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Acquisitions, Goodwill and Other Intangible Assets, Net - Rollforward of Goodwill by Segment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Goodwill [Line Items]      
Goodwill, gross $ 2,364,300   $ 2,245,700
Accumulated impairment loss (115,300)   (119,300)
Goodwill, net 2,248,992 $ 2,203,077 2,126,400
Goodwill [Roll Forward]      
Goodwill, net, beginning balance 2,203,077 2,126,400  
Additions from new business combinations 33,700 77,200  
Measurement period adjustments (c) 9,000 700  
Currency translation adjustments 3,200 (1,200)  
Goodwill, net, ending balance 2,248,992 2,203,077  
Communications      
Goodwill [Line Items]      
Goodwill, gross 557,000   545,800
Accumulated impairment loss 0   0
Goodwill, net 557,000 546,500 545,800
Goodwill [Roll Forward]      
Goodwill, net, beginning balance 546,500 545,800  
Additions from new business combinations 10,500 0  
Measurement period adjustments (c) 0 700  
Currency translation adjustments 0 0  
Goodwill, net, ending balance 557,000 546,500  
Clean Energy and Infrastructure      
Goodwill [Line Items]      
Goodwill, gross 767,500   742,000
Accumulated impairment loss 0   0
Goodwill, net 767,500 742,300 742,000
Goodwill [Roll Forward]      
Goodwill, net, beginning balance 742,300 742,000  
Additions from new business combinations 21,800 300  
Measurement period adjustments (c) 3,400 0  
Currency translation adjustments 0 0  
Goodwill, net, ending balance 767,500 742,300  
Power Delivery      
Goodwill [Line Items]      
Goodwill, gross 397,200   371,900
Accumulated impairment loss 0   0
Goodwill, net 397,200 395,400 371,900
Goodwill [Roll Forward]      
Goodwill, net, beginning balance 395,400 371,900  
Additions from new business combinations 0 23,500  
Measurement period adjustments (c) 1,800 0  
Currency translation adjustments 0 0  
Goodwill, net, ending balance 397,200 395,400  
Pipeline Infrastructure      
Goodwill [Line Items]      
Goodwill, gross 642,600   586,000
Accumulated impairment loss (115,300)   (119,300)
Goodwill, net 527,300 518,900 $ 466,700
Goodwill [Roll Forward]      
Goodwill, net, beginning balance 518,900 466,700  
Additions from new business combinations 1,400 53,400  
Measurement period adjustments (c) 3,800 0  
Currency translation adjustments 3,200 (1,200)  
Goodwill, net, ending balance $ 527,300 $ 518,900