The amount of the estimated financial effect of contingent liabilities. [Refer: Contingent liabilities [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2021-01-01
-Paragraph 86
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_86_a&doctype=Standard
-URIDate 2021-03-24

Name:	ifrs-full_EstimatedFinancialEffectOfContingentLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

COMMITMENTS AND CONTINGENT LIABILITIES - Narrative (Details) - Legal proceedings provision [member] - CAD ($)	Oct. 29, 2021	Aug. 15, 2019
CRTC
Disclosure of contingent liabilities [line items]
Markup (as a percent)		10.00%
Refund amount		$ 25,000,000
Videotron
Disclosure of contingent liabilities [line items]
Estimated impact that would have resulted this quarter for CRTC's order as drafted	$ 850,000,000