XML 154 R96.htm IDEA: XBRL DOCUMENT
v3.22.0.1

INCOME TAXES (Details 5) - Canada - CAD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Statement [Line Items] |  |
Tax losses - gross | $ 251,967 | $ 220,039
Tax benefit at tax rate of 26% - 27% | 68,263 | 59,578
Set-off against deferred tax liabilities | (16,910) | (16,943)
Total tax loss assets not recognized | 51,353 | 42,635
Tax credits | 1,126 | 1,126
Total tax credit assets not recognized | $ 1,126 | $ 1,126

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

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

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

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

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

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

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

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=dnn_CanadaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |