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Segmented Information (Tables) | 12 Months Ended
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Dec. 31, 2020
Operating segments [Abstract] |
Schedule of Operating Segments | Reportable segments from continuing operations
| For the year ended December 31, 2020
| Canada $ | United States $ | Global $ | Total Segments $ | Adjustments and Eliminations $ | Consolidated $
Total gross revenue | 1,272.6 |  | 2,675.1 |  | 880.6 |  | 4,828.3 |  | (98.2) |  | 4,730.1 |
Less inter-segment revenue | 34.1 |  | 19.9 |  | 44.2 |  | 98.2 |  | (98.2) |  | — |
Gross revenue from external customers | 1,238.5 |  | 2,655.2 |  | 836.4 |  | 4,730.1 |  | — |  | 4,730.1 |
Less subconsultants and other direct expenses | 164.8 |  | 695.4 |  | 185.4 |  | 1,045.6 |  | — |  | 1,045.6 |
Total net revenue | 1,073.7 |  | 1,959.8 |  | 651.0 |  | 3,684.5 |  | — |  | 3,684.5 |
Gross margin | 533.7 |  | 1,048.7 |  | 348.1 |  | 1,930.5 |  | — |  | 1,930.5 |
| For the year ended December 31, 2019
| Canada $ | United States $ | Global $ | Total Segments $ | Adjustments and Eliminations $ | Consolidated $
Total gross revenue | 1,314.7 |  | 2,709.8 |  | 914.2 |  | 4,938.7 |  | (111.4) |  | 4,827.3 |
Less inter-segment revenue | 31.6 |  | 21.7 |  | 58.1 |  | 111.4 |  | (111.4) |  | — |
Gross revenue from external customers | 1,283.1 |  | 2,688.1 |  | 856.1 |  | 4,827.3 |  | — |  | 4,827.3 |
Less subconsultants and other direct expenses | 173.6 |  | 740.5 |  | 201.9 |  | 1,116.0 |  | — |  | 1,116.0 |
Total net revenue | 1,109.5 |  | 1,947.6 |  | 654.2 |  | 3,711.3 |  | — |  | 3,711.3 |
Gross margin | 571.1 |  | 1,070.2 |  | 367.1 |  | 2,008.4 |  | — |  | 2,008.4 |
Schedule of Non-Current Assets and Gross Revenue by Geographical Areas | The following tables disclose disaggregation of revenue by geographic area and services:
Geographic information | Non-Current Assets | Gross Revenue
| December 31, 2020 | December 31, 2019 | For the year ended December 31
| 2020 | 2019
| $ | $ | $ | $
Canada | 646.0 |  | 760.5 |  | 1,238.5 |  | 1,283.1 |
United States | 1,430.0 |  | 1,486.2 |  | 2,655.2 |  | 2,688.1 |
United Kingdom | 142.4 |  | 143.3 |  | 321.5 |  | 279.1 |
Other global geographies | 324.5 |  | 326.4 |  | 514.9 |  | 577.0 |
| 2,542.9 |  | 2,716.4 |  | 4,730.1 |  | 4,827.3 |
Schedule of Gross Revenue by Services | Gross revenue is attributed to countries based on the location of the project.
Gross revenue by services | For the year ended December 31,
| 2020 | 2019
| $ | $
Buildings | 990.8 |  | 1,053.3 |
Energy & Resources | 631.9 |  | 613.1 |
Environmental Services | 757.6 |  | 779.8 |
Infrastructure | 1,345.9 |  | 1,407.9 |
Water | 1,003.9 |  | 973.2 |
Total gross revenue from external customers | 4,730.1 |  | 4,827.3 |

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