XML 138 R86.htm IDEA: XBRL DOCUMENT
v3.25.3

Cash and Deposits with Financial Institutions - Additional Information (Detail) - CAD ($) $ in Millions | Oct. 31, 2025 | Oct. 31, 2024
--- | --- | ---
Mandatory Reserve Deposits At Central Banks [abstract] |  |
Cash balances required to maintain with central banks, other regulatory authorities and certain counterparties | $ 6,759 | $ 5,322

X
- Definition Mandatory Reserve Deposits At Central Banks [abstract] + References No definition available. + Details
Name: | bns_MandatoryReserveDepositsAtCentralBanksAbstract
Namespace Prefix: | bns_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of reserve that is kept in deposit at a central bank to fulfil regulatory reserve requirements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_MandatoryReserveDepositsAtCentralBanks
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant