XML 217 R189.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Segment Disclosures Disclosure of entity's operating segments (Details) - segment | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of major customers [line items] |  |
Number of segments | 8 |
Customer 1 |  |
Disclosure of major customers [line items] |  |
Percentage of entity's revenue | 1900.00% | 2800.00%

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- 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_DisclosureOfMajorCustomersLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The percentage of the entity's revenue. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 8 -IssueDate 2017-01-01 -Paragraph 34 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2017-03-01&anchor=para_34&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_PercentageOfEntitysRevenue
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Number Of Reportable Segments + References No definition available. + Details
Name: | tac_NumberOfReportableSegments1
Namespace Prefix: | tac_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | ifrs-full_MajorCustomersAxis=tac_Customer1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |