v3.24.1.1.u2
Loans, Impaired Loans, and Allowance for Credit Losses (Summary of Macroeconomic Variables impacted in Determining ECLs) (Details)
 6 Months Ended
Apr. 30, 2024
Base Forecast [Member] | Average Q2 2024 - Q1 2025 [Member]  
Disclosure of detailed information about financial instruments [line items]  
U.S. 10-year treasury yield 3.86%
U.S. 10-year BBB spread 1.70%
Exchange rate (U.S. dollar/Canadian dollar) 0.74
Base Forecast [Member] | Average Q2 2024 - Q1 2025 [Member] | Canada [member]  
Disclosure of detailed information about financial instruments [line items]  
Unemployment rate 6.50%
Real GDP 1.10%
Home prices 1.50%
Central bank policy interest rate 4.25%
Base Forecast [Member] | Average Q2 2024 - Q1 2025 [Member] | United States [member]  
Disclosure of detailed information about financial instruments [line items]  
Unemployment rate 4.10%
Real GDP 2.00%
Home prices 3.00%
Central bank policy interest rate 4.94%
Base Forecast [Member] | Remaining 4 year period [member]  
Disclosure of detailed information about financial instruments [line items]  
U.S. 10-year treasury yield 3.21%
U.S. 10-year BBB spread 1.81%
Exchange rate (U.S. dollar/Canadian dollar) 0.80
Base Forecast [Member] | Remaining 4 year period [member] | Canada [member]  
Disclosure of detailed information about financial instruments [line items]  
Unemployment rate 6.10%
Real GDP 1.90%
Home prices 2.90%
Central bank policy interest rate 2.31%
Base Forecast [Member] | Remaining 4 year period [member] | United States [member]  
Disclosure of detailed information about financial instruments [line items]  
Unemployment rate 4.00%
Real GDP 1.90%
Home prices 2.70%
Central bank policy interest rate 2.84%
Upside Scenario [Member] | Average Q2 2024 - Q1 2025 [Member]  
Disclosure of detailed information about financial instruments [line items]  
U.S. 10-year treasury yield 4.20%
U.S. 10-year BBB spread 1.49%
Exchange rate (U.S. dollar/Canadian dollar) 0.77
Upside Scenario [Member] | Average Q2 2024 - Q1 2025 [Member] | Canada [member]  
Disclosure of detailed information about financial instruments [line items]  
Unemployment rate 5.80%
Real GDP 1.50%
Home prices 1.90%
Central bank policy interest rate 4.88%
Upside Scenario [Member] | Average Q2 2024 - Q1 2025 [Member] | United States [member]  
Disclosure of detailed information about financial instruments [line items]  
Unemployment rate 3.80%
Real GDP 2.60%
Home prices 3.50%
Central bank policy interest rate 5.38%
Upside Scenario [Member] | Remaining 4 year period [member]  
Disclosure of detailed information about financial instruments [line items]  
U.S. 10-year treasury yield 3.32%
U.S. 10-year BBB spread 1.74%
Exchange rate (U.S. dollar/Canadian dollar) 0.81
Upside Scenario [Member] | Remaining 4 year period [member] | Canada [member]  
Disclosure of detailed information about financial instruments [line items]  
Unemployment rate 5.80%
Real GDP 1.90%
Home prices 2.90%
Central bank policy interest rate 2.44%
Upside Scenario [Member] | Remaining 4 year period [member] | United States [member]  
Disclosure of detailed information about financial instruments [line items]  
Unemployment rate 3.90%
Real GDP 1.90%
Home prices 2.80%
Central bank policy interest rate 2.94%
Downside Scenario [Member] | Average Q2 2024 - Q1 2025 [Member]  
Disclosure of detailed information about financial instruments [line items]  
U.S. 10-year treasury yield 3.67%
U.S. 10-year BBB spread 2.40%
Exchange rate (U.S. dollar/Canadian dollar) 0.71
Downside Scenario [Member] | Average Q2 2024 - Q1 2025 [Member] | Canada [member]  
Disclosure of detailed information about financial instruments [line items]  
Unemployment rate 7.30%
Real GDP (0.80%)
Home prices (9.60%)
Central bank policy interest rate 3.50%
Downside Scenario [Member] | Average Q2 2024 - Q1 2025 [Member] | United States [member]  
Disclosure of detailed information about financial instruments [line items]  
Unemployment rate 5.10%
Real GDP 0.00%
Home prices (8.20%)
Central bank policy interest rate 4.00%
Downside Scenario [Member] | Remaining 4 year period [member]  
Disclosure of detailed information about financial instruments [line items]  
U.S. 10-year treasury yield 3.17%
U.S. 10-year BBB spread 2.09%
Exchange rate (U.S. dollar/Canadian dollar) 0.74
Downside Scenario [Member] | Remaining 4 year period [member] | Canada [member]  
Disclosure of detailed information about financial instruments [line items]  
Unemployment rate 7.30%
Real GDP 2.20%
Home prices 3.20%
Central bank policy interest rate 1.78%
Downside Scenario [Member] | Remaining 4 year period [member] | United States [member]  
Disclosure of detailed information about financial instruments [line items]  
Unemployment rate 5.30%
Real GDP 2.20%
Home prices 4.00%
Central bank policy interest rate 2.28%