v3.22.2.2
Loans and Allowance for Credit Losses - Disclosure of Loans Maturity and Rate Sensitivity (Detail) - CAD ($)
$ in Millions
Oct. 31, 2022
Oct. 31, 2021
Disclosure of credit risk exposure [line items]    
Total loans $ 823,718 $ 721,664
Allowance for loan losses (3,753) (4,089)
Total loans net of allowance for loan losses 819,965 717,575
Maturity term [member]    
Disclosure of credit risk exposure [line items]    
Total loans 823,718 721,664
Allowance for loan losses (3,753) (4,089)
Total loans net of allowance for loan losses 819,965 717,575
Rate sensitivity [member]    
Disclosure of credit risk exposure [line items]    
Total loans 823,718 721,664
Allowance for loan losses (3,753) (4,089)
Total loans net of allowance for loan losses 819,965 717,575
Floating [member] | Rate sensitivity [member]    
Disclosure of credit risk exposure [line items]    
Total loans 246,074 203,053
Fixed Rate [member] | Rate sensitivity [member]    
Disclosure of credit risk exposure [line items]    
Total loans 567,210 508,773
Non-rate-sensitive [Member] | Rate sensitivity [member]    
Disclosure of credit risk exposure [line items]    
Total loans 10,434 9,838
Retail [member] | Maturity term [member]    
Disclosure of credit risk exposure [line items]    
Total loans 549,751 503,598
Retail [member] | Rate sensitivity [member]    
Disclosure of credit risk exposure [line items]    
Total loans 549,751 503,598
Retail [member] | Floating [member] | Rate sensitivity [member]    
Disclosure of credit risk exposure [line items]    
Total loans 199,414 166,910
Retail [member] | Fixed Rate [member] | Rate sensitivity [member]    
Disclosure of credit risk exposure [line items]    
Total loans 342,087 329,185
Retail [member] | Non-rate-sensitive [Member] | Rate sensitivity [member]    
Disclosure of credit risk exposure [line items]    
Total loans 8,250 7,503
Wholesale [member]    
Disclosure of credit risk exposure [line items]    
Allowance for loan losses (1,435) (1,680)
Wholesale [member] | Maturity term [member]    
Disclosure of credit risk exposure [line items]    
Total loans 273,967 218,066
Wholesale [member] | Rate sensitivity [member]    
Disclosure of credit risk exposure [line items]    
Total loans 273,967 218,066
Wholesale [member] | Floating [member] | Rate sensitivity [member]    
Disclosure of credit risk exposure [line items]    
Total loans 46,660 36,143
Wholesale [member] | Fixed Rate [member] | Rate sensitivity [member]    
Disclosure of credit risk exposure [line items]    
Total loans 225,123 179,588
Wholesale [member] | Non-rate-sensitive [Member] | Rate sensitivity [member]    
Disclosure of credit risk exposure [line items]    
Total loans 2,184 2,335
Under 1 year [member] | Maturity term [member]    
Disclosure of credit risk exposure [line items]    
Total loans 504,115 423,708
Under 1 year [member] | Retail [member] | Maturity term [member]    
Disclosure of credit risk exposure [line items]    
Total loans 277,302 249,363
Under 1 year [member] | Wholesale [member] | Maturity term [member]    
Disclosure of credit risk exposure [line items]    
Total loans 226,813 174,345
1 to 5 years [member] | Maturity term [member]    
Disclosure of credit risk exposure [line items]    
Total loans 262,595 256,290
1 to 5 years [member] | Retail [member] | Maturity term [member]    
Disclosure of credit risk exposure [line items]    
Total loans 226,793 222,408
1 to 5 years [member] | Wholesale [member] | Maturity term [member]    
Disclosure of credit risk exposure [line items]    
Total loans 35,802 33,882
Over 5 years [member] | Maturity term [member]    
Disclosure of credit risk exposure [line items]    
Total loans 57,008 41,666
Over 5 years [member] | Retail [member] | Maturity term [member]    
Disclosure of credit risk exposure [line items]    
Total loans 45,656 31,827
Over 5 years [member] | Wholesale [member] | Maturity term [member]    
Disclosure of credit risk exposure [line items]    
Total loans $ 11,352 $ 9,839