XML 164 R112.htm IDEA: XBRL DOCUMENT
v3.25.3

Investment Securities - Disclosure of Unrealized Gains and Losses on Fair Value Through Other Comprehensive Income Securities (Detail) - Financial assets measured at fair value through other comprehensive income, category [member] - CAD ($) $ in Millions | Oct. 31, 2025 | Oct. 31, 2024
--- | --- | ---
Disclosure of financial assets [line items] |  |
Cost | $ 122,993 | $ 119,148
Gross unrealized gains | 1,661 | 870
Gross unrealized losses | 922 | 1,792
Fair value | 123,732 | 118,226
Canadian federal government issued or guaranteed debt [member] |  |
Disclosure of financial assets [line items] |  |
Cost | 22,815 | 21,473
Gross unrealized gains | 359 | 219
Gross unrealized losses | 64 | 152
Fair value | 23,110 | 21,540
Canadian provincial and municipal debt [member] |  |
Disclosure of financial assets [line items] |  |
Cost | 20,490 | 17,500
Gross unrealized gains | 430 | 234
Gross unrealized losses | 77 | 209
Fair value | 20,843 | 17,525
U.S. treasury and other U.S. agency debt [member] |  |
Disclosure of financial assets [line items] |  |
Cost | 49,111 | 47,156
Gross unrealized gains | 483 | 214
Gross unrealized losses | 558 | 994
Fair value | 49,036 | 46,376
Other foreign government debt [member] |  |
Disclosure of financial assets [line items] |  |
Cost | 27,570 | 29,505
Gross unrealized gains | 358 | 181
Gross unrealized losses | 202 | 400
Fair value | 27,726 | 29,286
Other debt [member] |  |
Disclosure of financial assets [line items] |  |
Cost | 3,007 | 3,514
Gross unrealized gains | 31 | 22
Gross unrealized losses | 21 | 37
Fair value | $ 3,017 | $ 3,499

X
- Definition Financial assets, gross, unrealized gain + References No definition available. + Details
Name: | bns_FinancialAssetsGrossUnrealizedGain
Namespace Prefix: | bns_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Financial assets, gross, unrealized loss + References No definition available. + Details
Name: | bns_FinancialAssetsGrossUnrealizedLoss
Namespace Prefix: | bns_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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
- Definition The amount of financial assets at amortised cost. The amortised cost is the amount at which financial assets are measured at initial recognition minus principal repayments, plus or minus the cumulative amortisation using the effective interest method of any difference between that initial amount and the maturity amount, and adjusted for any impairment. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 8 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_8_f&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_FinancialAssetsAtAmortisedCost
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The fair value of financial assets. [Refer: At fair value [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_25&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_FinancialAssetsAtFairValue
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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