Derivative financial instruments and hedging activities - Additional Information (Detail) - Interest rate risk [member] - Interest Rate Contracts With IBOR [Member] $ in Billions |
Oct. 31, 2023
CAD ($)
|
|---|---|
| Disclosure Derivative Financial Instruments And Hedging Activities [line items] | |
| Total return swaps | $ 1 |
| Derivative notional amount | $ 115 |