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Revenue - Disclosure Of Performance Obligations (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2023 CAD ($)
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	$ 4,026,201
Less than one year [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	1,905,017
One to two years [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	725,627
Greater than two years [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	1,395,557
Energy Infrastructure [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	2,248,237
Energy Infrastructure [Member] | Less than one year [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	537,622
Energy Infrastructure [Member] | One to two years [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	474,220
Energy Infrastructure [Member] | Greater than two years [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	1,236,395
After Market Services [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	278,920
After Market Services [Member] | Less than one year [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	90,047
After Market Services [Member] | One to two years [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	50,023
After Market Services [Member] | Greater than two years [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	138,850
Engineered Systems [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	1,499,044
Engineered Systems [Member] | Less than one year [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	1,277,348
Engineered Systems [Member] | One to two years [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	201,384
Engineered Systems [Member] | Greater than two years [Member]
Disclosure of performance obligations [line items]
Revenue from performance obligations satisfied or partially satisfied in previous periods	$ 20,312

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- 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.

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No definition available.

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- Definition

The amount of revenue from performance obligations satisfied (or partially satisfied) in previous periods. [Refer: Performance obligations [member]; Revenue from contracts with customers]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2023-01-01
-Paragraph 116
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_116_c&doctype=Standard
-URIDate 2023-03-23

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