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Derivatives (Schedule of Notional Amount of Non-trading Derivatives) (Details) - Derivatives held or issued for non trading purposes [member] - CAD ($)
$ in Millions
Oct. 31, 2025
Oct. 31, 2024
Disclosure of financial assets [line items]    
Notional amount $ 2,157,038 $ 1,925,290
Derivatives in qualifying hedging relationships [member] | Fair value hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 436,988 395,687
Derivatives in qualifying hedging relationships [member] | Cash flow hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 554,929 502,843
Derivatives in qualifying hedging relationships [member] | Net investment hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 23,220 0
Derivatives not in qualifying hedging relationship [member]    
Disclosure of financial assets [line items]    
Notional amount 1,141,901 1,026,760
Interest rate contracts [member]    
Disclosure of financial assets [line items]    
Notional amount 1,911,099 1,711,069
Interest rate contracts [member] | Derivatives in qualifying hedging relationships [member] | Fair value hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 436,988 395,687
Interest rate contracts [member] | Derivatives in qualifying hedging relationships [member] | Cash flow hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 380,109 340,741
Interest rate contracts [member] | Derivatives in qualifying hedging relationships [member] | Net investment hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 0 0
Interest rate contracts [member] | Derivatives not in qualifying hedging relationship [member]    
Disclosure of financial assets [line items]    
Notional amount 1,094,002 974,641
Foreign exchange contracts [member]    
Disclosure of financial assets [line items]    
Notional amount 210,754 175,464
Foreign exchange contracts [member] | Derivatives in qualifying hedging relationships [member] | Fair value hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 0 0
Foreign exchange contracts [member] | Derivatives in qualifying hedging relationships [member] | Cash flow hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 172,269 159,693
Foreign exchange contracts [member] | Derivatives in qualifying hedging relationships [member] | Net investment hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 23,220 0
Foreign exchange contracts [member] | Derivatives not in qualifying hedging relationship [member]    
Disclosure of financial assets [line items]    
Notional amount 15,265 15,771
Credit contracts [member]    
Disclosure of financial assets [line items]    
Notional amount 2,890 2,708
Credit contracts [member] | Derivatives in qualifying hedging relationships [member] | Fair value hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 0 0
Credit contracts [member] | Derivatives in qualifying hedging relationships [member] | Cash flow hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 0 0
Credit contracts [member] | Derivatives in qualifying hedging relationships [member] | Net investment hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 0 0
Credit contracts [member] | Derivatives not in qualifying hedging relationship [member]    
Disclosure of financial assets [line items]    
Notional amount 2,890 2,708
Other contracts [member]    
Disclosure of financial assets [line items]    
Notional amount 32,295 36,049
Other contracts [member] | Derivatives in qualifying hedging relationships [member] | Fair value hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 0 0
Other contracts [member] | Derivatives in qualifying hedging relationships [member] | Cash flow hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 2,551 2,409
Other contracts [member] | Derivatives in qualifying hedging relationships [member] | Net investment hedges [member]    
Disclosure of financial assets [line items]    
Notional amount 0 0
Other contracts [member] | Derivatives not in qualifying hedging relationship [member]    
Disclosure of financial assets [line items]    
Notional amount $ 29,744 $ 33,640