Land, Building and Equipment - Carrying Value of Finance Lease Property (Detail) - CAD ($) $ in Millions	12 Months Ended
Oct. 31, 2019	Oct. 31, 2018
Disclosure of finance lease and operating lease by lessor [abstract]
Balance at beginning of year	$ 363	$ 379
Depreciation	(24)	(23)
Foreign currency adjustments		7
Balance at end of year	$ 339	$ 363

The amount of assets recognised by the entity, which are leased under finance leases.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2019-01-01
-Name IAS
-Number 17
-IssueDate 2018-01-01
-Paragraph 31
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2018-03-02&anchor=para_31_a&doctype=Standard&book=b
-URIDate 2018-03-16

Name:	ifrs-full_RecognisedFinanceLeaseAsAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant