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Financial Instruments And Risk Management - Summary of Detailed Information About Significant Undiscounted Commitments (Detail)
$ in Thousands
Dec. 31, 2024
CAD ($)
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows $ 478,661
Less than 1 year [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 478,542
1 to 3 years [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 119
4 to 5 years [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 0
Over 5 years [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 0
Trade And Other Payables [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 21,402
Trade And Other Payables [member] | Less than 1 year [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 21,402
Trade And Other Payables [member] | 1 to 3 years [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 0
Trade And Other Payables [member] | 4 to 5 years [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 0
Trade And Other Payables [member] | Over 5 years [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 0
Convertible debentures [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 455,783
Convertible debentures [member] | Less than 1 year [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 455,783
Convertible debentures [member] | 1 to 3 years [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 0
Convertible debentures [member] | 4 to 5 years [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 0
Convertible debentures [member] | Over 5 years [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 0
Lease Liabilities [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 1,476
Lease Liabilities [member] | Less than 1 year [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 1,357
Lease Liabilities [member] | 1 to 3 years [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 119
Lease Liabilities [member] | 4 to 5 years [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows 0
Lease Liabilities [member] | Over 5 years [member]  
Disclosure of maturity analysis for derivative financial liabilities [line items]  
Derivative financial liabilities, undiscounted cash flows $ 0