Segments and Related Information - Schedule of Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment and Related Information [Line Items]
Revenue	$ 12,303,464	$ 11,995,934	$ 9,778,038
Costs of revenue, excluding depreciation and amortization	10,675,987	10,613,762	8,586,333
EBITDA	$ 1,194,100	$ 918,800	$ 828,100
Communications | Customer Concentration Risk | Revenue Benchmark | Utilities
Segment and Related Information [Line Items]
Concentration risk, percentage of total	24.00%	24.30%	23.60%
Reportable Segments
Segment and Related Information [Line Items]
Revenue	$ 12,303,500	$ 11,995,900	$ 9,778,000
Costs of revenue, excluding depreciation and amortization	10,655,700	10,591,800	8,591,000
Other segment items	453,700	485,300	358,900
EBITDA	1,194,100	918,800	828,100
Reportable Segments | Communications
Segment and Related Information [Line Items]
Revenue	3,460,000	3,259,500	3,233,700
Costs of revenue, excluding depreciation and amortization	3,033,400	2,872,600	2,810,700
Other segment items	92,900	117,700	95,900
EBITDA	333,700	269,200	327,100
Reportable Segments | Clean Energy and Infrastructure
Segment and Related Information [Line Items]
Revenue	4,092,100	3,962,000	2,618,600
Costs of revenue, excluding depreciation and amortization	3,639,800	3,616,900	2,388,800
Other segment items	195,300	212,700	127,000
EBITDA	257,000	132,400	102,800
Reportable Segments | Power Delivery
Segment and Related Information [Line Items]
Revenue	2,682,100	2,735,100	2,725,200
Costs of revenue, excluding depreciation and amortization	2,357,000	2,402,400	2,387,800
Other segment items	137,400	124,900	134,500
EBITDA	187,700	207,800	202,900
Reportable Segments | Pipeline Infrastructure
Segment and Related Information [Line Items]
Revenue	2,133,600	2,072,800	1,219,600
Costs of revenue, excluding depreciation and amortization	1,689,700	1,731,500	1,025,000
Other segment items	54,500	56,900	31,100
EBITDA	389,400	284,400	163,500
Reportable Segments | Other
Segment and Related Information [Line Items]
Revenue	0	0	0
Costs of revenue, excluding depreciation and amortization	0	1,100	(2,800)
Other segment items	(26,200)	(26,100)	(29,000)
EBITDA	26,200	25,000	31,800
Eliminations
Segment and Related Information [Line Items]
Revenue	(64,300)	(33,500)	(19,100)
Costs of revenue, excluding depreciation and amortization	(64,200)	(32,700)	(18,500)
Other segment items	(100)	(800)	(600)
EBITDA	$ 0	$ 0	$ 0