Segments and Related Information - Schedule of Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segments and Related Information [Line Items]
Revenue	$ 2,847,718	$ 2,686,849
Costs of revenue, excluding depreciation and amortization	2,536,618	2,379,672
EBITDA	207,700	196,300
Reportable Segments
Segments and Related Information [Line Items]
Revenue	2,847,700	2,686,800
Costs of revenue, excluding depreciation and amortization	2,536,000	2,372,600
Other segment items	104,000	118,000
EBITDA	207,700	196,300
Reportable Segments | Communications
Segments and Related Information [Line Items]
Revenue	680,900	505,700
Costs of revenue, excluding depreciation and amortization	615,900	459,500
Other segment items	18,200	20,600
EBITDA	46,800	25,600
Reportable Segments | Clean Energy and Infrastructure
Segments and Related Information [Line Items]
Revenue	915,800	753,500
Costs of revenue, excluding depreciation and amortization	807,500	689,900
Other segment items	51,200	43,200
EBITDA	57,100	20,400
Reportable Segments | Power Delivery
Segments and Related Information [Line Items]
Revenue	899,700	797,900
Costs of revenue, excluding depreciation and amortization	817,500	709,100
Other segment items	30,900	38,300
EBITDA	51,300	50,500
Reportable Segments | Pipeline Infrastructure
Segments and Related Information [Line Items]
Revenue	356,500	633,800
Costs of revenue, excluding depreciation and amortization	300,300	518,200
Other segment items	11,700	22,800
EBITDA	44,500	92,800
Reportable Segments | Other
Segments and Related Information [Line Items]
Revenue	0	0
Costs of revenue, excluding depreciation and amortization	0	0
Other segment items	(8,000)	(6,900)
EBITDA	8,000	6,900
Eliminations
Segments and Related Information [Line Items]
Revenue	(5,200)	(4,100)
Costs of revenue, excluding depreciation and amortization	(5,200)	(4,100)
Other segment items	0	0
EBITDA	$ 0	$ 0