Acquisitions, Goodwill, and Other Intangible Assets, Net - Rollforward of Goodwill by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Goodwill		$ 2,161,700
Accumulated impairment loss		(116,700)
Goodwill, net	$ 2,065,602	2,045,041
Goodwill [Roll Forward]
Goodwill, net, beginning balance	2,045,041
Additions from new business combinations	300
Goodwill, measurement period adjustments	20,300
Goodwill, net, ending balance	2,065,602
Communications
Goodwill [Line Items]
Goodwill		606,100
Accumulated impairment loss		0
Goodwill, net	606,400	606,100
Goodwill [Roll Forward]
Goodwill, net, beginning balance	606,100
Additions from new business combinations	300
Goodwill, measurement period adjustments	0
Goodwill, net, ending balance	606,400
Clean Energy and Infrastructure
Goodwill [Line Items]
Goodwill		703,300
Accumulated impairment loss		0
Goodwill, net	722,700	703,300
Goodwill [Roll Forward]
Goodwill, net, beginning balance	703,300
Additions from new business combinations	0
Goodwill, measurement period adjustments	19,400
Goodwill, net, ending balance	722,700
Oil and Gas
Goodwill [Line Items]
Goodwill		582,200
Accumulated impairment loss		(116,700)
Goodwill, net	466,400	465,500
Goodwill [Roll Forward]
Goodwill, net, beginning balance	465,500
Additions from new business combinations	0
Goodwill, measurement period adjustments	900
Goodwill, net, ending balance	466,400
Power Delivery
Goodwill [Line Items]
Goodwill		270,100
Accumulated impairment loss		0
Goodwill, net	270,100	$ 270,100
Goodwill [Roll Forward]
Goodwill, net, beginning balance	270,100
Additions from new business combinations	0
Goodwill, measurement period adjustments	0
Goodwill, net, ending balance	$ 270,100