long-term debt - TELUS Corporation - Other (unsecured) (Details) $ in Millions, $ in Millions	Jun. 30, 2026 CAD ($)	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)
Redeemable preferred shares
long-term debt
Value of preferred shares issued	$ 51	$ 200	$ 200

The nominal value of capital arising from issuing preference shares. [Refer: Issued capital]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 78
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_e&doctype=Standard
-URIDate 2025-03-27

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