XML 170 R135.htm IDEA: XBRL DOCUMENT
v3.22.4

Property, Plant, and Equipment - Reconciliation of the Changes in the Carrying Amount of PP&E (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | $ 5,320 | $ 5,822
Additions | 29 | 15
Disposals | 5 |
Transfer of assets | (29) | (1)
End of the period | 5,556 | 5,320
Other work performed by entity and capitalised | $ 16 | $ 14
Weighted average rate | 6.00% | 6.00%
Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | $ 13,389 | $ 13,398
Additions | 897 | 479
Additions from development projects | 29 | 1
Acquisitions |  | 146
Disposals | 220 | 79
Impairment (charges) reversals | (62) | (589)
Retirement of assets | (39) | (121)
Change in foreign exchange rates | 153 | (27)
Transfer of assets | (6) | (2)
Transfers in (out) of PP&E | (24) | 42
End of the period | 14,012 | 13,389
Cost | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | (31) | 6
Accumulated depreciation |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | (8,069) | (7,576)
Depreciation | 538 | 614
Disposals | (212) | (73)
Retirement of assets | 33 | 112
Change in foreign exchange rates | 102 | (7)
Transfers in (out) of PP&E | (5) | 40
End of the period | (8,456) | (8,069)
Accumulated depreciation | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | (3) | 31
Assets under construction |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 184 | 495
End of the period | 963 | 184
Assets under construction | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 184 | 495
Additions | 891 | 477
Additions from development projects | 17 | 1
Acquisitions |  | 0
Disposals | 0 | 2
Impairment (charges) reversals | 2 | (91)
Retirement of assets | 0 | 0
Change in foreign exchange rates | 13 | 0
Transfer of assets | (138) | (676)
Transfers in (out) of PP&E | 16 | 5
End of the period | 963 | 184
Assets under construction | Cost | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | (22) | (25)
Assets under construction | Accumulated depreciation |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 0 | 0
Depreciation | 0 | 0
Disposals | 0 | 0
Retirement of assets | 0 | 0
Change in foreign exchange rates | 0 | 0
Transfers in (out) of PP&E | 0 | 0
End of the period | 0 | 0
Assets under construction | Accumulated depreciation | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | 0 | 0
Land |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 96 | 96
End of the period | 93 | 96
Land | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 96 | 96
Additions | 0 | 0
Additions from development projects | 0 | 0
Acquisitions |  | 0
Disposals | 3 | 1
Impairment (charges) reversals | 0 | 0
Retirement of assets | 0 | 0
Change in foreign exchange rates | 0 | 0
Transfer of assets | 0 | 1
Transfers in (out) of PP&E | 0 | 0
End of the period | 93 | 96
Land | Cost | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | 0 | 0
Land | Accumulated depreciation |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 0 | 0
Depreciation | 0 | 0
Disposals | 0 | 0
Retirement of assets | 0 | 0
Change in foreign exchange rates | 0 | 0
Transfers in (out) of PP&E | 0 | 0
End of the period | 0 | 0
Land | Accumulated depreciation | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | 0 | 0
Hydro |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 399 | 399
End of the period | 362 | 399
Hydro | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 867 | 846
Additions | 0 | 0
Additions from development projects | 0 | 0
Acquisitions |  | 0
Disposals | 0 | 0
Impairment (charges) reversals | (21) | (3)
Retirement of assets | (9) | (4)
Change in foreign exchange rates | 0 | 0
Transfer of assets | 27 | 27
Transfers in (out) of PP&E | 0 | 0
End of the period | 840 | 867
Hydro | Cost | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | (9) | 0
Hydro | Accumulated depreciation |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | (468) | (447)
Depreciation | 21 | 24
Disposals | 0 | 0
Retirement of assets | 8 | 3
Change in foreign exchange rates | 0 | 0
Transfers in (out) of PP&E | 0 | 0
End of the period | (478) | (468)
Hydro | Accumulated depreciation | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | (3) | 0
Wind and Solar |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 2,183 | 1,777
End of the period | 2,005 | 2,183
Wind and Solar | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 3,276 | 2,746
Additions | 0 | 0
Additions from development projects | 0 | 0
Acquisitions |  | 146
Disposals | 0 | 0
Impairment (charges) reversals | (43) | (12)
Retirement of assets | (9) | (11)
Change in foreign exchange rates | 45 | 3
Transfer of assets | 45 | 280
Transfers in (out) of PP&E | (22) | (4)
End of the period | 3,233 | 3,276
Wind and Solar | Cost | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | 0 | 0
Wind and Solar | Accumulated depreciation |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | (1,093) | (969)
Depreciation | 130 | 130
Disposals | 0 | 0
Retirement of assets | 6 | 6
Change in foreign exchange rates | 11 | 0
Transfers in (out) of PP&E | 0 | 0
End of the period | (1,228) | (1,093)
Wind and Solar | Accumulated depreciation | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | 0 | 0
Gas generation |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 1,909 | 1,877
End of the period | 1,718 | 1,909
Gas generation | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 4,087 | 3,935
Additions | 0 | 0
Additions from development projects | 0 | 0
Acquisitions |  | 0
Disposals | 1 | 2
Impairment (charges) reversals | 0 | (2)
Retirement of assets | (12) | (57)
Change in foreign exchange rates | (4) | (25)
Transfer of assets | 35 | 237
Transfers in (out) of PP&E | 437 | (5)
End of the period | 4,530 | 4,087
Gas generation | Cost | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | 0 | 0
Gas generation | Accumulated depreciation |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | (2,178) | (2,058)
Depreciation | 308 | 184
Disposals | (1) | (1)
Retirement of assets | 10 | 55
Change in foreign exchange rates | 2 | (8)
Transfers in (out) of PP&E | 335 | 0
End of the period | (2,812) | (2,178)
Gas generation | Accumulated depreciation | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | 0 | 0
Energy Transition |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 363 | 968
End of the period | 230 | 363
Energy Transition | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 4,513 | 4,901
Additions | 0 | 0
Additions from development projects | 0 | 0
Acquisitions |  | 0
Disposals | 216 | 74
Impairment (charges) reversals | 0 | (468)
Retirement of assets | (7) | (49)
Change in foreign exchange rates | 97 | 2
Transfer of assets | 19 | 124
Transfers in (out) of PP&E | (442) | 46
End of the period | 3,974 | 4,513
Energy Transition | Cost | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | 0 | 31
Energy Transition | Accumulated depreciation |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | (4,150) | (3,933)
Depreciation | 63 | 264
Disposals | (211) | (72)
Retirement of assets | 7 | 48
Change in foreign exchange rates | 89 | 2
Transfers in (out) of PP&E | (340) | 40
End of the period | (3,744) | (4,150)
Energy Transition | Accumulated depreciation | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | 0 | 31
Capital spares and other |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 186 | 210
End of the period | 185 | 186
Capital spares and other | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | 366 | 379
Additions | 6 | 2
Additions from development projects | 12 | 0
Acquisitions |  | 0
Disposals | 0 | 0
Impairment (charges) reversals | 0 | (13)
Retirement of assets | (2) | 0
Change in foreign exchange rates | 2 | (7)
Transfer of assets | 6 | 5
Transfers in (out) of PP&E | (13) | 0
End of the period | 379 | 366
Capital spares and other | Cost | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | 0 | 0
Capital spares and other | Accumulated depreciation |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Beginning of the period | (180) | (169)
Depreciation | 16 | 12
Disposals | 0 | 0
Retirement of assets | 2 | 0
Change in foreign exchange rates | 0 | (1)
Transfers in (out) of PP&E | 0 | 0
End of the period | (194) | (180)
Capital spares and other | Accumulated depreciation | Assets Held for Sale |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Transfer of assets | 0 | 0
Decommissioning and restoration |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Disposals | 5 |
Decommissioning and restoration | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Revisions/additions to decommissioning and restoration costs | (74) | 135
Decommissioning and restoration | Assets under construction | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Revisions/additions to decommissioning and restoration costs | 0 | 0
Decommissioning and restoration | Land | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Revisions/additions to decommissioning and restoration costs | 0 | 0
Decommissioning and restoration | Hydro | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Revisions/additions to decommissioning and restoration costs | (15) | 1
Decommissioning and restoration | Wind and Solar | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Revisions/additions to decommissioning and restoration costs | (59) | 128
Decommissioning and restoration | Gas generation | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Revisions/additions to decommissioning and restoration costs | (12) | 6
Decommissioning and restoration | Energy Transition | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Revisions/additions to decommissioning and restoration costs | 10 | 0
Decommissioning and restoration | Capital spares and other | Cost |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Revisions/additions to decommissioning and restoration costs | $ 2 | $ 0

X
- Definition The increase in property, plant and equipment resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2022-03-24 -Paragraph 73 -Subparagraph e -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2022-en-r&anchor=para_73_e_iii&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of additions to investment property resulting from subsequent expenditure recognised as an asset. [Refer: Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2022-03-24 -Paragraph 76 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2022-en-r&anchor=para_76_a&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2022-03-24 -Paragraph 79 -Subparagraph d -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2022-en-r&anchor=para_79_d_i&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_AdditionsFromSubsequentExpenditureRecognisedAsAssetInvestmentProperty
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2022-03-24 -Paragraph 73 -Subparagraph e -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2022-en-r&anchor=para_73_e_i&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The weighted average of interest and other costs that an entity incurs in connection with the borrowing of funds applicable to the borrowings of the entity that are outstanding during the period, other than borrowings made specifically for the purpose of obtaining a qualifying asset. [Refer: Weighted average [member]; Borrowings] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 23 -IssueDate 2022-03-24 -Paragraph 26 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=23&code=ifrs-tx-2022-en-r&anchor=para_26_b&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_CapitalisationRateOfBorrowingCostsEligibleForCapitalisation
Namespace Prefix: | ifrs-full_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of depreciation of property, plant and equipment. [Refer: Depreciation and amortisation expense; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2022-03-24 -Paragraph 73 -Subparagraph e -Clause vii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2022-en-r&anchor=para_73_e_vii&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2022-03-24 -Paragraph 75 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2022-en-r&anchor=para_75_a&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_DepreciationPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition The decrease in property, plant and equipment resulting from disposals. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2022-03-24 -Paragraph 73 -Subparagraph e -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2022-en-r&anchor=para_73_e_ii&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_DisposalsPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) in property, plant and equipment resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2022-03-24 -Paragraph 73 -Subparagraph e -Clause viii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2022-en-r&anchor=para_73_e_viii&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) in property, plant and equipment resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2022-03-24 -Paragraph 73 -Subparagraph e -Clause ix -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2022-en-r&anchor=para_73_e_ix&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) in property, plant and equipment resulting from transfers. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2022-03-24 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2022-en-r&anchor=para_73_e&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_IncreaseDecreaseThroughTransfersPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of the entity's own work capitalised from items originally classified as costs that the entity does not separately disclose in the same statement or note. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph IG6 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_IG6&doctype=Implementation%20Guidance -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_85&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_OtherWorkPerformedByEntityAndCapitalised
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2022-03-24 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2022-en-r&anchor=para_73_e&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 54 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_54_a&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_PropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The decrease in property, plant and equipment resulting from retirements. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2022-03-24 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2022-en-r&anchor=para_73_e&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_RetirementsPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount transferred from investment property under construction or development to completed investment property. [Refer: Investment property] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 40 -IssueDate 2022-03-24 -Paragraph 76 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2022-en-r&anchor=para_76&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 40 -IssueDate 2022-03-24 -Paragraph 79 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2022-en-r&anchor=para_79_d&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_TransferFromInvestmentPropertyUnderConstructionOrDevelopmentInvestmentProperty
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount recognised resulting from the write-down of property, plant and equipment to its recoverable amount or reversals of those write-downs. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 98 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_98_a&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_WritedownsReversalsOfPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_GrossCarryingAmountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis=ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_AccumulatedDepreciationAndAmortisationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_ConstructionInProgressMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_LandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=tac_GasGenerationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=tac_CapitalSparesAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ifrs-full_ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |