Acquisitions, Goodwill and Other Intangible Assets, Net - Rollforward of Goodwill by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Goodwill, gross	$ 2,313,400		$ 2,161,700
Accumulated impairment loss	(110,300)		(116,700)
Goodwill. net	2,203,077	$ 2,126,366	2,045,000
Goodwill [Roll Forward]
Goodwill, net, beginning balance	2,126,366	2,045,000
Additions from new business combinations	77,200	41,400
Measurement period adjustments	700	39,600
Currency translation adjustments	(1,200)	400
Goodwill, net, ending balance	2,203,077	2,126,366	2,045,000
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	647,600		606,100
Accumulated impairment loss	0		0
Goodwill. net	647,600	646,900	606,100
Goodwill [Roll Forward]
Goodwill, net, beginning balance	646,900	606,100
Additions from new business combinations	0	41,400
Measurement period adjustments	700	(600)
Currency translation adjustments	0	0
Goodwill, net, ending balance	647,600	646,900	606,100
Clean Energy and Infrastructure
Goodwill [Line Items]
Goodwill, gross	742,300		703,300
Accumulated impairment loss	0		0
Goodwill. net	742,300	742,000	703,300
Goodwill [Roll Forward]
Goodwill, net, beginning balance	742,000	703,300
Additions from new business combinations	300	0
Measurement period adjustments	0	38,700
Currency translation adjustments	0	0
Goodwill, net, ending balance	742,300	742,000	703,300
Power Delivery
Goodwill [Line Items]
Goodwill, gross	294,300		270,100
Accumulated impairment loss	0		0
Goodwill. net	294,300	270,800	270,100
Goodwill [Roll Forward]
Goodwill, net, beginning balance	270,800	270,100
Additions from new business combinations	23,500	0
Measurement period adjustments	0	700
Currency translation adjustments	0	0
Goodwill, net, ending balance	294,300	270,800	270,100
Pipeline Infrastructure
Goodwill [Line Items]
Goodwill, gross	629,200		582,200
Accumulated impairment loss	(110,300)		(116,700)
Goodwill. net	518,900	466,700	465,500
Goodwill [Roll Forward]
Goodwill, net, beginning balance	466,700	465,500
Additions from new business combinations	53,400	0
Measurement period adjustments	0	800
Currency translation adjustments	(1,200)	400
Goodwill, net, ending balance	$ 518,900	$ 466,700	$ 465,500