XML 132 R80.htm IDEA: XBRL DOCUMENT
v3.25.3

IFRS 7 Disclosure - Summary of Market risk measures (Detail) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2025 | Oct. 31, 2024
Market Risk [Line Items] |  |  |
All-Bank VaR |  | $ 8.9 | $ 12.1
Credit Spread plus Interest Rate [Member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 9.5 | 12.5
Credit Spread [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR | [1] | 8.1 | 7.3
Interest rate [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 9.6 | 17.5
Equities [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 3.4 | 5.4
Foreign currency risk [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 3.5 | 2.9
Commodities [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 3.2 | 2.8
Debt Specific [Member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  |  | 3.6
Diversification effect [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | (10.7) | (15.0)
Average [Member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 13.6 | 14.9
Average [Member] | Credit Spread plus Interest Rate [Member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 14.3 | 13.6
Average [Member] | Credit Spread [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR | [1] | 10.3 | 8.4
Average [Member] | Interest rate [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 13.7 | 12.3
Average [Member] | Equities [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 4.8 | 5.1
Average [Member] | Foreign currency risk [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 2.6 | 3.2
Average [Member] | Commodities [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 3.5 | 2.6
Average [Member] | Debt Specific [Member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  |  | 3.4
Average [Member] | Diversification effect [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | (11.6) | (13.1)
High [Member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 21.6 | 24.2
High [Member] | Credit Spread plus Interest Rate [Member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 22.2 | 34.3
High [Member] | Credit Spread [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR | [1] | 18.7 | 13.6
High [Member] | Interest rate [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 28.5 | 26.9
High [Member] | Equities [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 9.9 | 10.1
High [Member] | Foreign currency risk [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 5.9 | 9.4
High [Member] | Commodities [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 6.7 | 4.6
High [Member] | Debt Specific [Member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  |  | 4.8
Low [Member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 7.1 | 8.3
Low [Member] | Credit Spread plus Interest Rate [Member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 8.8 | 6.8
Low [Member] | Credit Spread [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR | [1] | 6.6 | 5.9
Low [Member] | Interest rate [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 6.0 | 5.8
Low [Member] | Equities [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 1.9 | 3.0
Low [Member] | Foreign currency risk [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | 0.7 | 1.1
Low [Member] | Commodities [member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  | $ 2.2 | 1.3
Low [Member] | Debt Specific [Member] |  |  |
Market Risk [Line Items] |  |  |
All-Bank VaR |  |  | $ 2.3
[1] | Effective November 1, 2024, credit spread VaR also captures issuer-specific credit spread volatility which was previously included in debt specific VaR.

X
- References No definition available. + Details
Name: | bns_MarketRiskLineItems
Namespace Prefix: | bns_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value at risk for trading activities + References No definition available. + Details
Name: | bns_ValueAtRiskForTradingActivities
Namespace Prefix: | bns_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=bns_CreditPlusInterestRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_CreditRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_InterestRateRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_EquityPriceRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_CurrencyRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_CommodityPriceRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=bns_DebtSpecificMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_RiskDiversificationEffectMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ExternalCreditGradesAxis=bns_AverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ExternalCreditGradesAxis=bns_HighMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ExternalCreditGradesAxis=bns_LowMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |