XML 202 R167.htm IDEA: XBRL DOCUMENT v3.22.4

Preferred Shares - Issued and Outstanding (Details) - CAD ($) shares in Millions, $ in Millions	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021	Mar. 31, 2021
Preferred Shares
Disclosure of classes of share capital [line items]
Number of shares outstanding (in shares)	38.6		38.6
Number of shares issued (in shares)	38.6		38.6
Amount	$ 942		$ 942
Series A
Disclosure of classes of share capital [line items]
Number of shares outstanding (in shares)	9.6		9.6	10.2
Number of shares issued (in shares)	9.6		9.6	10.2
Amount	$ 235		$ 235
Series B
Disclosure of classes of share capital [line items]
Number of shares outstanding (in shares)	2.4		2.4	1.8
Number of shares issued (in shares)	2.4		2.4	1.8
Amount	$ 58		$ 58
Series C
Disclosure of classes of share capital [line items]
Number of shares outstanding (in shares)	10.0	11.0	11.0
Number of shares issued (in shares)	10.0	11.0	11.0
Amount	$ 243		$ 269
Series D
Disclosure of classes of share capital [line items]
Number of shares outstanding (in shares)	1.0		0.0
Number of shares issued (in shares)	1.0		0.0
Amount	$ 26		$ 0
Series E
Disclosure of classes of share capital [line items]
Number of shares outstanding (in shares)	9.0		9.0
Number of shares issued (in shares)	9.0		9.0
Amount	$ 219		$ 219
Series G
Disclosure of classes of share capital [line items]
Number of shares outstanding (in shares)	6.6		6.6
Number of shares issued (in shares)	6.6		6.6
Amount	$ 161		$ 161

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

X

- Definition

The nominal value of capital issued.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 78
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_78_e&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_IssuedCapital
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The number of shares issued by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 106
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_106_d&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_NumberOfSharesIssued
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 79
-Subparagraph a
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_79_a_iv&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_NumberOfSharesOutstanding
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	ifrs-full_ClassesOfShareCapitalAxis=ifrs-full_PreferenceSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfShareCapitalAxis=tac_PreferenceSharesSeriesAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfShareCapitalAxis=tac_PreferenceSharesSeriesBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfShareCapitalAxis=tac_PreferenceSharesSeriesCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfShareCapitalAxis=tac_PreferenceSharesSeriesDMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfShareCapitalAxis=tac_PreferenceSharesSeriesEMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfShareCapitalAxis=tac_PreferenceSharesSeriesGMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: