Segments and Related Information - Schedule of Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Revenue:
Consolidated revenue	$ 1,954,400	$ 1,775,424
Consolidated EBITDA	78,700	198,400
Consolidated depreciation and amortization	110,800	$ 90,500
Consolidated segment assets	$ 7,087,996		$ 7,121,393
Communications | Customer Concentration Risk | Revenue | Utilities
Revenue:
Utilities customers, percentage of communications segment revenue	25.60%	20.10%
Reportable Segments | Communications
Revenue:
Consolidated revenue	$ 664,200	$ 568,600
Consolidated EBITDA	40,300	48,900
Consolidated depreciation and amortization	29,000	21,800
Consolidated segment assets	2,156,600		2,100,900
Reportable Segments | Communications | Revision of Prior Period, Adjustment
Revenue:
Consolidated segment assets	69,400
Reportable Segments | Clean Energy and Infrastructure
Revenue:
Consolidated revenue	435,900	350,400
Consolidated EBITDA	10,900	10,900
Consolidated depreciation and amortization	11,400	7,600
Consolidated segment assets	970,500		1,067,000
Reportable Segments | Oil and Gas
Revenue:
Consolidated revenue	211,000	725,500
Consolidated EBITDA	21,500	167,600
Consolidated depreciation and amortization	31,600	52,100
Consolidated segment assets	1,509,800		1,527,600
Reportable Segments | Oil and Gas | Revision of Prior Period, Adjustment
Revenue:
Consolidated segment assets	77,000
Reportable Segments | Power Delivery
Revenue:
Consolidated revenue	650,500	133,500
Consolidated EBITDA	46,100	3,600
Consolidated depreciation and amortization	35,700	6,100
Consolidated segment assets	2,038,600		2,017,200
Reportable Segments | Power Delivery | Revision of Prior Period, Adjustment
Revenue:
Consolidated segment assets	(192,200)
Reportable Segments | Other
Revenue:
Consolidated revenue	0	0
Consolidated EBITDA	6,900	7,400
Consolidated depreciation and amortization	0	0
Consolidated segment assets	263,000		238,100
Eliminations
Revenue:
Consolidated revenue	(7,200)	(2,600)
Corporate
Revenue:
Consolidated EBITDA	(47,000)	(40,000)
Consolidated depreciation and amortization	3,100	$ 2,900
Consolidated segment assets	149,500		$ 170,600
Corporate | Revision of Prior Period, Adjustment
Revenue:
Consolidated segment assets	$ 45,800