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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disaggregation of Revenue |  |  |
Revenue | $ 4,140,364 | $ 3,073,636 | $ 2,856,659
Percentage of revenue from contract with customer (as a percent) | 100.00% | 100.00% | 100.00%
Industrial |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 1,973,252 | $ 1,356,688 | $ 1,112,075
Percentage of revenue from contract with customer (as a percent) | 47.70% | 44.10% | 38.90%
Healthcare |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 584,023 | $ 417,901 | $ 371,105
Percentage of revenue from contract with customer (as a percent) | 14.10% | 13.60% | 13.00%
Education |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 445,638 | $ 390,251 | $ 487,922
Percentage of revenue from contract with customer (as a percent) | 10.80% | 12.70% | 17.10%
Office Buildings |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 349,235 | $ 308,799 | $ 319,426
Percentage of revenue from contract with customer (as a percent) | 8.40% | 10.10% | 11.20%
Retail, Restaurants and Entertainment |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 311,697 | $ 213,386 | $ 239,541
Percentage of revenue from contract with customer (as a percent) | 7.50% | 6.90% | 8.40%
Government |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 255,314 | $ 174,813 | $ 163,717
Percentage of revenue from contract with customer (as a percent) | 6.20% | 5.70% | 5.70%
Multi-Family and Residential |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 126,339 | $ 112,779 | $ 86,799
Percentage of revenue from contract with customer (as a percent) | 3.00% | 3.70% | 3.00%
Other |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 94,866 | $ 99,019 | $ 76,074
Percentage of revenue from contract with customer (as a percent) | 2.30% | 3.20% | 2.70%
New Construction |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 2,011,992 | $ 1,421,784 | $ 1,333,739
Percentage of revenue from contract with customer (as a percent) | 48.60% | 46.30% | 46.70%
Existing Building Construction |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 1,210,512 | $ 963,461 | $ 910,807
Percentage of revenue from contract with customer (as a percent) | 29.20% | 31.30% | 31.90%
Service Projects |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 382,155 | $ 278,582 | $ 241,402
Percentage of revenue from contract with customer (as a percent) | 9.20% | 9.10% | 8.40%
Service Calls, Maintenance and Monitoring |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 535,705 | $ 409,809 | $ 370,711
Percentage of revenue from contract with customer (as a percent) | 13.00% | 13.30% | 13.00%
Mechanical Services |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 3,178,475 | $ 2,542,623 | $ 2,430,632
Percentage of revenue from contract with customer (as a percent) | 76.80% | 82.70% | 85.10%
Electrical Services |  |  |
Disaggregation of Revenue |  |  |
Revenue | $ 961,889 | $ 531,013 | $ 426,027
Percentage of revenue from contract with customer (as a percent) | 23.20% | 17.30% | 14.90%

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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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