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long-term debt - TELUS Corporation commercial paper (Details) $ in Millions, $ in Millions | Jan. 01, 2019 CAD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 CAD ($) | Dec. 31, 2017 CAD ($) | Jan. 01, 2017 CAD ($)
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TELUS Corporation commercial paper |  |  |  |  |
Maximum aggregate amount of credit facility |  |  | $ 2,250 | $ 2,250 |
Current portion of non-current borrowings | $ 800 |  | 836 | 1,404 | $ 1,327
Long-term debt |  |  | 14,101 | 13,660 |
TELUS Corporation commercial paper |  |  |  |  |
TELUS Corporation commercial paper |  |  |  |  |
Maximum aggregate amount of credit facility |  |  | 1,400 | 1,400 |
Long-term debt |  | $ 569 | $ 774 | $ 1,140 |
Weighted average interest rate |  | 3.02% | 3.02% |  |
TELUS Corporation credit facility |  |  |  |  |
TELUS Corporation commercial paper |  |  |  |  |
Maximum aggregate amount of credit facility |  |  | $ 2,250 |  |
Current portion of non-current borrowings |  |  | $ 0 |  |

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

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- Definition The effective weighted average interest rate on borrowings. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References No definition available. + Details
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Balance Type: | credit
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- Definition Total long-term borrowings, including the current and non-current portion. + References No definition available. + Details
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Balance Type: | credit
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- Definition Pertains to the TELUS Corporation unsecured commercial paper program. + References No definition available. + Details
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- Details
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- Details
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