XML 107 R54.htm IDEA: XBRL DOCUMENT
v3.25.1

Investments - Investments in associates (Details) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 CAD ($) shares | Sep. 30, 2024 CAD ($) property item shares | Dec. 31, 2024 CAD ($) shares
Foremost Clean Energy Ltd | Non-core uranium exploration properties |  |  |
Disclosure of associates [line items] |  |  |
Option percentage of interest to be transferred |  | 70.00% |
Number of non core uranium exploration properties | property |  | 10 |
Aggregate Consideration | $ |  | $ 30,000,000 |
Percentage of interest in exploration properties |  | 20.00% | 20.00%
Timeline for second phase |  | 36 months |
Timeline for third phase |  | 36 months |
Foremost Clean Energy Ltd | Hatchet Lake |  |  |
Disclosure of associates [line items] |  |  |
Percentage of interest in exploration properties |  | 14.03% |
Foremost Clean Energy Ltd |  |  |
Disclosure of associates [line items] |  |  |
Shares issued |  | 1,369,810 |
Percentage of outstanding shares issued |  | 19.95% |
Maximum number of directors to the board of directors | item |  | 2 |
Percentage of equity interest maintained with equity participation right |  | 19.95% |
Shares acquired | 607,600 |  |
Warrants acquired | 607,600 |  |
Total Consideration | $ | $ 1,822,000 |  |
Ownership Interest |  |  | 19.13%
Shares held | 1,977,410 |  | 1,977,410
Fair market value of shares | $ | $ 4,054,000 |  | $ 4,054,000

X
- Definition Number of non core uranium exploration properties in option agreement. + References No definition available. + Details
Name: | dnn_NumberOfNonCoreUraniumExplorationPropertiesInOptionAgreement
Namespace Prefix: | dnn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Shares held in associate + References No definition available. + Details
Name: | dnn_NumberOfSharesHeldInAssociate
Namespace Prefix: | dnn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Equity participation right to maintain certain percentage of equity interest. + References No definition available. + Details
Name: | dnn_PercentageOfEquityInterestEquityParticipationRight
Namespace Prefix: | dnn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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 Right to appoint maximum members in associate board. + References No definition available. + Details
Name: | dnn_RightToAppointMaximumMembersInAssociateBoard
Namespace Prefix: | dnn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares acquired in associate. + References No definition available. + Details
Name: | dnn_SharesAcquiredInAssociate
Namespace Prefix: | dnn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares received on sale of interest in property. + References No definition available. + Details
Name: | dnn_SharesReceivedOnSaleOfInterestInProperty
Namespace Prefix: | dnn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Shares received percentage to the outstanding shares. + References No definition available. + Details
Name: | dnn_SharesReceivedPercentageToOutstandingShares
Namespace Prefix: | dnn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Threshold option percentage of interest to be transferred upon exercise. + References No definition available. + Details
Name: | dnn_ThresholdOptionPercentageOfInterestToBeTransferred
Namespace Prefix: | dnn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period over which second phase of milestone payment to be completed + References No definition available. + Details
Name: | dnn_TimelineToCompleteSecondPhase
Namespace Prefix: | dnn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period over which third phase of milestone payment to be completed from the completion of second phase of milestone payment. + References No definition available. + Details
Name: | dnn_TimelineToCompleteThirdPhase
Namespace Prefix: | dnn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total consideration for transfer of interest in property. + References No definition available. + Details
Name: | dnn_TotalConsiderationForTransferOfInterestInProperty
Namespace Prefix: | dnn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of warrants acquired in associate. + References No definition available. + Details
Name: | dnn_WarrantsAcquiredInAssociate
Namespace Prefix: | dnn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
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: | ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The fair value of investments in associates if there are quoted market prices for the investment. [Refer: Total for all associates [member]; Investments in associates reported in separate financial statements] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph 21 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_b_iii&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_FairValueOfInvestmentsInAssociatesWherePriceQuotationsPublished
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The proportion of ownership interest in an associate attributable to the entity. [Refer: Total for all associates [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2024-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_17_b_iii&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2024-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b_iii&doctype=Standard -URIDate 2024-03-27 Reference 3: 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_ProportionOfOwnershipInterestInAssociate
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow for the purchase of interests in associates. [Refer: Total for all associates [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 16 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_16&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_PurchaseOfInterestsInAssociates
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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_HatchetLakeJointOperationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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