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v3.25.1

Other Liabilities - Post-employment Benefits (Details) - CAD ($) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Other Liabilities [Abstract] |  |
Benefits paid | $ (119,000) | $ (105,000)

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- References No definition available. + Details
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Namespace Prefix: | dnn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of benefits paid or payable for retirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2024-01-01 -Paragraph 35 -Subparagraph b -Clause v -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2024-en-r&anchor=para_35_b_v&doctype=Standard -URIDate 2024-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration