v3.19.2

other operating income (Details) - CAD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
other operating income |  |  |  |
Government assistance, including deferral account amortization | $ 5 | $ 6 | $ 12 | $ 12
Investment income, gain(loss) on disposal of assets and other | 4 | 7 | 13 | 26
Interest income | 1 |  | 2 | 1
Total | $ 10 | $ 13 | $ 27 | $ 39

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 2018-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard -URIDate 2018-03-16 + 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 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