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Cash and Cash Equivalents - Schedule Representing Cash and Cash Equivalents (Detail) - CAD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Cash and cash equivalents [abstract]      
Cash $ 2,723 $ 2,109  
Short-Term Investments 370 118  
Total Cash and Cash Equivalents $ 3,093 $ 2,227 $ 4,524