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Segmented Information - Schedule of Gross Revenue by Services (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Disclosure of products and services [line items] |  |
Gross revenue | $ 6,479.6 | $ 5,677.2
Infrastructure |  |
Disclosure of products and services [line items] |  |
Gross revenue | 1,723.7 | 1,597.6
Environmental Services |  |
Disclosure of products and services [line items] |  |
Gross revenue | 1,410.6 | 1,250.9
Water |  |
Disclosure of products and services [line items] |  |
Gross revenue | 1,368.9 | 1,137.2
Buildings |  |
Disclosure of products and services [line items] |  |
Gross revenue | 1,232.6 | 1,027.7
Energy & Resources |  |
Disclosure of products and services [line items] |  |
Gross revenue | $ 743.8 | $ 663.8

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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 2023-01-01 -Paragraph 114 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_114&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2023-01-01 -Paragraph 113 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_113_a&doctype=Standard -URIDate 2023-03-23 + Details
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