Revenue from Contracts with Customers - Schedule of Disaggregation of Revenues (Details) - USD ($)
$ in Thousands |
3 Months Ended |
6 Months Ended |
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 5,154,892
|
$ 4,304,400
|
$ 9,783,125
|
$ 8,171,772
|
| UNITED STATES |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
5,154,892
|
4,169,836
|
9,783,125
|
7,931,907
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
1,662,501
|
1,340,247
|
3,109,915
|
2,428,091
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
1,663,380
|
1,341,883
|
3,111,230
|
2,431,833
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Network and Communications Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 973,046
|
$ 669,966
|
$ 1,730,417
|
$ 1,186,303
|
| Percent of total segment revenues |
|
58.00%
|
50.00%
|
56.00%
|
49.00%
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Commercial Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 114,728
|
$ 116,536
|
$ 221,679
|
$ 215,094
|
| Percent of total segment revenues |
|
7.00%
|
8.00%
|
7.00%
|
9.00%
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Manufacturing and Industrial Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 111,754
|
$ 111,158
|
$ 224,599
|
$ 209,633
|
| Percent of total segment revenues |
|
7.00%
|
8.00%
|
7.00%
|
8.00%
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Healthcare Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 116,177
|
$ 133,680
|
$ 229,822
|
$ 241,416
|
| Percent of total segment revenues |
|
7.00%
|
10.00%
|
7.00%
|
10.00%
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | High-Tech Manufacturing Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 31,111
|
$ 36,114
|
$ 56,206
|
$ 81,124
|
| Percent of total segment revenues |
|
2.00%
|
3.00%
|
2.00%
|
3.00%
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Institutional Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 105,169
|
$ 67,372
|
$ 187,745
|
$ 119,081
|
| Percent of total segment revenues |
|
6.00%
|
5.00%
|
6.00%
|
5.00%
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Transportation Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 41,835
|
$ 66,528
|
$ 98,638
|
$ 128,556
|
| Percent of total segment revenues |
|
3.00%
|
5.00%
|
3.00%
|
5.00%
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Water and Wastewater Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 6,460
|
$ 7,527
|
$ 14,101
|
$ 20,286
|
| Percent of total segment revenues |
|
1.00%
|
1.00%
|
1.00%
|
1.00%
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Hospitality and Entertainment Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 36,497
|
$ 26,401
|
$ 95,218
|
$ 49,625
|
| Percent of total segment revenues |
|
2.00%
|
2.00%
|
3.00%
|
2.00%
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Short-Duration Projects [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
[1] |
$ 91,171
|
$ 84,705
|
$ 190,374
|
$ 139,682
|
| Percent of total segment revenues |
|
5.00%
|
6.00%
|
6.00%
|
6.00%
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Service Work [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 35,432
|
$ 21,896
|
$ 62,431
|
$ 41,033
|
| Percent of total segment revenues |
|
2.00%
|
2.00%
|
2.00%
|
2.00%
|
| United States Electrical Construction And Facilities Services [Member] | UNITED STATES | Intersegment Eliminations [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ (879)
|
$ (1,636)
|
$ (1,315)
|
$ (3,742)
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
2,300,873
|
1,755,258
|
4,327,214
|
3,327,860
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
2,308,799
|
1,756,632
|
4,340,316
|
3,330,253
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Network and Communications Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 799,293
|
$ 389,676
|
$ 1,413,117
|
$ 720,037
|
| Percent of total segment revenues |
|
35.00%
|
22.00%
|
33.00%
|
21.00%
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Commercial Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 274,235
|
$ 217,007
|
$ 512,643
|
$ 396,910
|
| Percent of total segment revenues |
|
12.00%
|
12.00%
|
12.00%
|
12.00%
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Manufacturing and Industrial Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 271,186
|
$ 229,622
|
$ 510,051
|
$ 407,523
|
| Percent of total segment revenues |
|
12.00%
|
13.00%
|
12.00%
|
12.00%
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Healthcare Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 168,143
|
$ 150,052
|
$ 319,758
|
$ 293,615
|
| Percent of total segment revenues |
|
7.00%
|
9.00%
|
7.00%
|
9.00%
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | High-Tech Manufacturing Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 227,646
|
$ 281,434
|
$ 433,126
|
$ 563,805
|
| Percent of total segment revenues |
|
10.00%
|
16.00%
|
10.00%
|
17.00%
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Institutional Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 200,027
|
$ 112,711
|
$ 370,361
|
$ 197,567
|
| Percent of total segment revenues |
|
8.00%
|
6.00%
|
8.00%
|
6.00%
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Transportation Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 10,359
|
$ 10,053
|
$ 18,954
|
$ 24,169
|
| Percent of total segment revenues |
|
1.00%
|
1.00%
|
1.00%
|
1.00%
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Water and Wastewater Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 86,174
|
$ 90,239
|
$ 173,724
|
$ 166,687
|
| Percent of total segment revenues |
|
4.00%
|
5.00%
|
4.00%
|
5.00%
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Hospitality and Entertainment Market Sector [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 36,035
|
$ 36,862
|
$ 63,723
|
$ 66,067
|
| Percent of total segment revenues |
|
1.00%
|
2.00%
|
1.00%
|
2.00%
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Short-Duration Projects [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
[1] |
$ 53,844
|
$ 86,203
|
$ 162,062
|
$ 194,729
|
| Percent of total segment revenues |
|
2.00%
|
5.00%
|
4.00%
|
6.00%
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES | Operating Segments [Member] | Service Work [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 181,857
|
$ 152,773
|
$ 362,797
|
$ 299,144
|
| Percent of total segment revenues |
|
8.00%
|
9.00%
|
8.00%
|
9.00%
|
| United States Mechanical Construction And Facilities Services [Member] | UNITED STATES | Intersegment Eliminations [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ (7,926)
|
$ (1,374)
|
$ (13,102)
|
$ (2,393)
|
| United States Building Services [Member] | UNITED STATES |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
837,706
|
793,259
|
1,610,355
|
1,535,882
|
| United States Building Services [Member] | UNITED STATES | Mechanical Services [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 649,737
|
$ 619,516
|
$ 1,242,505
|
$ 1,178,002
|
| Percent of total segment revenues |
|
77.00%
|
78.00%
|
77.00%
|
77.00%
|
| United States Building Services [Member] | UNITED STATES | Commercial Site-Based Services [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 147,946
|
$ 133,560
|
$ 289,544
|
$ 276,869
|
| Percent of total segment revenues |
|
18.00%
|
17.00%
|
18.00%
|
18.00%
|
| United States Building Services [Member] | UNITED STATES | Government Site-Based Services [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 40,023
|
$ 40,183
|
$ 78,306
|
$ 81,011
|
| Percent of total segment revenues |
|
5.00%
|
5.00%
|
5.00%
|
5.00%
|
| United States Industrial Services [Member] | UNITED STATES |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 353,812
|
$ 281,072
|
$ 735,641
|
$ 640,074
|
| United States Industrial Services [Member] | UNITED STATES | Field Services [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 320,138
|
$ 241,930
|
$ 669,188
|
$ 559,597
|
| Percent of total segment revenues |
|
90.00%
|
86.00%
|
91.00%
|
87.00%
|
| United States Industrial Services [Member] | UNITED STATES | Shop Services [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 33,674
|
$ 39,142
|
$ 66,453
|
$ 80,477
|
| Percent of total segment revenues |
|
10.00%
|
14.00%
|
9.00%
|
13.00%
|
| United Kingdom Building Services [Member] | UNITED KINGDOM |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 0
|
$ 134,564
|
$ 0
|
$ 239,865
|
| United Kingdom Building Services [Member] | UNITED KINGDOM | Service Work [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 0
|
$ 69,661
|
$ 0
|
$ 117,692
|
| Percent of total segment revenues |
|
0.00%
|
52.00%
|
0.00%
|
49.00%
|
| United Kingdom Building Services [Member] | UNITED KINGDOM | Project Work [Member] |
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
| Revenues from unrelated entities |
|
$ 0
|
$ 64,903
|
$ 0
|
$ 122,173
|
| Percent of total segment revenues |
|
0.00%
|
48.00%
|
0.00%
|
51.00%
|
|
|