Acquisitions, Goodwill and Other Intangible Assets, Net - Rollforward of Goodwill by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill, gross	$ 2,245,700		$ 1,645,300
Accumulated impairment loss	(119,300)		(124,700)
Goodwill, net	2,126,366	$ 2,045,041	1,520,600
Goodwill [Roll Forward]
Goodwill, net, beginning balance	2,045,041	1,520,600
Additions from new business combinations	41,400	544,700
Measurement period adjustments	39,600	(19,300)
Currency translation adjustments	400	(1,000)
Goodwill, net, ending balance	2,126,366	2,045,041	1,520,600
Deferred Tax Liabilities
Goodwill [Roll Forward]
Measurement period adjustments	(36,000)
Contingent Liabilities
Goodwill [Roll Forward]
Measurement period adjustments	28,000
Property, Plant And Equipment, Net
Goodwill [Roll Forward]
Measurement period adjustments	10,000
Depreciation Expense
Goodwill [Roll Forward]
Measurement period adjustments	6,000
Revenues
Goodwill [Roll Forward]
Measurement period adjustments	35,000
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization
Goodwill [Roll Forward]
Measurement period adjustments	8,000
Communications
Goodwill [Line Items]
Goodwill, gross	646,900		614,500
Accumulated impairment loss	0		0
Goodwill, net	646,900	606,100	614,500
Goodwill [Roll Forward]
Goodwill, net, beginning balance	606,100	614,500
Additions from new business combinations	41,400	3,000
Measurement period adjustments	(600)	(11,400)
Currency translation adjustments	0	0
Goodwill, net, ending balance	646,900	606,100	614,500
Clean Energy and Infrastructure
Goodwill [Line Items]
Goodwill, gross	742,000		166,100
Accumulated impairment loss	0		0
Goodwill, net	742,000	703,300	166,100
Goodwill [Roll Forward]
Goodwill, net, beginning balance	703,300	166,100
Additions from new business combinations	0	535,200
Measurement period adjustments	38,700	2,000
Currency translation adjustments	0	0
Goodwill, net, ending balance	742,000	703,300	166,100
Power Delivery
Goodwill [Line Items]
Goodwill, gross	270,800		303,400
Accumulated impairment loss	0		0
Goodwill, net	270,800	270,100	303,400
Goodwill [Roll Forward]
Goodwill, net, beginning balance	270,100	303,400
Additions from new business combinations	0	1,900
Measurement period adjustments	700	(35,200)
Currency translation adjustments	0	0
Goodwill, net, ending balance	270,800	270,100	303,400
Oil and Gas
Goodwill [Line Items]
Goodwill, gross	586,000		561,300
Accumulated impairment loss	(119,300)		(124,700)
Goodwill, net	466,700	465,500	436,600
Goodwill [Roll Forward]
Goodwill, net, beginning balance	465,500	436,600
Additions from new business combinations	0	4,600
Measurement period adjustments	800	25,300
Currency translation adjustments	400	(1,000)
Goodwill, net, ending balance	$ 466,700	$ 465,500	$ 436,600