XML 102 R71.htm IDEA: XBRL DOCUMENT
v3.22.4

RESTRICTED CASH AND INVESTMENTS (Details) - CAD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Statement [Line Items] |  |
Restricted cash and investments | $ 11,105 | $ 12,001
Cash and cash equivalents |  |
Statement [Line Items] |  |
Restricted cash and investments | 3,133 | 2,866
Investments |  |
Statement [Line Items] |  |
Restricted cash and investments | 7,972 | 9,135
Elliot Lake reclamation trust fund |  |
Statement [Line Items] |  |
Restricted cash and investments | 3,133 | 2,866
Letters of credit facility pledged assets |  |
Statement [Line Items] |  |
Restricted cash and investments | 7,972 | 9,000
Letters of credit additional collateral |  |
Statement [Line Items] |  |
Restricted cash and investments | $ 0 | $ 135

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: | dnn_StatementLineItems
Namespace Prefix: | dnn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of cash and cash equivalents whose use or withdrawal is restricted. [Refer: Cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_RestrictedCashAndCashEquivalents
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=dnn_RestrictedCashCashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=dnn_RestrictedCashInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=dnn_ElliotLakeReclamationTrustFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=dnn_LettersOfCreditFacilityPledgedAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=dnn_LettersOfCreditAdditionalCollateralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |