XML 161 R108.htm IDEA: XBRL DOCUMENT
v3.25.1

Capital Management and Financial Risk - Equity Price Risk (Details) - CAD ($) | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Capital Management And Financial Risk [Line Item] |  |  |
Percentage of increase in equity price risk exposure used for sensitivity analysis | 10.00% |  |
Percentage of decrease in equity price risk exposure used for sensitivity analysis | 10.00% |  |
Investments | $ 252,135,000 | $ 302,897,000 | $ 170,645,000
Equity Instruments |  |  |
Capital Management And Financial Risk [Line Item] |  |  |
Increase in investments due to increase in equity price | 689,000 |  |
Decrease in investments due to decrease in equity price | $ 684,000 |  |
Convertible Debentures |  |  |
Capital Management And Financial Risk [Line Item] |  |  |
Equity price of F3 | $ 0.26 |  |
Increased equity price risk exposure used for sensitivity analysis | 0.28 |  |
Decreased equity price risk exposure used for sensitivity analysis | $ 0.23 |  |
Investments | $ 13,000,000 | $ 15,565,000 |
Investment impact of increased equity price used for sensitivity analysis | 13,300,000 |  |
Investment impact of decreased equity price used for sensitivity analysis | $ 12,600,000 |  |

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

X
- Definition The decrease in investments as a result of a decrease in a equity price risk exposure. + References No definition available. + Details
Name: | dnn_DecreaseInInvestmentsDueToReasonablyPossibleDecreaseInEquityPriceRisk
Namespace Prefix: | dnn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The equity price of significant measurement input used in the measurement of the fair value of investments. + References No definition available. + Details
Name: | dnn_EquityPriceMeasurableInputForFairValueOfInvestments
Namespace Prefix: | dnn_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The increase in investments as a result of a increase in a equity price risk exposure. + References No definition available. + Details
Name: | dnn_IncreaseInInvestmentsDueToReasonablyPossibleIncreaseInEquityPriceRisk
Namespace Prefix: | dnn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of total investments. + References No definition available. + Details
Name: | dnn_InvestmentsTotal
Namespace Prefix: | dnn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of total investments, due to reasonably possible decreased Equity price. + References No definition available. + Details
Name: | dnn_InvestmentsTotalDueToReasonablyPossibleDecreasedEquityPrice
Namespace Prefix: | dnn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of total investments, due to reasonably possible increased Equity price. + References No definition available. + Details
Name: | dnn_InvestmentsTotalDueToReasonablyPossibleIncreasedEquityPrice
Namespace Prefix: | dnn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The reasonably possible decrease in percentage of equity price used to determine the impact on fair value of investments. + References No definition available. + Details
Name: | dnn_SensitivityAnalysisPercentageOfReasonablyPossibleDecreaseInEquityPrice
Namespace Prefix: | dnn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The reasonably possible increase in percentage of equity price used to determine the impact on fair value of investments. + References No definition available. + Details
Name: | dnn_SensitivityAnalysisPercentageOfReasonablyPossibleIncreaseInEquityPrice
Namespace Prefix: | dnn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The reasonably possible decreased equity price used to determine the impact on fair value of investments. + References No definition available. + Details
Name: | dnn_SensitivityAnalysisReasonablyPossibleDecreasedValueOfEquityPrice
Namespace Prefix: | dnn_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The reasonably possible increased equity price used to determine the impact on fair value of investments. + References No definition available. + Details
Name: | dnn_SensitivityAnalysisReasonablyPossibleIncreasedValueOfEquityPrice
Namespace Prefix: | dnn_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

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

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