Acquisitions, Goodwill, and Other Intangible Assets, Net - Rollforward of Goodwill by Segment (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Goodwill [Line Items]
Goodwill		$ 2,161,700
Accumulated impairment loss		(116,700)
Goodwill, net	$ 2,079,522	2,045,041
Goodwill [Roll Forward]
Goodwill, net, beginning balance	2,045,041
Additions from new business combinations	9,500
Goodwill, measurement period adjustments	24,700
Currency translation adjustments	300
Goodwill, net, ending balance	2,079,522
Depreciation Expense
Goodwill [Roll Forward]
Goodwill, measurement period adjustments	(6,000)
Revenues
Goodwill [Roll Forward]
Goodwill, measurement period adjustments	13,000
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization
Goodwill [Roll Forward]
Goodwill, measurement period adjustments	(3,000)
Communications
Goodwill [Line Items]
Goodwill		606,100
Accumulated impairment loss		0
Goodwill, net	615,000	606,100
Goodwill [Roll Forward]
Goodwill, net, beginning balance	606,100
Additions from new business combinations	9,500
Goodwill, measurement period adjustments	(600)
Currency translation adjustments	0
Goodwill, net, ending balance	615,000
Clean Energy and Infrastructure
Goodwill [Line Items]
Goodwill		703,300
Accumulated impairment loss		0
Goodwill, net	727,100	703,300
Goodwill [Roll Forward]
Goodwill, net, beginning balance	703,300
Additions from new business combinations	0
Goodwill, measurement period adjustments	23,800
Currency translation adjustments	0
Goodwill, net, ending balance	727,100
Oil and Gas
Goodwill [Line Items]
Goodwill		582,200
Accumulated impairment loss		(116,700)
Goodwill, net	466,700	465,500
Goodwill [Roll Forward]
Goodwill, net, beginning balance	465,500
Additions from new business combinations	0
Goodwill, measurement period adjustments	900
Currency translation adjustments	300
Goodwill, net, ending balance	466,700
Power Delivery
Goodwill [Line Items]
Goodwill		270,100
Accumulated impairment loss		0
Goodwill, net	270,700	$ 270,100
Goodwill [Roll Forward]
Goodwill, net, beginning balance	270,100
Additions from new business combinations	0
Goodwill, measurement period adjustments	600
Currency translation adjustments	0
Goodwill, net, ending balance	$ 270,700