v3.19.2

long-term debt (Details) $ in Millions, $ in Millions | Jun. 30, 2019 USD ($) | Jun. 30, 2019 CAD ($) | Jan. 01, 2019 CAD ($) | Dec. 31, 2018 CAD ($) | Jun. 30, 2018 CAD ($)
--- | --- | --- | --- | --- | ---
Details of long-term debt |  |  |  |  |
Long-term debt excluding Lease liabilities |  | $ 15,025 |  | $ 13,999 |
Lease liabilities |  | 1,554 |  | 102 |
Long-term debt |  | 16,579 |  | 14,101 | $ 14,145
Current liabilities |  | 1,564 | $ 1,016 | 836 |
Non-current |  | 15,015 | $ 14,466 | 13,265 |
TELUS Corporation notes |  |  |  |  |
Details of long-term debt |  |  |  |  |
Long-term debt excluding Lease liabilities |  | 13,715 |  | 12,186 |
TELUS Corporation commercial paper |  |  |  |  |
Details of long-term debt |  |  |  |  |
Long-term debt excluding Lease liabilities |  | 293 |  | 774 |
Long-term debt | $ 224 | 293 |  | 774 |
TELUS Communications Inc. debentures |  |  |  |  |
Details of long-term debt |  |  |  |  |
Long-term debt excluding Lease liabilities |  | 621 |  | 620 |
TELUS International (Cda) Inc. credit facility |  |  |  |  |
Details of long-term debt |  |  |  |  |
Long-term debt excluding Lease liabilities |  | $ 396 |  | $ 419 |

X
- Definition The current portion of non-current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_CurrentPortionOfLongtermBorrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2019-01-01 -Name IFRS -Number 16 -IssueDate 2018-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=16&date=2018-03-01&anchor=para_47_b&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_LeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The non-current portion of non-current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_LongtermBorrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Pertains to details of long-term debt of the entity. + References No definition available. + Details
Name: | tu_DetailsOfLongTermDebtAbstract
Namespace Prefix: | tu_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total long-term borrowings, including the current and non-current portion. + References No definition available. + Details
Name: | tu_LongTermBorrowingsCurrentAndNonCurrent
Namespace Prefix: | tu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total long-term borrowings, including the current and non-current portion but excluding the lease liabilities. + References No definition available. + Details
Name: | tu_LongTermBorrowingsCurrentAndNonCurrentExcludingLeaseLiabilities
Namespace Prefix: | tu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=tu_TelusCorporationNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=tu_TelusCorporationCommercialPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=tu_TelusCommunicationsInc.DebenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=tu_TelusInternationalCdaInc.CreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |