v3.26.1
Loans, Impaired Loans and Allowance for Credit Losses - Schedule of Loans at Amortized Cost (Detail) - CAD ($)
$ in Millions
Apr. 30, 2026
Jan. 31, 2026
Oct. 31, 2025
Gross carrying amount [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets $ 764,584 $ 762,477 $ 778,508
Gross carrying amount [member] | Residential mortgages [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 368,495 368,619 370,191
Gross carrying amount [member] | Loans to consumers [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 108,355 107,579 110,567
Gross carrying amount [member] | Credit Card [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 16,040 16,112 18,045
Gross carrying amount [member] | Business and government [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 271,694 270,167 279,705
Net Carrying Amount [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 757,434 755,475 771,045
Net Carrying Amount [member] | Residential mortgages [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 367,045 367,180 368,731
Net Carrying Amount [member] | Loans to consumers [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 106,101 105,363 108,135
Net Carrying Amount [member] | Credit Card [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 14,874 14,897 16,690
Net Carrying Amount [member] | Business and government [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 269,414 268,035 277,489
Financial assets individually assessed for credit losses [member]      
Disclosure of fair value financial assets amortised cost [line Items]      
Financial assets 7,150 7,002 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 1,450 1,439 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 2,254 2,216 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 1,166 1,215 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 $ 2,280 $ 2,132 $ 2,216