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IFRS 7 - Disclosure - Market Risk - Summary of Amortized Cost and Fair Values of Non-trading Equities (Detail) - CAD ($)
$ in Millions
Oct. 31, 2024
Oct. 31, 2023
Disclosure Of Amortized Cost And Fair Values Of Nontrading Equities [line items]    
Equity-accounted investments in associates $ 145 $ 137
Amortized cost [member] | Non-trading Securities [member]    
Disclosure Of Amortized Cost And Fair Values Of Nontrading Equities [line items]    
Equity securities designated at FVOCI 653 556
Equity-accounted investments in associates 145 137
Total 798 693
Financial assets at fair value [member] | Non-trading Securities [member]    
Disclosure Of Amortized Cost And Fair Values Of Nontrading Equities [line items]    
Equity securities designated at FVOCI 672 572
Equity-accounted investments in associates 253 240
Total $ 925 $ 812