v3.22.4
Loans - Summary of Undrawn Credit Facilities and Other Off Balance Sheet Exposures (Detail) - CAD ($)
$ in Millions
Jan. 31, 2023
Oct. 31, 2022
Jan. 31, 2022
Disclosure of internal credit grades [line items]      
Credit exposure $ 426,570 $ 421,510  
ECL allowance 212 203 $ 120
Net credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 373,210 367,581  
Retail [member]      
Disclosure of internal credit grades [line items]      
ECL allowance 117 121  
Retail [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 183,819 180,352  
Retail [member] | Net credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 183,702 180,231  
Retail [member] | Exceptionally Low [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 151,293 149,292  
Retail [member] | Very Low [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 15,807 14,512  
Retail [member] | Low [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 13,260 13,256  
Retail [member] | Medium [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 2,047 1,924  
Retail [member] | High [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 883 837  
Retail [member] | Default [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 33 39  
Retail [member] | Not Rated [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 496 492  
Business and government [member]      
Disclosure of internal credit grades [line items]      
ECL allowance 95 82  
Business and government [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 189,603 187,432  
Business and government [member] | Net credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 189,508 187,350  
Business and government [member] | Investment grade [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 127,891 119,190  
Business and government [member] | Non investment grade [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 60,242 66,986  
Business and government [member] | Watch list [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 939 586  
Business and government [member] | Default [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 80 69  
Business and government [member] | Not Rated [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 451 601  
Stage 1 [member] | 12-month expected credit losses [member] | Financial instruments not credit-impaired [member]      
Disclosure of internal credit grades [line items]      
ECL allowance 87 88 71
Stage 1 [member] | 12-month expected credit losses [member] | Financial instruments not credit-impaired [member] | Net credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 365,478 359,769  
Stage 1 [member] | 12-month expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member]      
Disclosure of internal credit grades [line items]      
ECL allowance 41 38  
Stage 1 [member] | 12-month expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 180,118 175,752  
Stage 1 [member] | 12-month expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Net credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 180,077 175,714  
Stage 1 [member] | 12-month expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Exceptionally Low [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 151,285 149,286  
Stage 1 [member] | 12-month expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Very Low [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 15,758 14,461  
Stage 1 [member] | 12-month expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Low [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 11,585 10,844  
Stage 1 [member] | 12-month expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Medium [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 833 522  
Stage 1 [member] | 12-month expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | High [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 169 155  
Stage 1 [member] | 12-month expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Not Rated [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 488 484  
Stage 1 [member] | 12-month expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member]      
Disclosure of internal credit grades [line items]      
ECL allowance 46 50  
Stage 1 [member] | 12-month expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 185,447 184,105  
Stage 1 [member] | 12-month expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member] | Net credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 185,401 184,055  
Stage 1 [member] | 12-month expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member] | Investment grade [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 127,644 119,069  
Stage 1 [member] | 12-month expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member] | Non investment grade [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 57,349 64,446  
Stage 1 [member] | 12-month expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member] | Watch list [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 17 15  
Stage 1 [member] | 12-month expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member] | Not Rated [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 437 575  
Stage 2 [member] | Lifetime expected credit losses [member] | Financial instruments not credit-impaired [member]      
Disclosure of internal credit grades [line items]      
ECL allowance 124 115 48
Stage 2 [member] | Lifetime expected credit losses [member] | Financial instruments not credit-impaired [member] | Net credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 7,620 7,704  
Stage 2 [member] | Lifetime expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member]      
Disclosure of internal credit grades [line items]      
ECL allowance 76 83  
Stage 2 [member] | Lifetime expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 3,668 4,561  
Stage 2 [member] | Lifetime expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Net credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 3,592 4,478  
Stage 2 [member] | Lifetime expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Exceptionally Low [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 8 6  
Stage 2 [member] | Lifetime expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Very Low [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 49 51  
Stage 2 [member] | Lifetime expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Low [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 1,675 2,412  
Stage 2 [member] | Lifetime expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Medium [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 1,214 1,402  
Stage 2 [member] | Lifetime expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | High [Member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 714 682  
Stage 2 [member] | Lifetime expected credit losses [member] | Retail [member] | Financial instruments not credit-impaired [member] | Not Rated [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 8 8  
Stage 2 [member] | Lifetime expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member]      
Disclosure of internal credit grades [line items]      
ECL allowance 48 32  
Stage 2 [member] | Lifetime expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 4,076 3,258  
Stage 2 [member] | Lifetime expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member] | Net credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 4,028 3,226  
Stage 2 [member] | Lifetime expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member] | Investment grade [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 247 121  
Stage 2 [member] | Lifetime expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member] | Non investment grade [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 2,893 2,540  
Stage 2 [member] | Lifetime expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member] | Watch list [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 922 571  
Stage 2 [member] | Lifetime expected credit losses [member] | Business and government [member] | Financial instruments not credit-impaired [member] | Not Rated [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 14 26  
Stage 3 [member] | Financial instruments credit-impaired [member] | Net credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 112 108  
Stage 3 [member] | Retail [member] | Financial instruments credit-impaired [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 33 39  
Stage 3 [member] | Retail [member] | Financial instruments credit-impaired [member] | Net credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 33 39  
Stage 3 [member] | Retail [member] | Financial instruments credit-impaired [member] | Default [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 33 39  
Stage 3 [member] | Business and government [member] | Financial instruments credit-impaired [member]      
Disclosure of internal credit grades [line items]      
ECL allowance 1    
Stage 3 [member] | Business and government [member] | Financial instruments credit-impaired [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 80 69  
Stage 3 [member] | Business and government [member] | Financial instruments credit-impaired [member] | Net credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 79 69  
Stage 3 [member] | Business and government [member] | Financial instruments credit-impaired [member] | Default [member] | Gross credit exposure [member]      
Disclosure of internal credit grades [line items]      
Credit exposure 80 $ 69  
Stage 3 [member] | Lifetime expected credit losses [member] | Financial instruments credit-impaired [member]      
Disclosure of internal credit grades [line items]      
ECL allowance $ 1   $ 1