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POST-EMPLOYMENT BENEFITS (Details 1) - Post-employment benefits - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
DisclosureOfPostEmploymentBenefitLiabilityLineItems [Line Items] |  |
Post-employment benefits, beginning | $ 2,295 | $ 2,365
Accretion | 70 | 72
Benefits paid | (107) | (142)
Post-employment benefits, ending | $ 2,258 | $ 2,295

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Balance Type: | credit
Period Type: | duration

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Namespace Prefix: | DNN_
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Balance Type: | credit
Period Type: | instant

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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 2019-01-01 -Paragraph 35 -Subparagraph b -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=26&code=ifrs-tx-2019-en-r&anchor=para_35_b_v&doctype=Standard -URIDate 2019-03-27 + Details
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- Details
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