XML 166 R114.htm IDEA: XBRL DOCUMENT
v3.25.3

Investment Securities - Summary of Analysis of Fair Value and Carrying Value of Investment Securities Measured at Amortized Cost (Parenthetical) (Detail) - CAD ($) $ in Millions | Oct. 31, 2025 | Oct. 31, 2024
--- | --- | ---
Debt securities [member] |  |
Disclosure of financial assets [line items] |  |
Allowance account for credit losses of financial assets | $ 1 | $ 1

X
- Definition Carrying value debt investment securities at amortized cost net of allowances. + References No definition available. + Details
Name: | bns_CarryingValueDebtInvestmentSecuritiesAtAmortizedCostNetOfAllowances
Namespace Prefix: | bns_
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_DisclosureOfFinancialAssetsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfAssetsAxis=ifrs-full_DebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |