Consolidated statement of income (Parenthetical) $ in Billions	12 Months Ended
Oct. 31, 2018 CAD ($)
Profit or loss [abstract]
Interest income calculated based on effective interest method	$ 16.0

The amount of interest revenue calculated using the effective interest method. Effective interest method is the method that is used in the calculation of the amortised cost of a financial asset or a financial liability and in the allocation and recognition of the interest revenue or interest expense in profit or loss over the relevant period. [Refer: Revenue]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2018-01-01
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 82
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_82_a&doctype=Standard
-URIDate 2017-03-09

Name:	ifrs-full_InterestRevenueCalculatedUsingEffectiveInterestMethod
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration