XML 158 R95.htm IDEA: XBRL DOCUMENT
v3.25.3

Fair Value Measurement - Fair Value of Derivative Financial Instruments (Detail) - CAD ($) $ in Millions | Oct. 31, 2025 | Oct. 31, 2024
--- | --- | ---
Disclosure of detailed information about financial instruments [line items] |  |
Negative | $ (24,469) | $ (21,777)
Positive | (24,469) | (21,777)
Positive | 38,352 | 36,435
Negative | 41,411 | 40,654
Net | (3,059) | (4,219)
Held For Trading For Trading Purpose [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 34,032 | 33,485
Negative | 39,237 | 39,847
Net | (5,205) | (6,362)
Held For Trading For Trading Purpose [member] | Interest rate derivatives [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 6,003 | 6,644
Negative | 6,101 | 9,674
Net | (98) | (3,030)
Held For Trading For Trading Purpose [member] | Interest rate derivatives [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 6,001 | 6,642
Negative | 6,098 | 9,672
Net | (97) | (3,030)
Held For Trading For Trading Purpose [member] | Interest rate derivatives [member] | Exchange traded [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 2 | 2
Negative | 3 | 2
Net | (1) |
Held For Trading For Trading Purpose [member] | Interest rate derivatives [member] | Forward contract [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 86 | 135
Negative | 182 | 239
Net | (96) | (104)
Held For Trading For Trading Purpose [member] | Interest rate derivatives [member] | Swap contract [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 5,106 | 6,149
Negative | 5,307 | 9,124
Net | (201) | (2,975)
Held For Trading For Trading Purpose [member] | Interest rate derivatives [member] | Purchased options [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 809 | 358
Net | 809 | 358
Held For Trading For Trading Purpose [member] | Interest rate derivatives [member] | Purchased options [member] | Exchange traded [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 2 | 2
Net | 2 | 2
Held For Trading For Trading Purpose [member] | Interest rate derivatives [member] | Written options [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Negative | 609 | 309
Net | (609) | (309)
Held For Trading For Trading Purpose [member] | Interest rate derivatives [member] | Written options [member] | Exchange traded [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Negative | 3 | 2
Net | (3) | (2)
Held For Trading For Trading Purpose [member] | Foreign exchange derivatives [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 12,792 | 12,877
Negative | 13,995 | 14,858
Net | (1,203) | (1,981)
Held For Trading For Trading Purpose [member] | Foreign exchange derivatives [member] | Forward contract [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 7,173 | 7,378
Negative | 6,243 | 6,379
Net | 930 | 999
Held For Trading For Trading Purpose [member] | Foreign exchange derivatives [member] | Swap contract [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 4,979 | 5,056
Negative | 7,174 | 7,944
Net | (2,195) | (2,888)
Held For Trading For Trading Purpose [member] | Foreign exchange derivatives [member] | Purchased options [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 640 | 443
Net | 640 | 443
Held For Trading For Trading Purpose [member] | Foreign exchange derivatives [member] | Written options [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Negative | 578 | 535
Net | (578) | (535)
Held For Trading For Trading Purpose [member] | Credit derivatives [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 77 | 46
Negative | 86 | 55
Net | (9) | (9)
Held For Trading For Trading Purpose [member] | Credit derivatives [member] | Credit default swap contacts protection purchased [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 77 | 46
Negative | 1 | 3
Net | 76 | 43
Held For Trading For Trading Purpose [member] | Credit derivatives [member] | Credit default swap contacts protection sold [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Negative | 85 | 52
Net | (85) | (52)
Held For Trading For Trading Purpose [member] | Equity derivatives [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 11,379 | 10,810
Negative | 14,452 | 11,113
Net | (3,073) | (303)
Held For Trading For Trading Purpose [member] | Equity derivatives [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 5,618 | 4,989
Negative | 9,239 | 6,401
Net | (3,621) | (1,412)
Held For Trading For Trading Purpose [member] | Equity derivatives [member] | Exchange traded [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 5,761 | 5,821
Negative | 5,213 | 4,712
Net | 548 | 1,109
Held For Trading For Trading Purpose [member] | Precious metal and other commodity derivatives [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 3,781 | 3,108
Negative | 4,603 | 4,147
Net | (822) | (1,039)
Held For Trading For Trading Purpose [member] | Precious metal and other commodity derivatives [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 3,513 | 2,692
Negative | 4,414 | 3,906
Net | (901) | (1,214)
Held For Trading For Trading Purpose [member] | Precious metal and other commodity derivatives [member] | Exchange traded [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 268 | 416
Negative | 189 | 241
Net | 79 | 175
Held for hedging and held for trading for economic hedges [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 4,320 | 2,950
Negative | 2,174 | 807
Net | 2,146 | 2,143
Held for hedging and held for trading for economic hedges [member] | Interest rate derivatives [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 105 | 127
Negative | 1,172 | (408)
Net | (1,067) | 535
Held for hedging and held for trading for economic hedges [member] | Interest rate derivatives [member] | Swap contract [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 101 | 124
Negative | 1,171 | (410)
Net | (1,070) | 534
Held for hedging and held for trading for economic hedges [member] | Interest rate derivatives [member] | Purchased options [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 4 | 3
Net | 4 | 3
Held for hedging and held for trading for economic hedges [member] | Interest rate derivatives [member] | Written options [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Negative | 1 | 2
Net | (1) | (2)
Held for hedging and held for trading for economic hedges [member] | Foreign exchange derivatives [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 4,053 | 2,648
Negative | 1,000 | 1,211
Net | 3,053 | 1,437
Held for hedging and held for trading for economic hedges [member] | Foreign exchange derivatives [member] | Forward contract [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 27 | 28
Negative | 63 | 82
Net | (36) | (54)
Held for hedging and held for trading for economic hedges [member] | Foreign exchange derivatives [member] | Swap contract [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 4,026 | 2,620
Negative | 937 | 1,129
Net | 3,089 | 1,491
Held for hedging and held for trading for economic hedges [member] | Equity derivatives [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 162 | 174
Negative | 2 | 4
Net | 160 | 170
Held for hedging and held for trading for economic hedges [member] | Equity derivatives [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 162 | 174
Negative | 2 | 4
Net | 160 | 170
Held for hedging and held for trading for economic hedges [member] | Precious metal and other commodity derivatives [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive |  | 1
Net |  | 1
Held for hedging and held for trading for economic hedges [member] | Precious metal and other commodity derivatives [member] | Over-the-counter clearing house [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive |  | 1
Net |  | 1
Derivatives effect of netting [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Negative | (24,469) | (21,777)
Positive | (24,469) | (21,777)
Derivatives after effect of netting [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Positive | 13,883 | 14,658
Negative | 16,942 | 18,877
Net | $ (3,059) | $ (4,219)

X
- Definition Derivative financial assets liabilities. + References No definition available. + Details
Name: | cm_DerivativeFinancialAssetsLiabilities
Namespace Prefix: | cm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_DerivativeFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_DerivativeFinancialLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfFinancialInstrumentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of financial instruments subject to an enforceable master netting arrangement or similar agreement that are not set off against financial assets. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph IG40D -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_IG40D&doctype=Implementation%20Guidance -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 13C -Subparagraph d -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_13C_d_i&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of financial instruments subject to an enforceable master netting arrangement or similar agreement that are not set off against financial liabilities. [Refer: Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph IG40D -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_IG40D&doctype=Implementation%20Guidance -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 13C -Subparagraph d -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_13C_d_i&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=cm_HeldForTradingForTradingPurposeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=cm_InterestRateDerivativesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cm_TradingActivityByType1Axis=cm_OverthecounterClearingHouseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cm_TradingActivityByType1Axis=cm_ExchangeTradeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_ForwardContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_SwapContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=cm_PurchasedOptionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=cm_WrittenOptionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=cm_ForeignExchangeDerivativesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=cm_CreditDerivativesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=cm_CreditDefaultSwapContactsProtectionPurchasedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=cm_CreditDefaultSwapContactsProtectionSoldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=cm_EquityDerivativesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=cm_PreciousMetalAndOtherCommodityDerivativesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=cm_HeldForHedgingAndHeldForTradingForEconomicHedgesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=cm_DerivativesEffectOfNettingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=cm_DerivativesAfterEffectOfNettingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |