v3.26.1
Loans, Impaired Loans and Allowance for Credit Losses - Schedule of Loans at Amortized Cost (Detail) - CAD ($)
$ in Millions
Jul. 31, 2026
Apr. 30, 2026
Oct. 31, 2025
Gross carrying amount [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets $ 777,884 $ 764,584 $ 778,508
Gross carrying amount [member] | Residential mortgages [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 366,643 368,495 370,191
Gross carrying amount [member] | Loans to consumers [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 108,016 108,355 110,567
Gross carrying amount [member] | Credit Card [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 16,365 16,040 18,045
Gross carrying amount [member] | Business and government [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 286,860 271,694 279,705
Net Carrying Amount [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 770,555 757,434 771,045
Net Carrying Amount [member] | Residential mortgages [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 365,148 367,045 368,731
Net Carrying Amount [member] | Loans to consumers [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 105,744 106,101 108,135
Net Carrying Amount [member] | Credit Card [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 15,208 14,874 16,690
Net Carrying Amount [member] | Business and government [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 284,455 269,414 277,489
Financial assets individually assessed for credit losses [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 7,329 7,150 7,463
Financial assets individually assessed for credit losses [member] | Residential mortgages [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 1,495 1,450 1,460
Financial assets individually assessed for credit losses [member] | Loans to consumers [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 2,272 2,254 2,432
Financial assets individually assessed for credit losses [member] | Credit Card [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 1,157 1,166 1,355
Financial assets individually assessed for credit losses [member] | Business and government [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets $ 2,405 $ 2,280 $ 2,216