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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Disaggregation of Revenue |  |  |  |
Revenue | $ 1,378,124 | $ 1,120,012 | $ 3,849,194 | $ 3,023,176
Percentage of revenue from contract with customer (as a percent) | 100.00% | 100.00% | 100.00% | 100.00%
Manufacturing |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 469,173 | $ 376,505 | $ 1,271,348 | $ 1,029,647
Percentage of revenue from contract with customer (as a percent) | 34.00% | 33.60% | 33.00% | 34.10%
Technology |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 303,847 | $ 165,717 | $ 795,327 | $ 393,250
Percentage of revenue from contract with customer (as a percent) | 22.00% | 14.80% | 20.70% | 13.00%
Healthcare |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 133,130 | $ 147,234 | $ 431,329 | $ 423,142
Percentage of revenue from contract with customer (as a percent) | 9.70% | 13.20% | 11.20% | 14.00%
Education |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 139,206 | $ 133,422 | $ 376,637 | $ 342,116
Percentage of revenue from contract with customer (as a percent) | 10.10% | 11.90% | 9.80% | 11.30%
Office Buildings |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 104,937 | $ 94,931 | $ 299,103 | $ 255,963
Percentage of revenue from contract with customer (as a percent) | 7.60% | 8.50% | 7.80% | 8.50%
Retail, Restaurants and Entertainment |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 77,802 | $ 84,354 | $ 234,779 | $ 230,370
Percentage of revenue from contract with customer (as a percent) | 5.60% | 7.50% | 6.10% | 7.60%
Government |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 85,220 | $ 63,070 | $ 227,232 | $ 186,747
Percentage of revenue from contract with customer (as a percent) | 6.30% | 5.60% | 5.90% | 6.20%
Multi-Family and Residential |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 45,523 | $ 34,310 | $ 136,825 | $ 88,924
Percentage of revenue from contract with customer (as a percent) | 3.30% | 3.10% | 3.50% | 2.90%
Other |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 19,286 | $ 20,469 | $ 76,614 | $ 73,017
Percentage of revenue from contract with customer (as a percent) | 1.40% | 1.80% | 2.00% | 2.40%
New Construction |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 798,289 | $ 524,122 | $ 2,108,153 | $ 1,438,453
Percentage of revenue from contract with customer (as a percent) | 57.90% | 46.80% | 54.80% | 47.60%
Existing Building Construction |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 305,795 | $ 346,683 | $ 974,085 | $ 910,284
Percentage of revenue from contract with customer (as a percent) | 22.20% | 31.00% | 25.30% | 30.10%
Service Projects |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 117,202 | $ 103,439 | $ 335,053 | $ 273,663
Percentage of revenue from contract with customer (as a percent) | 8.50% | 9.20% | 8.70% | 9.00%
Service Calls, Maintenance and Monitoring |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 156,838 | $ 145,768 | $ 431,903 | $ 400,776
Percentage of revenue from contract with customer (as a percent) | 11.40% | 13.00% | 11.20% | 13.30%
Mechanical Segment [Member] |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 1,031,310 | $ 858,768 | $ 2,925,848 | $ 2,318,036
Percentage of revenue from contract with customer (as a percent) | 74.80% | 76.70% | 76.00% | 76.70%
Electrical Segment [Member] |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 346,814 | $ 261,244 | $ 923,346 | $ 705,140
Percentage of revenue from contract with customer (as a percent) | 25.20% | 23.30% | 24.00% | 23.30%

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