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v3.22.1

Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | $ 2,592,549 | $ 2,304,049 |
Total revenues | 2,592,549 | 2,304,049 |
Operating income (loss) | 99,957 | 117,004 |
Net periodic pension (cost) income | 1,169 | 908 |
Interest expense, net | (1,289) | (1,363) |
Income before income taxes | 99,837 | 116,549 |
Total assets | 5,231,154 |  | $ 5,441,446
UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 2,461,052 | 2,177,314 |
Total revenues | 2,461,052 | 2,177,314 |
Operating income (loss) | 115,847 | 132,105 |
Total assets | 4,338,452 |  | 4,206,824
United States Electrical Construction And Facilities Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 522,030 | 459,395 |
United States Mechanical Construction And Facilities Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 1,000,470 | 914,501 |
United States Building Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 627,801 | 568,036 |
United States Industrial Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 310,751 | 235,382 |
United Kingdom Building Services [Member] [Member] | UNITED KINGDOM |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 131,497 | 126,735 |
Operating Segments [Member] | United States Electrical Construction And Facilities Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 523,010 | 460,605 |
Total revenues | 523,414 | 460,775 |
Operating income (loss) | 19,993 | 40,252 |
Total assets | 847,786 |  | 855,417
Operating Segments [Member] | United States Mechanical Construction And Facilities Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | 1,002,738 | 916,172 |
Total revenues | 1,004,856 | 916,722 |
Operating income (loss) | 58,674 | 63,176 |
Total assets | 1,698,791 |  | 1,672,546
Operating Segments [Member] | United States Building Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 652,231 | 590,445 |
Operating income (loss) | 23,922 | 31,120 |
Total assets | 1,132,080 |  | 1,089,844
Operating Segments [Member] | United States Industrial Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 324,501 | 245,928 |
Operating income (loss) | 13,258 | (2,443) |
Total assets | 659,795 |  | 589,017
Operating Segments [Member] | United Kingdom Building Services [Member] [Member] | UNITED KINGDOM |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 131,497 | 126,735 |
Operating income (loss) | 10,588 | 9,411 |
Total assets | 259,522 |  | 241,740
Intersegment Eliminations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | (43,950) | (36,556) |
Intersegment Eliminations [Member] | United States Electrical Construction And Facilities Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | (980) | (1,210) |
Intersegment Eliminations [Member] | United States Mechanical Construction And Facilities Services [Member] | UNITED STATES |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from unrelated entities | (2,268) | (1,671) |
Corporate, Non-Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating income (loss) | (26,478) | $ (24,512) |
Total assets | $ 633,180 |  | $ 992,882

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