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Fair Value of Financial Instruments - Summary of Fair Values of Financial Instruments of Bank Using Valuation Methods and Assumption (Detail) - CAD ($) $ in Millions | Oct. 31, 2025 | Oct. 31, 2024
--- | --- | ---
Assets: |  |  |
Cash and deposits with financial institutions | [1] | $ 65,967 | $ 63,860
Trading assets |  | 152,223 | 129,727
Securities purchased under resale agreements and securities borrowed |  | 203,008 | 200,543
Derivative financial instruments |  | 46,531 | 44,379
Customers' liability under acceptances | [2],[3] | 177 | 148
Liabilities: |  |  |
Deposits | [4] | 966,279 | 943,849
Financial instruments designated at fair value through profit or loss |  | 47,165 | 36,341
Acceptances |  | 178 | 149
Obligations related to securities sold short |  | 38,104 | 35,042
Derivative financial instruments |  | 56,031 | 51,260
Obligations related to securities sold under repurchase agreements and securities lent |  | 189,144 | 190,449
Subordinated debentures |  | 7,692 | 7,833
Gross carrying amount [member] |  |  |
Assets: |  |  |
Cash and deposits with financial institutions |  | 65,967 | 63,860
Trading assets |  | 152,223 | 129,727
Securities purchased under resale agreements and securities borrowed |  | 203,008 | 200,543
Derivative financial instruments |  | 46,531 | 44,379
Investment securities - FVOCI and FVTPL |  | 126,226 | 123,420
Investment securities - Amortized cost |  | 23,722 | 29,412
Loans |  | 771,045 | 760,829
Customers' liability under acceptances |  | 177 | 148
Other financial assets |  | 28,128 | 22,467
Liabilities: |  |  |
Deposits |  | 966,279 | 943,849
Financial instruments designated at fair value through profit or loss |  | 47,165 | 36,341
Acceptances |  | 178 | 149
Obligations related to securities sold short |  | 38,104 | 35,042
Derivative financial instruments |  | 56,031 | 51,260
Obligations related to securities sold under repurchase agreements and securities lent |  | 189,144 | 190,449
Subordinated debentures |  | 7,692 | 7,833
Other financial liabilities |  | 56,529 | 53,387
At fair value [member] |  |  |
Assets: |  |  |
Cash and deposits with financial institutions |  | 65,967 | 63,860
Trading assets |  | 152,223 | 129,727
Securities purchased under resale agreements and securities borrowed |  | 203,008 | 200,543
Derivative financial instruments |  | 46,531 | 44,379
Investment securities - FVOCI and FVTPL |  | 126,226 | 123,420
Investment securities - Amortized cost |  | 23,239 | 28,422
Loans |  | 769,900 | 757,825
Customers' liability under acceptances |  | 177 | 148
Other financial assets |  | 28,128 | 22,467
Liabilities: |  |  |
Deposits |  | 965,925 | 941,290
Financial instruments designated at fair value through profit or loss |  | 47,165 | 36,341
Acceptances |  | 178 | 149
Obligations related to securities sold short |  | 38,104 | 35,042
Derivative financial instruments |  | 56,031 | 51,260
Obligations related to securities sold under repurchase agreements and securities lent |  | 189,144 | 190,449
Subordinated debentures |  | 7,749 | 7,814
Other financial liabilities |  | $ 56,500 | $ 53,342
[1] | Net of allowances of $4 (2024 – $3).
[2] | 98.8% of acceptances reside outside Canada (October 31, 2024 – 96.5%).
[3] | Geographic segmentation is based on the location of the property for residential mortgages; otherwise, the residence of the borrower.
[4] | Deposits denominated in U.S. dollars amount to $297,065 (2024 – $295,316), deposits denominated in Chilean pesos amount to $20,053 (2024 – $19,271), deposits denominated in Mexican pesos amount to $35,941 (2024 – $34,416) and deposits denominated in other foreign currencies amount to $117,530 (2024 – $109,683).

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