexgenenergy.ca/role/SupplementalCashFlowInformation SUPPLEMENTAL CASH FLOW INFORMATION Notes 17 false false R18.htm 1018 - Disclosure - RELATED PARTY TRANSACTIONS Sheet http://www.nexgenenergy.ca/role/RelatedPartyTransactions RELATED PARTY TRANSACTIONS Notes 18 false false R19.htm 1019 - Disclosure - CAPITAL MANAGEMENT Sheet http://www.nexgenenergy.ca/role/CapitalManagement CAPITAL MANAGEMENT Notes 19 false false R20.htm 1020 - Disclosure - FINANCIAL INSTRUMENTS AND RISK MANAGEMENT Sheet http://www.nexgenenergy.ca/role/FinancialInstrumentsAndRiskManagement FINANCIAL INSTRUMENTS AND RISK MANAGEMENT Notes 20 false false R21.htm 1021 - Disclosure - NON-CONTROLLING INTERESTS Sheet http://www.nexgenenergy.ca/role/NonControllingInterests NON-CONTROLLING INTERESTS Notes 21 false false R22.htm 1022 - Disclosure - INCOME TAXES Sheet http://www.nexgenenergy.ca/role/IncomeTaxes INCOME TAXES Notes 22 false false R23.htm 1023 - Disclosure - SEGMENT INFORMATION Sheet http://www.nexgenenergy.ca/role/SegmentInformation SEGMENT INFORMATION Notes 23 false false R24.htm 1024 - Disclosure - SUBSEQUENT EVENTS Sheet http://www.nexgenenergy.ca/role/SubsequentEvents SUBSEQUENT EVENTS Notes 24 false false R25.htm 1025 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies) Sheet http://www.nexgenenergy.ca/role/SignificantAccountingPoliciesPolicies SIGNIFICANT ACCOUNTING POLICIES (Policies) Policies 25 false false R26.htm 1026 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Tables) Sheet http://www.nexgenenergy.ca/role/SignificantAccountingPoliciesTables SIGNIFICANT ACCOUNTING POLICIES (Tables) Tables http://www.nexgenenergy.ca/role/SignificantAccountingPolicies 26 false false R27.htm 1027 - Disclosure - MARKETABLE SECURITIES (Tables) Sheet http://www.nexgenenergy.ca/role/MarketableSecuritiesTables MARKETABLE SECURITIES (Tables) Tables http://www.nexgenenergy.ca/role/MarketableSecurities 27 false false R28.htm 1028 - Disclosure - EXPLORATION AND EVALUATION ASSETS (Tables) Sheet http://www.nexgenenergy.ca/role/ExplorationAndEvaluationAssetsTables EXPLORATION AND EVALUATION ASSETS (Tables) Tables http://www.nexgenenergy.ca/role/ExplorationAndEvaluationAssets 28 false false R29.htm 1029 - Disclosure - PROPERTY AND EQUIPMENT (Tables) Sheet http://www.nexgenenergy.ca/role/PropertyAndEquipmentTables PROPERTY AND EQUIPMENT (Tables) Tables http://www.nexgenenergy.ca/role/PropertyAndEquipment 29 false false R30.htm 1030 - Disclosure - FLOW-THROUGH SHARE PREMIUM LIABILITY (Tables) Sheet http://www.nexgenenergy.ca/role/FlowThroughSharePremiumLiabilityTables FLOW-THROUGH SHARE PREMIUM LIABILITY (Tables) Tables http://www.nexgenenergy.ca/role/FlowThroughSharePremiumLiability 30 false false R31.htm 1031 - Disclosure - CONVERTIBLE DEBENTURES (Tables) Sheet http://www.nexgenenergy.ca/role/ConvertibleDebenturesTables CONVERTIBLE DEBENTURES (Tables) Tables http://www.nexgenenergy.ca/role/ConvertibleDebentures 31 false false R32.htm 1032 - Disclosure - LEASES (Tables) Sheet http://www.nexgenenergy.ca/role/LeasesTables LEASES (Tables) Tables http://www.nexgenenergy.ca/role/Leases 32 false false R33.htm 1033 - Disclosure - SHARE CAPITAL - (Tables) Sheet http://www.nexgenenergy.ca/role/ShareCapitalTables SHARE CAPITAL - (Tables) Tables http://www.nexgenenergy.ca/role/ShareCapital 33 false false R34.htm 1034 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION (Tables) Sheet http://www.nexgenenergy.ca/role/SupplementalCashFlowInformationTables SUPPLEMENTAL CASH FLOW INFORMATION (Tables) Tables http://www.nexgenenergy.ca/role/SupplementalCashFlowInformation 34 false false R35.htm 1035 - Disclosure - RELATED PARTY TRANSACTIONS (Tables) Sheet http://www.nexgenenergy.ca/role/RelatedPartyTransactionsTables RELATED PARTY TRANSACTIONS (Tables) Tables http://www.nexgenenergy.ca/role/RelatedPartyTransactions 35 false false R36.htm 1036 - Disclosure - CAPITAL MANAGEMENT (Tables) Sheet http://www.nexgenenergy.ca/role/CapitalManagementTables CAPITAL MANAGEMENT (Tables) Tables http://www.nexgenenergy.ca/role/CapitalManagement 36 false false R37.htm 1037 - Disclosure - FINANCIAL INSTRUMENTS AND RISK MANAGEMENT (Tables) Sheet http://www.nexgenenergy.ca/role/FinancialInstrumentsAndRiskManagementTables FINANCIAL INSTRUMENTS AND RISK MANAGEMENT (Tables) Tables http://www.nexgenenergy.ca/role/FinancialInstrumentsAndRiskManagement 37 false false R38.htm 1038 - Disclosure - NON-CONTROLLING INTERESTS (Tables) Sheet http://www.nexgenenergy.ca/role/NonControllingInterestsTables NON-CONTROLLING INTERESTS (Tables) Tables http://www.nexgenenergy.ca/role/NonControllingInterests 38 false false R39.htm 1039 - Disclosure - INCOME TAXES (Tables) Sheet http://www.nexgenenergy.ca/role/IncomeTaxesTables INCOME TAXES (Tables) Tables http://www.nexgenenergy.ca/role/IncomeTaxes 39 false false R40.htm 1040 - Disclosure - Reporting Entity - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/ReportingEntityAdditionalInformationDetail Reporting Entity - Additional Information (Detail) Details 40 false false R41.htm 1041 - Disclosure - Nature of Operations - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/NatureOfOperationsAdditionalInformationDetail Nature of Operations - Additional Information (Detail) Details 41 false false R42.htm 1042 - Disclosure - Significant Accounting Policies - Summary of Company's Ownership Percentage in Each of Its Subsidiaries (Detail) Sheet http://www.nexgenenergy.ca/role/SignificantAccountingPoliciesSummaryOfCompanysOwnershipPercentageInEachOfItsSubsidiariesDetail Significant Accounting Policies - Summary of Company's Ownership Percentage in Each of Its Subsidiaries (Detail) Details 42 false false R43.htm 1043 - Disclosure - Significant Accounting Policies - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/SignificantAccountingPoliciesAdditionalInformationDetail Significant Accounting Policies - Additional Information (Detail) Details 43 false false R44.htm 1044 - Disclosure - Significant Accounting Policies - Summary of Depreciation Over the Estimated Useful Lives of Each Significant Component (Detail) Sheet http://www.nexgenenergy.ca/role/SignificantAccountingPoliciesSummaryOfDepreciationOverTheEstimatedUsefulLivesOfEachSignificantComponentDetail Significant Accounting Policies - Summary of Depreciation Over the Estimated Useful Lives of Each Significant Component (Detail) Details 44 false false R45.htm 1045 - Disclosure - Significant Accounting Policies - Schedule Of Accounting Policy For Financial Instruments (Detail) Sheet http://www.nexgenenergy.ca/role/SignificantAccountingPoliciesScheduleOfAccountingPolicyForFinancialInstrumentsDetail Significant Accounting Policies - Schedule Of Accounting Policy For Financial Instruments (Detail) Details 45 false false R46.htm 1046 - Disclosure - Marketable Securities - Summary of Detailed Information about Disposal of Marketable Securities (Detail) Sheet http://www.nexgenenergy.ca/role/MarketableSecuritiesSummaryOfDetailedInformationAboutDisposalOfMarketableSecuritiesDetail Marketable Securities - Summary of Detailed Information about Disposal of Marketable Securities (Detail) Details 46 false false R47.htm 1047 - Disclosure - Marketable Securities - Summary of Detailed Information about Disposal of Marketable Securities (Parenthetical) (Detail) Sheet http://www.nexgenenergy.ca/role/MarketableSecuritiesSummaryOfDetailedInformationAboutDisposalOfMarketableSecuritiesParentheticalDetail Marketable Securities - Summary of Detailed Information about Disposal of Marketable Securities (Parenthetical) (Detail) Details 47 false false R48.htm 1048 - Disclosure - Marketable Securities - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/MarketableSecuritiesAdditionalInformationDetail Marketable Securities - Additional Information (Detail) Details 48 false false R49.htm 1049 - Disclosure - Exploration and Evaluation Assets - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/ExplorationAndEvaluationAssetsAdditionalInformationDetail Exploration and Evaluation Assets - Additional Information (Detail) Details 49 false false R50.htm 1050 - Disclosure - Exploration and Evaluation Assets - Summary of Capitalized Costs on Projects (Detail) Sheet http://www.nexgenenergy.ca/role/ExplorationAndEvaluationAssetsSummaryOfCapitalizedCostsOnProjectsDetail Exploration and Evaluation Assets - Summary of Capitalized Costs on Projects (Detail) Details 50 false false R51.htm 1051 - Disclosure - Property and Equipment - Summary of Detailed Information about Property, Plant and Equipment (Detail) Sheet http://www.nexgenenergy.ca/role/PropertyAndEquipmentSummaryOfDetailedInformationAboutPropertyPlantAndEquipmentDetail Property and Equipment - Summary of Detailed Information about Property, Plant and Equipment (Detail) Details 51 false false R52.htm 1052 - Disclosure - Flow-through share premium liability - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/FlowThroughSharePremiumLiabilityAdditionalInformationDetail Flow-through share premium liability - Additional Information (Detail) Details 52 false false R53.htm 1053 - Disclosure - Flow-through share premium liability - Summary of Continuity of the Flow-through Share Premium Liability (Detail) Sheet http://www.nexgenenergy.ca/role/FlowThroughSharePremiumLiabilitySummaryOfContinuityOfTheFlowThroughSharePremiumLiabilityDetail Flow-through share premium liability - Summary of Continuity of the Flow-through Share Premium Liability (Detail) Details 53 false false R54.htm 1054 - Disclosure - Convertible Debentures - Summary of Detailed Information about Convertible Debentures (Detail) Sheet http://www.nexgenenergy.ca/role/ConvertibleDebenturesSummaryOfDetailedInformationAboutConvertibleDebenturesDetail Convertible Debentures - Summary of Detailed Information about Convertible Debentures (Detail) Details 54 false false R55.htm 1055 - Disclosure - Convertible Debentures - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/ConvertibleDebenturesAdditionalInformationDetail Convertible Debentures - Additional Information (Detail) Details 55 false false R56.htm 1056 - Disclosure - Convertible Debentures - Summary of Detailed Information about Convertible Debentures, Valuation Assumptions (Detail) Sheet http://www.nexgenenergy.ca/role/ConvertibleDebenturesSummaryOfDetailedInformationAboutConvertibleDebenturesValuationAssumptionsDetail Convertible Debentures - Summary of Detailed Information about Convertible Debentures, Valuation Assumptions (Detail) Details 56 false false R57.htm 1057 - Disclosure - Leases - Schedule of Right-of-use asset (Detail) Sheet http://www.nexgenenergy.ca/role/LeasesScheduleOfRightOfUseAssetDetail Leases - Schedule of Right-of-use asset (Detail) Details 57 false false R58.htm 1058 - Disclosure - Leases - Schedule of Lease obligation adoption (Detail) Sheet http://www.nexgenenergy.ca/role/LeasesScheduleOfLeaseObligationAdoptionDetail Leases - Schedule of Lease obligation adoption (Detail) Details 58 false false R59.htm 1059 - Disclosure - Leases - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/LeasesAdditionalInformationDetail Leases - Additional Information (Detail) Details 59 false false R60.htm 1060 - Disclosure - Leases - Summary of Amounts recognized in consolidated statements of net loss (Detail) Sheet http://www.nexgenenergy.ca/role/LeasesSummaryOfAmountsRecognizedInConsolidatedStatementsOfNetLossDetail Leases - Summary of Amounts recognized in consolidated statements of net loss (Detail) Details 60 false false R61.htm 1061 - Disclosure - Share Capital - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/ShareCapitalAdditionalInformationDetail Share Capital - Additional Information (Detail) Details 61 false false R62.htm 1062 - Disclosure - Share Capital - Summary of Stock Option Transactions and the Number of Stock Options (Detail) Sheet http://www.nexgenenergy.ca/role/ShareCapitalSummaryOfStockOptionTransactionsAndTheNumberOfStockOptionsDetail Share Capital - Summary of Stock Option Transactions and the Number of Stock Options (Detail) Details 62 false false R63.htm 1063 - Disclosure - Share Capital - Summary of Company's Stock Options Outstanding and Exercisable (Detail) Sheet http://www.nexgenenergy.ca/role/ShareCapitalSummaryOfCompanysStockOptionsOutstandingAndExercisableDetail Share Capital - Summary of Company's Stock Options Outstanding and Exercisable (Detail) Details 63 false false R64.htm 1064 - Disclosure - Share Capital - Summary of Weighted Average Grant Date Fair Values (Detail) Sheet http://www.nexgenenergy.ca/role/ShareCapitalSummaryOfWeightedAverageGrantDateFairValuesDetail Share Capital - Summary of Weighted Average Grant Date Fair Values (Detail) Details 64 false false R65.htm 1065 - Disclosure - Supplemental Cash Flow Information -Summary Of Detailed Information About Non Cash Investing And Financing Activities (Detail ) Sheet http://www.nexgenenergy.ca/role/SupplementalCashFlowInformationSummaryOfDetailedInformationAboutNonCashInvestingAndFinancingActivitiesDetail Supplemental Cash Flow Information -Summary Of Detailed Information About Non Cash Investing And Financing Activities (Detail ) Details 65 false false R66.htm 1066 - Disclosure - Supplemental Cash Flow Information - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/SupplementalCashFlowInformationAdditionalInformationDetail Supplemental Cash Flow Information - Additional Information (Detail) Details 66 false false R67.htm 1067 - Disclosure - Related Party Transactions - Disclosure of Information About Key Management Personnel (Detail) Sheet http://www.nexgenenergy.ca/role/RelatedPartyTransactionsDisclosureOfInformationAboutKeyManagementPersonnelDetail Related Party Transactions - Disclosure of Information About Key Management Personnel (Detail) Details 67 false false R68.htm 1068 - Disclosure - Related Party Transactions - Disclosure of Information About Key Management Personnel (Parenthetical) (Detail) Sheet http://www.nexgenenergy.ca/role/RelatedPartyTransactionsDisclosureOfInformationAboutKeyManagementPersonnelParentheticalDetail Related Party Transactions - Disclosure of Information About Key Management Personnel (Parenthetical) (Detail) Details 68 false false R69.htm 1069 - Disclosure - Related Party Transactions - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/RelatedPartyTransactionsAdditionalInformationDetail Related Party Transactions - Additional Information (Detail) Details 69 false false R70.htm 1070 - Disclosure - Capital Management - Summary of Disclosure Of Detailed Information About Management Capital Explanatory (Detail) Sheet http://www.nexgenenergy.ca/role/CapitalManagementSummaryOfDisclosureOfDetailedInformationAboutManagementCapitalExplanatoryDetail Capital Management - Summary of Disclosure Of Detailed Information About Management Capital Explanatory (Detail) Details 70 false false R71.htm 1071 - Disclosure - Financial Instruments And Risk Management -Summary Of Maximum Exposure To Credit Risk (Detail) Sheet http://www.nexgenenergy.ca/role/FinancialInstrumentsAndRiskManagementSummaryOfMaximumExposureToCreditRiskDetail Financial Instruments And Risk Management -Summary Of Maximum Exposure To Credit Risk (Detail) Details 71 false false R72.htm 1072 - Disclosure - Financial Instruments And Risk Management - Summary of Detailed Information About Significant Undiscounted Commitments (Detail) Sheet http://www.nexgenenergy.ca/role/FinancialInstrumentsAndRiskManagementSummaryOfDetailedInformationAboutSignificantUndiscountedCommitmentsDetail Financial Instruments And Risk Management - Summary of Detailed Information About Significant Undiscounted Commitments (Detail) Details 72 false false R73.htm 1073 - Disclosure - Financial Instruments - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/FinancialInstrumentsAdditionalInformationDetail Financial Instruments - Additional Information (Detail) Details 73 false false R74.htm 1074 - Disclosure - Non-controlling Interests - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/NonControllingInterestsAdditionalInformationDetail Non-controlling Interests - Additional Information (Detail) Details 74 false false R75.htm 1075 - Disclosure - Non-controlling Interests - Summary of Financial Information for IsoEnergy Ltd (Detail) Sheet http://www.nexgenenergy.ca/role/NonControllingInterestsSummaryOfFinancialInformationForIsoenergyLtdDetail Non-controlling Interests - Summary of Financial Information for IsoEnergy Ltd (Detail) Details 75 false false R76.htm 1076 - Disclosure - Income Taxes - Reconciliation of Income Taxes at Statutory Rates (Detail) Sheet http://www.nexgenenergy.ca/role/IncomeTaxesReconciliationOfIncomeTaxesAtStatutoryRatesDetail Income Taxes - Reconciliation of Income Taxes at Statutory Rates (Detail) Details 76 false false R77.htm 1077 - Disclosure - Income Taxes - Summary of Income Tax (Recovery) Expense (Detail) Sheet http://www.nexgenenergy.ca/role/IncomeTaxesSummaryOfIncomeTaxRecoveryExpenseDetail Income Taxes - Summary of Income Tax (Recovery) Expense (Detail) Details 77 false false R78.htm 1078 - Disclosure - Income Taxes - Disclosure Of Change In Fair Value of Convertible Debentures Attributable To Credit Risk Fluctuation (Detail) Sheet http://www.nexgenenergy.ca/role/IncomeTaxesDisclosureOfChangeInFairValueOfConvertibleDebenturesAttributableToCreditRiskFluctuationDetail Income Taxes - Disclosure Of Change In Fair Value of Convertible Debentures Attributable To Credit Risk Fluctuation (Detail) Details 78 false false R79.htm 1079 - Disclosure - Income Taxes - Summary of Deferred Tax (Assets) and Liabilities (Detail) Sheet http://www.nexgenenergy.ca/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndLiabilitiesDetail Income Taxes - Summary of Deferred Tax (Assets) and Liabilities (Detail) Details 79 false false R80.htm 1080 - Disclosure - Income Taxes - Summary of Movement in Deferred Tax Liability (Detail) Sheet http://www.nexgenenergy.ca/role/IncomeTaxesSummaryOfMovementInDeferredTaxLiabilityDetail Income Taxes - Summary of Movement in Deferred Tax Liability (Detail) Details 80 false false R81.htm 1081 - Disclosure - Income Taxes - Significant Components of Temporary Differences, Unused Tax Credits and Unused Tax Losses (Detail) Sheet http://www.nexgenenergy.ca/role/IncomeTaxesSignificantComponentsOfTemporaryDifferencesUnusedTaxCreditsAndUnusedTaxLossesDetail Income Taxes - Significant Components of Temporary Differences, Unused Tax Credits and Unused Tax Losses (Detail) Details 81 false false R82.htm 1082 - Disclosure - Subsequent Event - Additional Information (Detail) Sheet http://www.nexgenenergy.ca/role/SubsequentEventAdditionalInformationDetail Subsequent Event - Additional Information (Detail) Details 82 false false All Reports Book All Reports [ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 1 fact(s) appearing in ix:hidden were eligible for transformation: dei:CurrentFiscalYearEndDate - d358580d40f.htm 7 d358580d40f.htm d358580dex993.htm d358580dex991.htm d358580dex9910.htm d358580dex9911.htm d358580dex9912.htm d358580dex9913.htm d358580dex9914.htm d358580dex992.htm d358580dex994.htm d358580dex995.htm d358580dex996.htm d358580dex997.htm d358580dex998.htm d358580dex999.htm nxe-20221231.xsd nxe-20221231_cal.xml nxe-20221231_def.xml nxe-20221231_lab.xml nxe-20221231_pre.xml g358580g0128014358459.jpg g358580g0128014358803.jpg http://xbrl.sec.gov/dei/2022 https://xbrl.ifrs.org/taxonomy/2022-03-24/ifrs-full true true