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Loans, Impaired Loans and Allowance for Credit Losses - Allowance For Credit Losses (Parenthetical) (Detail) - CAD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2025 | Oct. 31, 2024
Disclosure of detailed information about financial instruments [line items] |  |
Provision for credit losses | $ 4,714 | $ 4,051
Allowance for credit losses for other financial assets | 191 | 200
Other Assets And Reversal of Impairment Loss [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Reversal of impairment loss | (12) | (11)
Residential mortgages personal loans credit cards total retail loans business and government excluding other assets [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Provision for credit losses | 4,714 | 4,051
Stage 2 [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Amortized cost of financial assets before modification | 2,833 | 3,504
Stage 3 [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Amortized cost of financial assets before modification | 899 | 726
Gross impaired loans [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Interest income on impaired loans | $ 439 | $ 443

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- Definition Allowance account for credit losses of financial assets others. + References No definition available. + Details
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- Definition Impaired loans interest income. + References No definition available. + Details
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- Definition Increase decrease in allowance account for credit losses of loans and other assets. + References No definition available. + Details
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- Definition The amortised cost before the modification of financial assets for which the contractual cash flows have been modified during the reporting period while they had a loss allowance measured at an amount equal to lifetime expected credit losses. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35J -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35J_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount recognised as an increase of the carrying amount of an asset or cash-generating unit to its recoverable amount when an impairment loss had been previously recognised. [Refer: Impairment loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2024-01-01 -Paragraph 130 -Subparagraph d -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_130_d_ii&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2024-01-01 -Paragraph 130 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_130_b&doctype=Standard -URIDate 2024-03-27 + Details
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