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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Disaggregation of Revenue |  |  |  |
Revenue | $ 1,120,012 | $ 833,896 | $ 3,023,176 | $ 2,217,552
Percentage of revenue from contract with customer (as a percent) | 100.00% | 100.00% | 100.00% | 100.00%
Industrial |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 542,222 | $ 379,605 | $ 1,422,897 | $ 960,263
Percentage of revenue from contract with customer (as a percent) | 48.40% | 45.50% | 47.10% | 43.30%
Education |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 133,422 | $ 115,536 | $ 342,116 | $ 300,374
Percentage of revenue from contract with customer (as a percent) | 11.90% | 13.90% | 11.30% | 13.50%
Office Buildings |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 94,931 | $ 77,806 | $ 255,963 | $ 229,816
Percentage of revenue from contract with customer (as a percent) | 8.50% | 9.30% | 8.50% | 10.40%
Healthcare |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 147,234 | $ 101,446 | $ 423,142 | $ 292,541
Percentage of revenue from contract with customer (as a percent) | 13.20% | 12.20% | 14.00% | 13.20%
Government |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 63,070 | $ 40,268 | $ 186,747 | $ 125,939
Percentage of revenue from contract with customer (as a percent) | 5.60% | 4.80% | 6.20% | 5.70%
Retail, Restaurants and Entertainment |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 84,354 | $ 62,365 | $ 230,370 | $ 155,874
Percentage of revenue from contract with customer (as a percent) | 7.50% | 7.50% | 7.60% | 7.00%
Multi-Family and Residential |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 34,310 | $ 29,741 | $ 88,924 | $ 82,742
Percentage of revenue from contract with customer (as a percent) | 3.10% | 3.60% | 2.90% | 3.70%
Other |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 20,469 | $ 27,129 | $ 73,017 | $ 70,003
Percentage of revenue from contract with customer (as a percent) | 1.80% | 3.20% | 2.40% | 3.20%
New Construction |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 524,122 | $ 397,446 | $ 1,438,453 | $ 1,029,397
Percentage of revenue from contract with customer (as a percent) | 46.80% | 47.60% | 47.60% | 46.40%
Existing Building Construction |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 346,683 | $ 250,893 | $ 910,284 | $ 682,811
Percentage of revenue from contract with customer (as a percent) | 31.00% | 30.10% | 30.10% | 30.80%
Service Projects |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 103,439 | $ 75,525 | $ 273,663 | $ 201,848
Percentage of revenue from contract with customer (as a percent) | 9.20% | 9.10% | 9.00% | 9.10%
Service Calls, Maintenance and Monitoring |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 145,768 | $ 110,032 | $ 400,776 | $ 303,496
Percentage of revenue from contract with customer (as a percent) | 13.00% | 13.20% | 13.30% | 13.70%
Mechanical Services |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 858,768 | $ 690,680 | $ 2,318,036 | $ 1,868,096
Percentage of revenue from contract with customer (as a percent) | 76.70% | 82.80% | 76.70% | 84.20%
Electrical Services |  |  |  |
Disaggregation of Revenue |  |  |  |
Revenue | $ 261,244 | $ 143,216 | $ 705,140 | $ 349,456
Percentage of revenue from contract with customer (as a percent) | 23.30% | 17.20% | 23.30% | 15.80%

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. 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