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IFRS 7 - Disclosure - Credit Risk - Summary of Exposure to Credit Risk (Detail) - CAD ($) $ in Millions | Apr. 30, 2025 | Oct. 31, 2024
--- | --- | ---
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | $ 1,060,572 | $ 1,022,941
Business and government portfolios [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 544,304 | 522,546
Business and government portfolios [member] | Drawn [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 418,601 | 402,653
Business and government portfolios [member] | Undrawn commitments [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 64,448 | 63,961
Business and government portfolios [member] | Repo style transactions [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 475,812 | 408,202
Business and government portfolios [member] | Other off balance sheet items [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 18,578 | 17,565
Business and government portfolios [member] | OTC derivatives [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 20,816 | 18,932
Retail portfolios [member] | Drawn [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 341,703 | 338,797
Retail portfolios [member] | Undrawn commitments [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 114,383 | 108,888
Retail portfolios [member] | Other off balance sheet items [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 605 | 558
Securitization exposures [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 59,577 | 52,152
Repo style transaction collateral [member] | Business and government portfolios [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 453,951 | 388,767
Gross carrying amount [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 1,514,523 | 1,411,708
Gross carrying amount [member] | Business and government portfolios [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 998,255 | 911,313
Gross carrying amount [member] | Retail portfolios [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 456,691 | 448,243
Internal Ratings Based [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 1,006,823 | 973,004
Internal Ratings Based [member] | Business and government portfolios [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 525,799 | 504,932
Internal Ratings Based [member] | Business and government portfolios [member] | Drawn [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 401,816 | 386,836
Internal Ratings Based [member] | Business and government portfolios [member] | Undrawn commitments [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 63,389 | 62,778
Internal Ratings Based [member] | Business and government portfolios [member] | Repo style transactions [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 475,812 | 408,201
Internal Ratings Based [member] | Business and government portfolios [member] | Other off balance sheet items [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 18,042 | 17,078
Internal Ratings Based [member] | Business and government portfolios [member] | OTC derivatives [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 20,691 | 18,806
Internal Ratings Based [member] | Retail portfolios [member] | Drawn [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 334,724 | 331,821
Internal Ratings Based [member] | Retail portfolios [member] | Undrawn commitments [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 110,255 | 104,906
Internal Ratings Based [member] | Retail portfolios [member] | Other off balance sheet items [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 481 | 444
Internal Ratings Based [member] | Securitization exposures [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 35,564 | 30,901
Internal Ratings Based [member] | Repo style transaction collateral [member] | Business and government portfolios [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 453,951 | 388,767
Internal Ratings Based [member] | Gross carrying amount [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 1,460,774 | 1,361,771
Internal Ratings Based [member] | Gross carrying amount [member] | Business and government portfolios [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 979,750 | 893,699
Internal Ratings Based [member] | Gross carrying amount [member] | Retail portfolios [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 445,460 | 437,171
Standardized approach risk [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 53,749 | 49,937
Standardized approach risk [member] | Business and government portfolios [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 18,505 | 17,614
Standardized approach risk [member] | Business and government portfolios [member] | Drawn [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 16,785 | 15,817
Standardized approach risk [member] | Business and government portfolios [member] | Undrawn commitments [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 1,059 | 1,183
Standardized approach risk [member] | Business and government portfolios [member] | Repo style transactions [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk |  | 1
Standardized approach risk [member] | Business and government portfolios [member] | Other off balance sheet items [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 536 | 487
Standardized approach risk [member] | Business and government portfolios [member] | OTC derivatives [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 125 | 126
Standardized approach risk [member] | Retail portfolios [member] | Drawn [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 6,979 | 6,976
Standardized approach risk [member] | Retail portfolios [member] | Undrawn commitments [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 4,128 | 3,982
Standardized approach risk [member] | Retail portfolios [member] | Other off balance sheet items [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 124 | 114
Standardized approach risk [member] | Securitization exposures [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 24,013 | 21,251
Standardized approach risk [member] | Gross carrying amount [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 53,749 | 49,937
Standardized approach risk [member] | Gross carrying amount [member] | Business and government portfolios [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | 18,505 | 17,614
Standardized approach risk [member] | Gross carrying amount [member] | Retail portfolios [member] |  |
Disclosure of credit risk exposure [line items] |  |
Exposure to Credit Risk | $ 11,231 | $ 11,072

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- Definition The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35K -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35K_a&doctype=Standard -URIDate 2024-03-27 + Details
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