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Segmented Information - Schedule of Gross Revenue by Services (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disclosure of products and services [line items] |  |
Gross revenue | $ 7,500.0 | $ 6,479.6
Infrastructure |  |
Disclosure of products and services [line items] |  |
Gross revenue | 2,040.0 | 1,723.7
Water |  |
Disclosure of products and services [line items] |  |
Gross revenue | 1,567.6 | 1,368.9
Buildings |  |
Disclosure of products and services [line items] |  |
Gross revenue | 1,661.7 | 1,232.6
Environmental Services |  |
Disclosure of products and services [line items] |  |
Gross revenue | 1,491.7 | 1,410.6
Energy & Resources |  |
Disclosure of products and services [line items] |  |
Gross revenue | $ 739.0 | $ 743.8

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- Definition The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 114 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_114&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 113 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_113_a&doctype=Standard -URIDate 2024-03-27 + Details
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