v3.19.2

leases (Details) - CAD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Income from subleasing right-of-use lease assets |  |  |  |
Portion of real estate right-of-use assets that are subleased, as a percent |  |  | 20.00% |
Co-location sublet revenue included in operating service revenues | $ 4 | $ 4 | $ 9 | $ 9
Lease payments | $ 81 | $ 68 | $ 184 | $ 136

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- Definition The amount of 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. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2019-01-01 -Name IFRS -Number 16 -IssueDate 2018-01-01 -Paragraph 53 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=16&date=2018-03-01&anchor=para_53_f&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_IncomeFromSubleasingRightofuseAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount of payments on leases and subleases recognised as an expense by the lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2019-01-01 -Name IAS -Number 17 -IssueDate 2018-01-01 -Paragraph 35 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2018-03-02&anchor=para_35_c&doctype=Standard&book=b -URIDate 2018-03-16 + Details
Name: | ifrs-full_LeaseAndSubleasePaymentsRecognisedAsExpense
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | tu_IncomeFromSubleasingRightOfUseAssetsAbstract
Namespace Prefix: | tu_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The portion of real estate right-of-use assets that are subleased, as a percent. + References No definition available. + Details
Name: | tu_PercentOfRightOfUseAssetsSubleased
Namespace Prefix: | tu_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration