XML 227 R133.htm IDEA: XBRL DOCUMENT
v3.10.0.1

other long-term assets - Costs incurred to obtain and fulfill contracts with customers (Details) - CAD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2017
Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [line items] |  |  |  |  |
Balance, beginning of period | $ 340 | $ 303 |  |  |
Additions | 321 | 308 |  |  |
Amortization | (290) | (271) |  |  |
Balance, end of period | 371 | 340 |  |  |
Current |  |  | $ 261 | $ 233 |
Non-current |  |  | 110 | 107 | $ 93
Total | 340 | 303 | 371 | 340 |
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 | 329 | 295 |  |  |
Additions | 313 | 304 |  |  |
Amortization | (286) | (270) |  |  |
Balance, end of period | 356 | 329 |  |  |
Current |  |  | 256 | 230 |
Non-current |  |  | 100 | 99 |
Total | 329 | 295 | 356 | 329 |
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 | 11 | 8 |  |  |
Additions | 8 | 4 |  |  |
Amortization | (4) | (1) |  |  |
Balance, end of period | 15 | 11 |  |  |
Current |  |  | 5 | 3 |
Non-current |  |  | 10 | 8 |
Total | 11 | 8 | $ 15 | 11 |
As previously reported |  |  |  |  |
Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [line items] |  |  |  |  |
Balance, beginning of period | 340 |  |  |  |
Balance, end of period |  | 340 |  |  |
Total | 340 | 340 |  | 340 |
As previously reported | 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 | 329 |  |  |  |
Balance, end of period |  | 329 |  |  |
Total | 329 | 329 |  | 329 |
As previously reported | 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 | 11 |  |  |  |
Balance, end of period |  | 11 |  |  |
Total | $ 11 | 11 |  | $ 11 |
Transitional amount |  |  |  |  |
Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [line items] |  |  |  |  |
Balance, beginning of period |  | 303 |  |  |
Total |  | 303 |  |  |
Transitional amount | 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 |  | 295 |  |  |
Total |  | 295 |  |  |
Transitional amount | 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 |  | 8 |  |  |
Total |  | $ 8 |  |  |

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
Name: | ifrs-full_AmortisationAssetsRecognisedFromCostsIncurredToObtainOrFulfilContractsWithCustomers
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
Name: | ifrs-full_DisclosureOfAssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomersLineItems
Namespace Prefix: | ifrs-full_
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
Name: | tu_AdditionsAssetsRecognisedFromCostsIncurredToObtainOrFulfilContractsWithCustomers
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
Name: | tu_CurrentAssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomers
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
Name: | tu_NoncurrentAssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomers
Namespace Prefix: | tu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_CategoriesOfAssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomersAxis=ifrs-full_CostsToObtainContractsWithCustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfAssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomersAxis=tu_CostsToFulfillContractsWithCustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis=ifrs-full_PreviouslyStatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis=ifrs-full_IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |