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Corporate Information (Details)	Dec. 31, 2023 segment
Disclosure of operating segments [line items]
Number of segments	6
Generation Segments
Disclosure of operating segments [line items]
Number of segments	4

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

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

X

- 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

X

- Details

Name:	ifrs-full_SegmentsAxis=tac_GenerationSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: