XML 113 R55.htm IDEA: XBRL DOCUMENT
v3.22.0.1

INTEREST IN OTHER ENTITIES (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
INTEREST IN OTHER ENTITIES |
Significant subsidiaries, associates and joint operations |
|  |  |  |  | December |  |  | December |  |  | Fiscal |  |  |  |
|  | Place |  |  | 31,2021 |  |  | 31,2020 |  |  | 2021 |  |  |  |
|  | Of |  |  | Ownership |  |  | Ownership |  |  | Participating |  |  | Accounting |
|  | Business |  |  | Interest (1) |  |  | Interest (1) |  |  | Interest (2) |  |  | Method |
Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Denison Mines Inc. |  | Canada |  |  |  | 100.00 | % |  |  | 100.00 | % |  |  | N/A |  |  | Consolidation |
Denison AB Holdings Corp. |  | Canada |  |  |  | 100.00 | % |  |  | 100.00 | % |  |  | N/A |  |  | Consolidation |
Denison Waterbury Corp |  | Canada |  |  |  | 100.00 | % |  |  | 100.00 | % |  |  | N/A |  |  | Consolidation |
9373721 Canada Inc. |  | Canada |  |  |  | 100.00 | % |  |  | 100.00 | % |  |  | N/A |  |  | Consolidation |
Denison Mines (Bermuda) I Ltd |  | Bermuda |  |  |  | 100.00 | % |  |  | 100.00 | % |  |  | N/A |  |  | Consolidation |
Joint Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Waterbury Lake Uranium Corp(3) |  | Canada |  |  |  | 60.00 | % |  |  | 60.00 | % |  |  | 100 | % |  | Voting Share(4) |
Waterbury Lake Uranium LP(3) |  | Canada |  |  |  | 66.90 | % |  |  | 66.90 | % |  |  | 100 | % |  | Voting Share(4) |
Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
JCU |  | Canada |  |  |  | 50.00 | % |  |  | nil | % |  |  | 50.00 | % |  | Equity(4) |
Key Contractual Arrangements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Wheeler River Joint Venture |  | Canada |  |  |  | 90.00 | % |  |  | 90.00 | % |  | 90.00%(6) |  |  | Denison Share(6) |
Midwest Joint Venture |  | Canada |  |  |  | 25.17 | % |  |  | 25.17 | % |  |  | 25.17 | % |  | Denison Share(6) |
Mann Lake Joint Venture |  | Canada |  |  |  | 30.00 | % |  |  | 30.00 | % |  | N/A (7) |  |  | Denison Share(6) |
Wolly Joint Venture |  | Canada |  |  |  | 21.32 | % |  |  | 21.89 | % |  | nil% |  |  | Denison Share(6) |
McClean Lake Joint Venture |  | Canada |  |  |  | 22.50 | % |  |  | 22.50 | % |  |  | 22.50 | % |  | Denison Share(6) |

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

X
- References No definition available. + Details
Name: | dnn_SummaryOfSignificantSubsidiariesAssociatesJointOperationsAndContractualArrangementsTableTextBlock
Namespace Prefix: | dnn_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration