XML 140 R82.htm IDEA: XBRL DOCUMENT
v3.22.0.1

RECLAMATION OBLIGATIONS (Details) $ in Thousands, $ in Thousands | Dec. 31, 2021 CAD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CAD ($) | Dec. 31, 2020 USD ($)
--- | --- | --- | --- | ---
Statement [Line Items] |  |  |  |
Current reclamation obligations | $ 1,181 |  | $ 802 |
Reclamation obligations | 36,351 |  | 37,618 |
Total reclamation obligations | 37,532 | $ 37,532 | 38,420 | $ 38,420
Other |  |  |  |
Statement [Line Items] |  |  |  |
Total reclamation obligations | 1,250 |  | 22 |
Elliot Lake |  |  |  |
Statement [Line Items] |  |  |  |
Total reclamation obligations | 20,877 |  | 21,523 |
McClean And Midwest Joint Ventures |  |  |  |
Statement [Line Items] |  |  |  |
Total reclamation obligations | $ 15,405 |  | $ 16,875 |

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

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

X
- References No definition available. + Details
Name: | dnn_ProvisionForReclamationObligations
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
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=dnn_OtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=dnn_ElliotLakeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=dnn_McCleanAndMidwestJointVenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |