v3.19.2

other long-term assets - Costs incurred to obtain and fulfill contracts with customers (Details) - CAD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2019 | Jun. 30, 2019 | Dec. 31, 2018
Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [line items] |  |  |  |
Balance, beginning of period | $ 357 | $ 371 |  |
Additions | 71 | 133 |  |
Amortization | (76) | (152) |  |
Balance, end of period | 352 | 352 |  |
Current |  |  | $ 247 |
Non-current |  |  | 105 | $ 110
Total | 357 | 371 | 352 | 371
Costs incurred to obtain contracts with customers |  |  |  |
Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [line items] |  |  |  |
Balance, beginning of period | 342 | 356 |  |
Additions | 70 | 131 |  |
Amortization | (75) | (150) |  |
Balance, end of period | 337 | 337 |  |
Current |  |  | 242 |
Non-current |  |  | 95 |
Total | 342 | 356 | 337 | 356
Costs incurred to fulfill contracts with customers |  |  |  |
Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [line items] |  |  |  |
Balance, beginning of period | 15 | 15 |  |
Additions | 1 | 2 |  |
Amortization | (1) | (2) |  |
Balance, end of period | 15 | 15 |  |
Current |  |  | 5 |
Non-current |  |  | 10 |
Total | $ 15 | $ 15 | $ 15 | $ 15

X
- Definition The amount of amortisation for assets recognised from the costs incurred to obtain or fulfil contracts with customers. [Refer: Assets recognised from costs to obtain or fulfil contracts with customers; Amortisation expense] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2018-01-01 -Paragraph 128 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=15&date=2018-03-01&anchor=para_128_b&doctype=Standard -URIDate 2018-03-16 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of assets recognised from the costs to obtain or fulfil contracts with customers. The costs to obtain a contract with a customer are the incremental costs of obtaining the contract that the entity would not have incurred if the contract had not been obtained. The costs to fulfil a contract with a customer are the costs that relate directly to a contract or to an anticipated contract that the entity can specifically identify. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2018-01-01 -Paragraph 128 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=15&date=2018-03-01&anchor=para_128_a&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_AssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomers
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of additions for assets recognised from the costs incurred to obtain or fulfil contracts with customers. + References No definition available. + Details
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Namespace Prefix: | tu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of current assets recognised from the costs to obtain or fulfil contracts with customers. The costs to obtain a contract with a customer are the incremental costs of obtaining the contract that the entity would not have incurred if the contract had not been obtained. The costs to fulfil a contract with a customer are the costs that relate directly to a contract or to an anticipated contract that the entity can specifically identify. + References No definition available. + Details
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Namespace Prefix: | tu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of non-current assets recognised from the costs to obtain or fulfill contracts with customers. The costs to obtain a contract with a customer are the incremental costs of obtaining the contract that the entity would not have incurred if the contract had not been obtained. The costs to fulfil a contract with a customer are the costs that relate directly to a contract or to an anticipated contract that the entity can specifically identify. + References No definition available. + Details
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Namespace Prefix: | tu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
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Namespace Prefix: |
Data Type: | na
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X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |