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Oil and Gas Properties - Sensitivity of the Estimated Recoverable Amount of Possible Changes (Details) - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about property, plant and equipment [line items]    
Impairment loss   $ (833,700)
Viking CGU    
Disclosure of detailed information about property, plant and equipment [line items]    
Recoverable amount $ 606,290  
Impairment loss (184,000)  
Change in discount rate of 1% 26,500  
Change in oil price of $2.50/bbl 53,000  
Change in gas price of $0.25/mcf 3,500  
Eagle Ford Non-operated CGU    
Disclosure of detailed information about property, plant and equipment [line items]    
Recoverable amount 1,429,658  
Impairment loss (649,662)  
Change in discount rate of 1% 71,300  
Change in oil price of $2.50/bbl 107,600  
Change in gas price of $0.25/mcf $ 25,700