Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue
Revenue	$ 1,174,640	$ 885,216
Percentage of revenue from contract with customer (as a percent)	100.00%	100.00%
Manufacturing
Disaggregation of Revenue
Revenue	$ 366,356	$ 314,729
Percentage of revenue from contract with customer (as a percent)	31.20%	35.50%
Technology
Disaggregation of Revenue
Revenue	$ 226,249	$ 95,455
Percentage of revenue from contract with customer (as a percent)	19.30%	10.80%
Healthcare
Disaggregation of Revenue
Revenue	$ 159,815	$ 134,795
Percentage of revenue from contract with customer (as a percent)	13.50%	15.20%
Education
Disaggregation of Revenue
Revenue	$ 110,253	$ 89,446
Percentage of revenue from contract with customer (as a percent)	9.40%	10.10%
Office Buildings
Disaggregation of Revenue
Revenue	$ 98,195	$ 75,115
Percentage of revenue from contract with customer (as a percent)	8.40%	8.50%
Retail, Restaurants and Entertainment
Disaggregation of Revenue
Revenue	$ 76,194	$ 65,582
Percentage of revenue from contract with customer (as a percent)	6.50%	7.40%
Government
Disaggregation of Revenue
Revenue	$ 64,415	$ 57,465
Percentage of revenue from contract with customer (as a percent)	5.50%	6.50%
Multi-Family and Residential
Disaggregation of Revenue
Revenue	$ 45,007	$ 24,442
Percentage of revenue from contract with customer (as a percent)	3.80%	2.80%
Other
Disaggregation of Revenue
Revenue	$ 28,156	$ 28,187
Percentage of revenue from contract with customer (as a percent)	2.40%	3.20%
New Construction
Disaggregation of Revenue
Revenue	$ 627,952	$ 429,418
Percentage of revenue from contract with customer (as a percent)	53.50%	48.50%
Existing Building Construction
Disaggregation of Revenue
Revenue	$ 309,483	$ 259,285
Percentage of revenue from contract with customer (as a percent)	26.30%	29.30%
Service Projects
Disaggregation of Revenue
Revenue	$ 103,105	$ 76,252
Percentage of revenue from contract with customer (as a percent)	8.80%	8.60%
Service Calls, Maintenance and Monitoring
Disaggregation of Revenue
Revenue	$ 134,100	$ 120,261
Percentage of revenue from contract with customer (as a percent)	11.40%	13.60%
Mechanical Services
Disaggregation of Revenue
Revenue	$ 918,615	$ 682,511
Percentage of revenue from contract with customer (as a percent)	78.20%	77.10%
Electrical Services
Disaggregation of Revenue
Revenue	$ 256,025	$ 202,705
Percentage of revenue from contract with customer (as a percent)	21.80%	22.90%