NexGen Energy Ltd. (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

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61 Impairment of exploration and evaluation assets Concept (Monetary) For Period Debit nxe:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossExplorationAndEvaluationAssets
62 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
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68 Loss (profit) from operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
69 Deferred income tax recovery Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncome
70 Other Comprehensive Income Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
71 Change in fair value of convertible debentures attributable to the change in credit risk Concept (Monetary) For Period Credit ifrs-full:GainLossOnDesignationOfFinancialInstrumentAsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedToManageCreditRisk
72 Shareholders of NexGen Energy Ltd. Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
73 Non-controlling interests in IsoEnergy Ltd. Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
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80 Shareholders of NexGen Energy Ltd. Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
81 Non-controlling interests in IsoEnergy Ltd. Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
82 Total comprehensive loss (profit) for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
83 Loss (profit) per common share attributable to the Company's common shareholders Abstract ifrs-full:ProfitLossAttributableToAbstract
84 Basic loss (profit) per common share Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
85 Diluted loss (profit) per common share Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
86 Weighted average number of common shares outstanding Abstract ifrs-full:WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract
87 Basic Concept (Shares) For Period ifrs-full:WeightedAverageShares
88 Diluted Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
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97 Non-controlling Interests [member] Member ifrs-full:NoncontrollingInterestsMember
98 Effect of overlay approach reclassification [axis] Axis ifrs-full:EffectOfOverlayApproachReclassificationAxis
99 In accordance with IFRS 9 [member] Member ifrs-full:InAccordanceWithIFRS9Member
100 Impact of Adopting IFRS 9 [member] Member nxe:IFRS9Member
101 Statement [LineItems] LineItems nxe:StatementLineItems
102 Beginning balance Concept (Monetary) As Of Credit ifrs-full:Equity
103 Beginning balance, shares Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
104 Exercise of warrants Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughExerciseOfWarrantsEquity
105 Exercise of warrants, shares Concept (Shares) For Period nxe:IncreaseDecreaseInNumberOfSharesOutstandingExerciseOfWarrants
106 Exercise of options Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughExerciseOfOptions
107 Exercise of options, shares Concept (Shares) For Period nxe:IncreaseDecreaseInNumberOfSharesOutstandingExerciseOfOptions
108 Share issuance costs Concept (Monetary) For Period Debit ifrs-full:ShareIssueRelatedCost
109 Issue of shares for cash from private placement Concept (Monetary) For Period Credit nxe:IncreaseDecreaseThroughPrivatePlacement
110 Issue of shares for cash from private placement, shares Concept (Shares) For Period nxe:IncreaseDecreaseThroughPrivatePlacementShares
111 Issue of shares on convertible debenture financing Concept (Monetary) For Period Credit ifrs-full:IssueOfConvertibleInstruments
112 Issue of shares on convertible debenture financing, shares Concept (Shares) For Period nxe:IncreaseDecreaseInNumberOfSharesOutstandingIssueOfSharesOnConvertibleDebentureFinancing
113 Issue of shares on convertible debenture interest payment Concept (Monetary) For Period Credit nxe:IncreaseDecreaseThroughIssueOfSharesOnConvertibleDebentureInterestPayment
114 Issue of shares on convertible debenture interest payment, shares Concept (Shares) For Period nxe:IncreaseDecreaseInNumberOfSharesOutstandingIssueOfSharesOnConvertibleDebentureInterestPayment
115 Issue of shares for exploration and evaluation assets Concept (Monetary) For Period Credit nxe:IncreaseDecreaseThroughIssueOfSharesForExplorationAndEvaluationAssets
116 Issue of shares for exploration and evaluation assets, shares Concept (Shares) For Period nxe:IncreaseDecreaseInNumberOfSharesOutstandingIssueOfSharesForExplorationAndEvaluationAssets
117 Share-based payments Concept (Monetary) For Period Credit nxe:ShareBasedPayments
118 Reserve re-allocation for expired warrants Concept (Monetary) For Period Credit nxe:ReserveReallocationForExpiredWarrants
119 Issue of shares of subsidiary to non-controlling interests Concept (Monetary) For Period Credit nxe:IssueOfSharesOfSubsidiaryToNonControllingInterests
120 Profit (loss) for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
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122 Ending balance Concept (Monetary) As Of Credit ifrs-full:Equity
123 Ending balance, shares Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
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132 Amortization of deferred lease inducement Concept (Monetary) For Period Credit nxe:AdjustmentsForAmortizationOfDeferredLeaseInducement
133 Impairment of exploration and evaluation assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossExplorationAndEvaluationAssets
134 Unrealized foreign exchange gain on cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForUnrealisedForeignExchangeLossesGains
135 Deferred income tax recovery Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDeferredTaxExpense
136 Mark to market loss (gain) on convertible debentures Concept (Monetary) For Period Credit nxe:AdjustmentsForMarkToMarketLossGainOnConvertibleDebentures
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151 Cash from exercise of options and warrants, net of share issuance costs Concept (Monetary) For Period Debit nxe:ProceedsFromExerciseOfOptionsAndWarrants
152 Shares issued for cash from private placements, net of share issuance costs Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
153 Shares of subsidiary issued to non-controlling interests for cash, net of share issuance costs Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingOtherEquityInstruments
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158 Change in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
159 Cash and cash equivalents, beginning of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
160 Effect of exchange rate fluctuations on cash held Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
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164 Cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashEquivalents
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765 Loss from operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
766 Loss and comprehensive loss Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
767 Net cash flow from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
768 Net cash flow from investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
769 Net cash flow from financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
770 Net increase (decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
771 167 - Disclosure - Supplemental Disclosure with Respect to Cash Flows - Additional Information (Detail) Network

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 http://imetrix.edgar-online.com/taxonomy/role/DisclosureSupplementalDisclosureWithRespectToCashFlowsAdditionalInformation
772 Schedule of cash flow supplemental [table] Table

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 nxe:ScheduleOfCashFlowSupplementalTable
773 Classes of liabilities [axis] Axis ifrs-full:ClassesOfLiabilitiesAxis
774 Liabilities [member] Member ifrs-full:LiabilitiesMember
775 Included in accounts payable and accrued liabilities [member] Member nxe:IncludedInAccountsPayableAndAccruedLiabilitiesMember
776 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
777 Equity [member] Member ifrs-full:EquityMember
778 Reserves [member] Member ifrs-full:OtherReservesMember
779 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
780 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
781 IsoEnergy Ltd. [member] Member nxe:IsoenergyLtdMember
782 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
783 Assets [member] Member ifrs-full:ClassesOfAssetsMember
784 Dufferin Lake Property [member] Member nxe:DufferinLakePropertyMember
785 Geiger Property [member] Member nxe:GeigerPropertyMember
786 Included in exploration and evaluation assets [member] Member nxe:IncludedInExplorationAndEvaluationAssetsMember
787 Laroque East uranium exploration property [member] Member nxe:LaroqueEastUraniumExplorationPropertyMember
788 Schedule of cash flow supplemental [line items] LineItems nxe:ScheduleOfCashFlowSupplementalLineItems
789 Exploration and evaluation asset expenditures Concept (Monetary) For Period Debit nxe:ExplorationAndEvaluationAssetExpendituresIncludedInAccountsPayableAndAccruedLiabilities
790 Equipment expenditures Concept (Monetary) For Period Debit nxe:EquipmentExpendituresIncludedInAccountsPayableAndAccruedLiabilities
791 Interest expense related to convertible debentures Concept (Monetary) For Period Debit nxe:InterestExpenseRelatedToConvertibleDebentures
792 Issue of shares on convertible debenture interest payment (shares) Concept (Shares) For Period nxe:IncreaseDecreaseInNumberOfSharesOutstandingIssueOfSharesOnConvertibleDebentureInterestPayment
793 Issue of shares on convertible debenture interest payment Concept (Monetary) For Period Credit nxe:IncreaseDecreaseThroughIssueOfSharesOnConvertibleDebentureInterestPayment
794 Share-based payments Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
795 Exercise of options Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughExerciseOfOptions
796 Issue of shares for exploration and evaluation assets (shares) Concept (Shares) For Period nxe:IncreaseDecreaseInNumberOfSharesOutstandingIssueOfSharesForExplorationAndEvaluationAssets
797 Issue of shares for exploration and evaluation assets Concept (Monetary) For Period Credit nxe:IncreaseDecreaseThroughIssueOfSharesForExplorationAndEvaluationAssets
798 Increase in ownership interest due to issuances of shares Concept (Percent) For Period nxe:IncreaseInOwnershipInterestDueToIssuancesOfShares
799 168 - Disclosure - Loss (Profit) Per Share - Summary of Loss (Profit) Per Share (Detail) Network

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 http://imetrix.edgar-online.com/taxonomy/role/DisclosureLossProfitPerShareSummaryOfLossProfitPerShare
800 Implied Table Table

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 implied:Table
801 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
802 Basic loss (profit) per share Abstract ifrs-full:BasicEarningsPerShareAbstract
803 Loss (profit) attributable to common shareholders Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
804 Weighted average number of common shares Concept (Shares) For Period ifrs-full:WeightedAverageShares
805 Basic loss (profit) per share Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
806 Diluted loss (profit) per share Abstract ifrs-full:DilutedEarningsPerShareAbstract
807 Loss (profit) attributable to common shareholders Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
808 Interest expense on convertible debentures Concept (Monetary) For Period Debit ifrs-full:InterestExpense
809 Mark to market gain on convertible debentures Concept (Monetary) For Period Credit nxe:MarkToMarketGainLossOnConvertibleDebentures
810 Diluted Loss (profit) available to common shareholders (diluted) Concept (Monetary) For Period Credit nxe:ProfitLossAttributableToOwnersOfParentDiluted
811 Weighted average number of common shares Concept (Shares) For Period ifrs-full:WeightedAverageShares
812 Effect of conversion of convertible debentures Concept (Shares) For Period ifrs-full:DilutiveEffectOfConvertibleInstrumentsOnNumberOfOrdinaryShares
813 Effect of share options on issue Concept (Shares) For Period ifrs-full:DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares
814 Weighted average number of common shares (diluted) at December 31 Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
815 Diluted loss (profit) per common shares Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
816 169 - Disclosure - Loss (Profit) Per Share - Additional Information (Detail) Network

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 http://imetrix.edgar-online.com/taxonomy/role/DisclosureLossProfitPerShareAdditionalInformation
817 Implied Table Table

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 implied:Table
818 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
819 Options exclued from diluted weighted-average number of common shares become anti-dilutive Concept (Shares) For Period nxe:DilutiveSharesWithAntiDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShare

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