XML 117 R64.htm IDEA: XBRL DOCUMENT
v3.25.1

Property, Plant And Equipment - Narrative (Details) - CAD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Property Plant And Equipments [Line Items] |  |  |
Percentage of mineral property assets |  | 90.80% |
Carrying value of exploration properties acquired |  | $ (238,000) |
Proceeds on disposal of property, plant and equipment |  | 240,000 | $ 125,000
Mineral properties |  |  |
Property Plant And Equipments [Line Items] |  |  |
Carrying value of exploration properties acquired |  | $ (238,000) |
Kindersley Lithium Project |  |  |
Property Plant And Equipments [Line Items] |  |  |
Percentage of ownership interest earned through earn - in options |  | 75.00% |
Payments for acquisition of interest in project |  | $ 800,000 |
Transaction expenses related to agreement |  | 61,000 |
Expenses related to the earn - in option |  | $ 2,396,000 |
Foremost Clean Energy Ltd | Non-core uranium exploration properties |  |  |
Property Plant And Equipments [Line Items] |  |  |
Percentage of interest in exploration properties | 20.00% | 20.00% |
Foremost Clean Energy Ltd | Hatchet Lake |  |  |
Property Plant And Equipments [Line Items] |  |  |
Percentage of interest in exploration properties |  | 14.03% |
Foremost Clean Energy Ltd | Mineral properties |  |  |
Property Plant And Equipments [Line Items] |  |  |
Carrying value of exploration properties acquired |  | $ (238,000) |
Wheeler River Joint Venture |  |  |
Property Plant And Equipments [Line Items] |  |  |
Ownership Interest, in Key Contractual Arrangements |  | 90.00% |
Waterbury Lake Uranium LP |  |  |
Property Plant And Equipments [Line Items] |  |  |
Ownership interest, Joint Operations |  | 70.32% | 69.35%
Net smelter return royalty |  | 2.00% |
Midwest Joint Venture |  |  |
Property Plant And Equipments [Line Items] |  |  |
Ownership Interest, in Key Contractual Arrangements |  | 25.17% | 25.17%
Mann Lake Joint Venture |  |  |
Property Plant And Equipments [Line Items] |  |  |
Ownership Interest, in Key Contractual Arrangements |  | 30.00% | 30.00%
Wolly Joint Venture |  |  |
Property Plant And Equipments [Line Items] |  |  |
Ownership Interest, in Key Contractual Arrangements |  | 20.77% | 20.77%
Johnston Lake Joint Venture |  |  |
Property Plant And Equipments [Line Items] |  |  |
Ownership interest, contractual arrangements |  | 100.00% |
McClean Lake Joint Venture |  |  |
Property Plant And Equipments [Line Items] |  |  |
Ownership Interest, in Key Contractual Arrangements |  | 22.50% | 22.50%
Building and Machinery |  | $ 51,545,000 |
Percentage of building and machinery |  | 69.90% |
JCU |  |  |
Property Plant And Equipments [Line Items] |  |  |
Ownership interest, Joint Operations |  | 50.00% | 50.00%
JCU | Wheeler River Joint Venture |  |  |
Property Plant And Equipments [Line Items] |  |  |
Ownership interest, Joint Operations |  | 5.00% |
Saskatchewan |  |  |
Property Plant And Equipments [Line Items] |  |  |
Carrying value of mineral property assets |  | $ 167,297,000 |
Percentage of mineral property assets |  | 90.80% |

X
- References No definition available. + Details
Name: | dnn_BuildingAndMachinery
Namespace Prefix: | dnn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of carrying value of significant mineral property assets. + References No definition available. + Details
Name: | dnn_CarryingValueOfMineralPropertyAssets
Namespace Prefix: | dnn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The decrease in property, plant and equipment resulting from disposals for acquisition of equity interest. + References No definition available. + Details
Name: | dnn_DisposalsForAcquisitionOfEquityInterestPropertyPlantAndEquipment
Namespace Prefix: | dnn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the percentage of net smelter return royalty on the portion of the project that is not owned. + References No definition available. + Details
Name: | dnn_NetSmelterReturnRoyaltyPercentage
Namespace Prefix: | dnn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition It represents the percentage of proportion of ownership interest of contractual arrangement. + References No definition available. + Details
Name: | dnn_OwnershipInterestInContractualArrangements
Namespace Prefix: | dnn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of cash outwards for acquisition of interest in project. + References No definition available. + Details
Name: | dnn_PaymentsForAcquisitionOfInterestInProject
Namespace Prefix: | dnn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The percentage of interest in exploration properties transferred. + References No definition available. + Details
Name: | dnn_PercentageOfInterestInExplorationPropertiesTransferred
Namespace Prefix: | dnn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage of mineral property assets. + References No definition available. + Details
Name: | dnn_PercentageOfMineralPropertyAssets
Namespace Prefix: | dnn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage of ownership interest to be earned through earn in options. + References No definition available. + Details
Name: | dnn_PercentageOfOwnershipInterestToBeEarnedThroughEarnInOptions
Namespace Prefix: | dnn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | dnn_PercentageofBuildingandMachinery
Namespace Prefix: | dnn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of expense arising from project development. + References No definition available. + Details
Name: | dnn_ProjectDevelopmentExpense
Namespace Prefix: | dnn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | dnn_PropertyPlantAndEquipmentsLineItems
Namespace Prefix: | dnn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition It represents the percentage of proportion of ownership interest key operations contractual arrangement. + References No definition available. + Details
Name: | dnn_ProportionOfOwnershipInterestKeyContractualArrangements
Namespace Prefix: | dnn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Transaction expenses related to earn in option agreement. + References No definition available. + Details
Name: | dnn_TransactionExpensesRelatedToEarnInOptionAgreement
Namespace Prefix: | dnn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from sales of property, plant and equipment, classified as investing activities. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 16 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_16_b&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The proportion of ownership interest in a joint operation attributable to the entity. [Refer: Total for all joint operations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph 21 -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_iv&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestInJointOperation
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=dnn_MineralPropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=dnn_KindersleyLithiumProjectMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=dnn_ForemostCleanEnergyLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=dnn_NonCoreUraniumExplorationPropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=dnn_HatchetLakePropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=dnn_WheelerRiverJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=dnn_WaterburyLakeUraniumLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=dnn_MidwestJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=dnn_MannLakeJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=dnn_WollyJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=dnn_JohnstonLakeJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=dnn_McCleanLakeJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointVenturesAxis=dnn_JCUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_CA-SK
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |