XML 223 R190.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Segments Disclosures - Additions to non-current assets (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of operating segments [line items] |  |  |
PP&E | $ 875 | $ 918 | $ 480
Intangible assets | 13 | 31 | 9
Corporate |  |  |
Disclosure of operating segments [line items] |  |  |
PP&E | 54 | 75 | 28
Intangible assets | 13 | 9 | 8
Operating segments | Hydro |  |  |
Disclosure of operating segments [line items] |  |  |
PP&E | 42 | 36 | 29
Intangible assets | 0 | 0 | 0
Operating segments | Wind and Solar |  |  |
Disclosure of operating segments [line items] |  |  |
PP&E | 674 | 745 | 166
Intangible assets | 0 | 19 | 0
Operating segments | Gas |  |  |
Disclosure of operating segments [line items] |  |  |
PP&E | 89 | 43 | 167
Intangible assets | 0 | 0 | 0
Operating segments | Energy Transition |  |  |
Disclosure of operating segments [line items] |  |  |
PP&E | 16 | 19 | 90
Intangible assets | 0 | 0 | 1
Operating segments | Energy Marketing |  |  |
Disclosure of operating segments [line items] |  |  |
PP&E | 0 | 0 | 0
Intangible assets | $ 0 | $ 3 | $ 0

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

X
- Definition The cash outflow for the purchases of intangible assets, classified as investing activities. [Refer: Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 16 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_16_a&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for the purchases of property, plant and equipment, classified as investing activities. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 16 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_16_a&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_SegmentsAxis=tac_Corporate1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentConsolidationItemsAxis=ifrs-full_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=tac_HydroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=tac_WindandSolarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=tac_GasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=tac_EnergyTransitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=tac_EnergyMarketingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |