v3.24.2.u1

other income (Details) - CAD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
other income
Government assistance	$ 4	$ 9	$ 4	$ 10
Other sublet revenue	2	2	3	3
Investment income (loss), gain (loss) on disposal of assets and other	23	(4)	47	(7)
Interest income	1	2	3	4
Changes in provisions related to business combinations	44	3	83	41
Total	$ 74	$ 12	$ 140	$ 51

X

- Definition

The amount of revenue arising from sources that the entity does not separately disclose in the same statement or note. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2023-03-23

+ Details

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

X

- Definition

Government assistance income, including deferral account amortization

+ References

No definition available.

+ Details

Name:	tu_GovernmentAssistance
Namespace Prefix:	tu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Interest income from real estate joint ventures.

+ References

No definition available.

+ Details

Name:	tu_InterestIncomeRealEstateJointVentures
Namespace Prefix:	tu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Changes in the business combination-related provisions that are recognized in other operating income.

+ References

No definition available.

+ Details

Name:	tu_OtherIncomeChangeInBusinessCombinationRelatedProvisions
Namespace Prefix:	tu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of other income from subleasing right-of-use assets. Sublease is a transaction for which an underlying asset is re-leased by a lessee ('intermediate lessor') to a third party, and the lease ('head lease') between the head lessor and lessee remains in effect.

+ References

No definition available.

+ Details

Name:	tu_OtherIncomeFromSubleasingRightOfUseAssets
Namespace Prefix:	tu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Other Operating Income items

+ References

No definition available.

+ Details

Name:	tu_OtherOperatingIncomeAbstract
Namespace Prefix:	tu_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Investment income, gains on the disposal of assets, and other income recognized in other operating income.

+ References

No definition available.

+ Details

Name:	tu_OtherOperatingIncomeInvestmentIncomeGainOnDisposalsOfAssetsAndOther
Namespace Prefix:	tu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration