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v3.25.1

Segment Information (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 USD ($) Company | Mar. 31, 2024 USD ($) | Dec. 31, 2024 USD ($)
Segment Reporting Information [Line Items] |  |  |
Number of operating subsidiaries | Company | 100 |  |
Revenues from unrelated entities | $ 3,867,372 | $ 3,432,276 |
Total revenues | 3,867,372 | 3,432,276 |
Operating income (loss) | 318,756 | 259,953 |
Net periodic pension income | 54 | 222 |
Interest income, net | 5,387 | 7,541 |
Income before income taxes | 324,197 | 267,716 |
Cost of sales | 3,144,654 | 2,842,967 |
Selling, general and administrative expenses | 403,962 | 329,356 |
Depreciation and amortization of property, plant, and equipment | 15,582 | 13,337 |
Amortization of identifiable intangible assets | 26,363 | 16,251 |
Capital expenditures | 26,131 | 20,278 |
Total assets | 8,078,872 |  | $ 7,716,473
UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 3,762,071 | 3,327,589 |
Total revenues | 3,762,071 | 3,327,589 |
Operating income (loss) | 365,987 | 293,734 |
Cost of sales | 3,051,557 | 2,750,650 |
Selling, general and administrative expenses | 344,527 | 283,205 |
Depreciation and amortization of property, plant, and equipment | 14,401 | 12,198 |
Amortization of identifiable intangible assets | 26,363 | 16,251 |
Capital expenditures | 22,249 | 16,509 |
Total assets | 7,107,484 |  | 5,976,858
United States Electrical Construction And Facilities Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 1,087,844 | 764,711 |
United States Mechanical Construction And Facilities Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 1,572,602 | 1,427,665 |
United States Building Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 742,623 | 781,160 |
United States Industrial Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 359,002 | 354,053 |
United Kingdom Building Services [Member] [Member] | UNITED KINGDOM |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 105,301 | 104,687 |
Operating Segments [Member] | United States Electrical Construction And Facilities Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 1,089,950 | 765,202 |
Total revenues | 1,114,195 | 766,739 |
Operating income (loss) | 136,057 | 91,589 |
Cost of sales | 876,243 | 626,869 |
Selling, general and administrative expenses | 75,544 | 46,253 |
Depreciation and amortization of property, plant, and equipment | 2,305 | 1,961 |
Amortization of identifiable intangible assets | 9,480 | 1,812 |
Capital expenditures | 4,622 | 1,068 |
Total assets | 2,437,083 |  | 1,314,577
Operating Segments [Member] | United States Mechanical Construction And Facilities Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 1,573,621 | 1,428,981 |
Total revenues | 1,585,114 | 1,436,828 |
Operating income (loss) | 186,747 | 150,720 |
Cost of sales | 1,265,710 | 1,179,405 |
Selling, general and administrative expenses | 120,145 | 97,540 |
Depreciation and amortization of property, plant, and equipment | 4,876 | 3,478 |
Amortization of identifiable intangible assets | 5,397 | 3,828 |
Capital expenditures | 10,979 | 7,395 |
Total assets | 2,617,568 |  | 2,659,184
Operating Segments [Member] | United States Building Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 751,884 | 803,873 |
Operating income (loss) | 36,423 | 33,459 |
Cost of sales | 601,509 | 644,310 |
Selling, general and administrative expenses | 104,691 | 103,391 |
Depreciation and amortization of property, plant, and equipment | 4,041 | 3,927 |
Amortization of identifiable intangible assets | 5,565 | 4,976 |
Capital expenditures | 3,343 | 5,048 |
Total assets | 1,404,624 |  | 1,396,236
Operating Segments [Member] | United States Industrial Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 364,332 | 358,175 |
Operating income (loss) | 6,760 | 17,966 |
Cost of sales | 308,095 | 300,066 |
Selling, general and administrative expenses | 44,147 | 36,021 |
Depreciation and amortization of property, plant, and equipment | 3,179 | 2,832 |
Amortization of identifiable intangible assets | 5,921 | 5,635 |
Capital expenditures | 3,305 | 2,998 |
Total assets | 648,209 |  | 606,861
Operating Segments [Member] | United Kingdom Building Services [Member] [Member] | UNITED KINGDOM |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 105,301 | 104,687 |
Operating income (loss) | 4,987 | 5,377 |
Cost of sales | 93,097 | 92,317 |
Selling, general and administrative expenses | 7,217 | 6,993 |
Depreciation and amortization of property, plant, and equipment | 932 | 893 |
Amortization of identifiable intangible assets | 0 | 0 |
Capital expenditures | 2,456 | 1,945 |
Total assets | 299,103 |  | 283,897
Corporate, Non-Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating income (loss) | (52,218) | (39,158) |
Selling, general and administrative expenses | 52,218 | 39,158 |
Depreciation and amortization of property, plant, and equipment | 249 | 246 |
Capital expenditures | 1,426 | 1,824 |
Total assets | 672,285 |  | $ 1,455,718
Intersegment Eliminations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | (53,454) | (38,026) |
Intersegment Eliminations [Member] | United States Electrical Construction And Facilities Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | (2,106) | (491) |
Intersegment Eliminations [Member] | United States Mechanical Construction And Facilities Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | $ (1,019) | $ (1,316) |

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