XML 80 R50.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Convertible Debentures - Summary of Detailed Information about Convertible Debentures (Detail) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Convertible debentures [line items] |  |
Beginning | $ 158,478 | $ 80,021
Fair value on issuance | 330,916 | 143,702
Fair value adjustment | (33,611) | 50,177
Settlement with shares |  | (72,773)
Disposals due to deconsolidation of IsoEnergy |  | (42,649)
Ending | 455,783 | 158,478
2023 Debentures [member] |  |
Convertible debentures [line items] |  |
Beginning | 158,478 |
Fair value on issuance |  | 143,702
Fair value adjustment | (408) | 14,776
Ending | 158,070 | 158,478
2020 Debentures [member] |  |
Convertible debentures [line items] |  |
Beginning |  | 52,615
Fair value adjustment |  | 20,158
Settlement with shares |  | (72,773)
2020 IsoEnergy Debentures [member] |  |
Convertible debentures [line items] |  |
Beginning |  | 22,269
Fair value adjustment |  | 13,938
Disposals due to deconsolidation of IsoEnergy |  | (36,207)
2022 IsoEnergy Debentures [member] |  |
Convertible debentures [line items] |  |
Beginning |  | 5,137
Fair value adjustment |  | 1,305
Disposals due to deconsolidation of IsoEnergy |  | $ (6,442)
2024 Debentures [member] |  |
Convertible debentures [line items] |  |
Fair value on issuance | 330,916 |
Fair value adjustment | (33,203) |
Ending | $ 297,713 |

X
- Definition Convertible debentures. + References No definition available. + Details
Name: | nxe_ConvertibleDebentures
Namespace Prefix: | nxe_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Convertible debentures. + References No definition available. + Details
Name: | nxe_ConvertibleDebenturesLineItems
Namespace Prefix: | nxe_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disposal of convertible debentures due to deconsolidation. + References No definition available. + Details
Name: | nxe_DisposalOfConvertibleDebenturesDueToDeconsolidation
Namespace Prefix: | nxe_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair value adjustment. + References No definition available. + Details
Name: | nxe_FairValueAdjustmentConvertibleDebentures
Namespace Prefix: | nxe_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair Value At Issuance Convertible Debentures. + References No definition available. + Details
Name: | nxe_FairValueAtIssuanceConvertibleDebentures
Namespace Prefix: | nxe_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Settlement With Shares Convertible Deventures. + References No definition available. + Details
Name: | nxe_SettlementWithSharesConvertibleDeventures
Namespace Prefix: | nxe_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=nxe_TwoZeroTwoThreeDebenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=nxe_TwoZeroTwoZeroDebenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=nxe_TwoZeroTwoZeroIsoEnergyDebenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=nxe_TwoZeroTwoTwoIsoEnergyDebenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=nxe_TwoZeroTwoFourDebenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |