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IFRS 7 - Disclosure - Liquidity Risk - Summary of Contractual Maturity Profile of On-Balance Sheet Assets, Liabilities and Equity at their Carrying Values (Detail) - CAD ($) $ in Millions | Apr. 30, 2025 | Jan. 31, 2025 | Oct. 31, 2024 | Apr. 30, 2024 | Jan. 31, 2024 | Oct. 31, 2023
--- | --- | --- | --- | --- | --- | ---
Assets |  |  |  |  |  |  |  |  |
Cash and non-interest-bearing deposits with banks |  | $ 14,011 | [1] | $ 13,530 | $ 8,565 | $ 10,299 | [1] | $ 8,910 | $ 20,816
Interest-bearing deposits with banks |  | 35,575 |  |  | 39,499 |  |  |  |
Securities |  | 269,841 |  |  | 254,345 |  |  |  |
Cash collateral on securities borrowed |  | 18,945 |  |  | 17,028 |  |  |  |
Securities purchased under resale agreements |  | 91,261 |  |  | 83,721 |  |  |  |
Loans |  |  |  |  |  |  |  |  |
Residential mortgages |  | 283,437 |  |  | 280,672 |  |  |  |
Personal |  | 46,856 |  |  | 46,681 |  |  |  |
Credit card |  | 20,784 |  |  | 20,551 |  |  |  |
Business and government | [2] | 224,753 |  |  | 214,305 |  |  |  |
Allowance for credit losses |  | (4,191) |  | $ (4,104) | (3,917) | (3,898) |  |  |
Derivative instruments |  | 38,490 |  |  | 36,435 |  |  |  |
Other assets |  | 50,381 |  |  |  |  |  |  |
Total assets |  | 1,090,143 |  |  | 1,041,985 |  |  |  |
Liabilities |  |  |  |  |  |  |  |  |
Deposits |  | 784,627 |  |  | 764,857 |  |  |  |
Obligations related to securities sold short |  | 20,093 |  |  | 21,642 |  |  |  |
Cash collateral on securities lent |  | 6,715 |  |  | 7,997 |  |  |  |
Obligations related to securities sold under repurchase agreements |  | 133,279 |  |  | 110,153 |  |  |  |
Derivative instruments |  | 43,945 |  |  | 40,654 |  |  |  |
Other liabilities |  | 30,764 |  |  |  |  |  |  |
Subordinated indebtedness |  | 8,774 |  |  | 7,465 |  |  |  |
Equity |  | 61,946 |  |  | 59,007 | $ 55,656 |  |  |
Total liabilities and equities |  | 1,090,143 |  |  | 1,041,985 |  |  |  |
Less than 1 month [member] |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |
Cash and non-interest-bearing deposits with banks |  | 14,011 |  |  |  |  |  |  |
Interest-bearing deposits with banks |  | 35,575 |  |  |  |  |  |  |
Securities |  | 7,129 |  |  |  |  |  |  |
Cash collateral on securities borrowed |  | 18,945 |  |  |  |  |  |  |
Securities purchased under resale agreements |  | 49,354 |  |  |  |  |  |  |
Loans |  |  |  |  |  |  |  |  |
Residential mortgages |  | 5,290 |  |  |  |  |  |  |
Personal |  | 969 |  |  |  |  |  |  |
Credit card |  | 436 |  |  |  |  |  |  |
Business and government |  | 4,718 |  |  |  |  |  |  |
Derivative instruments |  | 2,717 |  |  |  |  |  |  |
Total assets |  | 139,144 |  |  | 130,008 |  |  |  |
Liabilities |  |  |  |  |  |  |  |  |
Deposits |  | 44,568 |  |  |  |  |  |  |
Obligations related to securities sold short |  | 20,093 |  |  |  |  |  |  |
Cash collateral on securities lent |  | 6,715 |  |  |  |  |  |  |
Obligations related to securities sold under repurchase agreements |  | 122,041 |  |  |  |  |  |  |
Derivative instruments |  | 7,844 |  |  |  |  |  |  |
Other liabilities |  | 34 |  |  |  |  |  |  |
Total liabilities and equities |  | 201,295 |  |  | 188,502 |  |  |  |
Later than one months and not later than three months [member] |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |
Securities |  | 17,567 |  |  |  |  |  |  |
Securities purchased under resale agreements |  | 19,259 |  |  |  |  |  |  |
Loans |  |  |  |  |  |  |  |  |
Residential mortgages |  | 11,046 |  |  |  |  |  |  |
Personal |  | 581 |  |  |  |  |  |  |
Credit card |  | 873 |  |  |  |  |  |  |
Business and government |  | 6,334 |  |  |  |  |  |  |
Derivative instruments |  | 6,622 |  |  |  |  |  |  |
Total assets |  | 62,282 |  |  | 45,680 |  |  |  |
Liabilities |  |  |  |  |  |  |  |  |
Deposits |  | 42,098 |  |  |  |  |  |  |
Obligations related to securities sold under repurchase agreements |  | 8,279 |  |  |  |  |  |  |
Derivative instruments |  | 6,240 |  |  |  |  |  |  |
Other liabilities |  | 47 |  |  |  |  |  |  |
Total liabilities and equities |  | 56,664 |  |  | 48,833 |  |  |  |
3 - 6 months [member] |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |
Securities |  | 9,998 |  |  |  |  |  |  |
Securities purchased under resale agreements |  | 14,810 |  |  |  |  |  |  |
Loans |  |  |  |  |  |  |  |  |
Residential mortgages |  | 21,240 |  |  |  |  |  |  |
Personal |  | 1,011 |  |  |  |  |  |  |
Credit card |  | 1,309 |  |  |  |  |  |  |
Business and government |  | 13,523 |  |  |  |  |  |  |
Derivative instruments |  | 3,068 |  |  |  |  |  |  |
Total assets |  | 64,959 |  |  | 57,993 |  |  |  |
Liabilities |  |  |  |  |  |  |  |  |
Deposits |  | 60,055 |  |  |  |  |  |  |
Obligations related to securities sold under repurchase agreements |  | 660 |  |  |  |  |  |  |
Derivative instruments |  | 2,489 |  |  |  |  |  |  |
Other liabilities |  | 68 |  |  |  |  |  |  |
Total liabilities and equities |  | 63,272 |  |  | 75,616 |  |  |  |
6 - 9 months [Member] |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |
Securities |  | 11,089 |  |  |  |  |  |  |
Securities purchased under resale agreements |  | 4,136 |  |  |  |  |  |  |
Loans |  |  |  |  |  |  |  |  |
Residential mortgages |  | 15,842 |  |  |  |  |  |  |
Personal |  | 635 |  |  |  |  |  |  |
Credit card |  | 1,309 |  |  |  |  |  |  |
Business and government |  | 15,393 |  |  |  |  |  |  |
Derivative instruments |  | 4,022 |  |  |  |  |  |  |
Total assets |  | 52,426 |  |  | 52,094 |  |  |  |
Liabilities |  |  |  |  |  |  |  |  |
Deposits |  | 48,992 |  |  |  |  |  |  |
Obligations related to securities sold under repurchase agreements |  | 678 |  |  |  |  |  |  |
Derivative instruments |  | 3,867 |  |  |  |  |  |  |
Other liabilities |  | 69 |  |  |  |  |  |  |
Total liabilities and equities |  | 53,606 |  |  | 49,168 |  |  |  |
9 - 12 months [Member] |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |
Securities |  | 9,531 |  |  |  |  |  |  |
Securities purchased under resale agreements |  | 2,474 |  |  |  |  |  |  |
Loans |  |  |  |  |  |  |  |  |
Residential mortgages |  | 27,887 |  |  |  |  |  |  |
Personal |  | 971 |  |  |  |  |  |  |
Credit card |  | 1,309 |  |  |  |  |  |  |
Business and government |  | 14,378 |  |  |  |  |  |  |
Derivative instruments |  | 2,458 |  |  |  |  |  |  |
Total assets |  | 59,008 |  |  | 61,184 |  |  |  |
Liabilities |  |  |  |  |  |  |  |  |
Deposits |  | 52,330 |  |  |  |  |  |  |
Derivative instruments |  | 2,356 |  |  |  |  |  |  |
Other liabilities |  | 69 |  |  |  |  |  |  |
Total liabilities and equities |  | 54,755 |  |  | 46,158 |  |  |  |
1 - 2 years [member] |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |
Securities |  | 29,605 |  |  |  |  |  |  |
Securities purchased under resale agreements |  | 1,221 |  |  |  |  |  |  |
Loans |  |  |  |  |  |  |  |  |
Residential mortgages |  | 90,285 |  |  |  |  |  |  |
Personal |  | 665 |  |  |  |  |  |  |
Credit card |  | 5,238 |  |  |  |  |  |  |
Business and government |  | 57,116 |  |  |  |  |  |  |
Derivative instruments |  | 5,815 |  |  |  |  |  |  |
Total assets |  | 189,945 |  |  | 186,218 |  |  |  |
Liabilities |  |  |  |  |  |  |  |  |
Deposits |  | 51,068 |  |  |  |  |  |  |
Obligations related to securities sold under repurchase agreements |  | 620 |  |  |  |  |  |  |
Derivative instruments |  | 6,581 |  |  |  |  |  |  |
Other liabilities |  | 264 |  |  |  |  |  |  |
Total liabilities and equities |  | 58,533 |  |  | 55,388 |  |  |  |
2 - 5 years [member] |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |
Securities |  | 63,991 |  |  |  |  |  |  |
Securities purchased under resale agreements |  | 7 |  |  |  |  |  |  |
Loans |  |  |  |  |  |  |  |  |
Residential mortgages |  | 101,839 |  |  |  |  |  |  |
Personal |  | 4,745 |  |  |  |  |  |  |
Credit card |  | 10,310 |  |  |  |  |  |  |
Business and government |  | 78,410 |  |  |  |  |  |  |
Derivative instruments |  | 7,721 |  |  |  |  |  |  |
Total assets |  | 267,023 |  |  | 260,975 |  |  |  |
Liabilities |  |  |  |  |  |  |  |  |
Deposits |  | 65,194 |  |  |  |  |  |  |
Obligations related to securities sold under repurchase agreements |  | 1,001 |  |  |  |  |  |  |
Derivative instruments |  | 4,723 |  |  |  |  |  |  |
Other liabilities |  | 587 |  |  |  |  |  |  |
Subordinated indebtedness |  | 34 |  |  |  |  |  |  |
Total liabilities and equities |  | 71,539 |  |  | 73,705 |  |  |  |
Over 5 years [member] |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |
Securities |  | 52,208 |  |  |  |  |  |  |
Loans |  |  |  |  |  |  |  |  |
Residential mortgages |  | 10,008 |  |  |  |  |  |  |
Personal |  | 5,134 |  |  |  |  |  |  |
Business and government |  | 22,092 |  |  |  |  |  |  |
Derivative instruments |  | 6,067 |  |  |  |  |  |  |
Total assets |  | 95,509 |  |  | 101,546 |  |  |  |
Liabilities |  |  |  |  |  |  |  |  |
Deposits |  | 24,072 |  |  |  |  |  |  |
Derivative instruments |  | 9,839 |  |  |  |  |  |  |
Other liabilities |  | 810 |  |  |  |  |  |  |
Subordinated indebtedness |  | 8,740 |  |  |  |  |  |  |
Total liabilities and equities |  | 43,461 |  |  | 39,445 |  |  |  |
No specific maturity [member] |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |
Securities |  | 68,723 |  |  |  |  |  |  |
Loans |  |  |  |  |  |  |  |  |
Personal |  | 32,145 |  |  |  |  |  |  |
Business and government |  | 12,789 |  |  |  |  |  |  |
Allowance for credit losses |  | (4,191) |  |  |  |  |  |  |
Other assets |  | 50,381 |  |  |  |  |  |  |
Total assets |  | 159,847 |  |  | 146,287 |  |  |  |
Liabilities |  |  |  |  |  |  |  |  |
Deposits |  | 396,250 |  |  |  |  |  |  |
Derivative instruments |  | 6 |  |  |  |  |  |  |
Other liabilities |  | 28,816 |  |  |  |  |  |  |
Equity |  | 61,946 |  |  |  |  |  |  |
Total liabilities and equities |  | $ 487,018 |  |  | $ 465,170 |  |  |  |
[1] | Includes restricted cash of $462 million (April 30, 2024: $522 million) and interest-bearing demand deposits with Bank of Canada.
[2] | Includes customers’ liability under acceptances of $10 million (October 31, 2024: $6 million) in business and government loans and acceptances of $10 million (October 31, 2024: $6 million) in other liabilities. Prior period amounts have been revised to conform to the presentation adopted in the first quarter of 2025.

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