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RELATED PARTY TRANSACTIONS - Narrative (Details) - CAD ($)
1 Months Ended 12 Months Ended
Dec. 31, 2023
Oct. 31, 2023
Oct. 30, 2023
May 31, 2023
Nov. 30, 2022
Sep. 30, 2016
Jan. 31, 2014
Dec. 31, 2023
Dec. 31, 2022
RELATED PARTY TRANSACTIONS                  
Percentage of interests to be held to nominate one director               5.00%  
Dilution Agreement to approve program spending             $ 10,000,000 $ 20,000,000  
Funding percentage rate               100.00% 100.00%
Waterbury Lake Uranium LP                  
RELATED PARTY TRANSACTIONS                  
Ownership interest 69.35%             69.35% 67.41%
Voting interest percentage           75.00%   75.00%  
Mineral property assets               $ 1,456,000 $ 363,000
Denison Waterbury Corp                  
RELATED PARTY TRANSACTIONS                  
Ownership interest   69.35% 67.41% 67.41% 66.90%     60.00%  
KWULP                  
RELATED PARTY TRANSACTIONS                  
Ownership interest               40.00%  
KWULP Limited Partner                  
RELATED PARTY TRANSACTIONS                  
Ownership interest               30.63%  
WLUC                  
RELATED PARTY TRANSACTIONS                  
Ownership interest               0.02%  
WLULP Limited Partner                  
RELATED PARTY TRANSACTIONS                  
Ownership interest               69.35%