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Revenue Recognition and Related Balance Sheet Accounts - Additional Information (Details) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($) project Customer	Jun. 30, 2021 USD ($) Customer	Mar. 31, 2021 USD ($)	Jun. 30, 2022 USD ($) project Customer	Jun. 30, 2021 USD ($) Customer	Dec. 31, 2021 USD ($)
Disaggregation of Revenue [Line Items]
Percent of total revenues recognized associated with revenue recognition method	51.70%	43.90%		51.50%	43.90%
Remaining performance obligation	$ 6,920,000			$ 6,920,000		$ 5,900,000
Revenues recognized related to change orders and claims	$ 497,100			$ 497,100		367,800
Number of transmission projects due to changes orders and claims | project	2			2
Change in contract estimates, favorable (unfavorable) impact on revenues	$ 62,100	$ 63,500		$ 80,800	$ 105,000
Change in contract estimates, (favorable) unfavorable impact on operating results, amount	$ (62,300)	$ (57,500)		$ (72,700)	$ (88,500)
Change in contract estimates, (favorable) unfavorable impact on operating results, percent	(10.00%)	(12.80%)		(6.20%)	(10.80%)
Revenue recognized related to amounts in contract liabilities outstanding at the beginning of period				$ 629,600
Increase (decrease) in provision for credit losses	$ (428)	$ 23,877		$ (295)	$ 23,920
Ownership percentage of customer in joint venture	50.00%			50.00%
Current retainage balances	$ 342,100			$ 342,100		406,700
Non-current retainage balances	128,400			128,400		93,900
Unbilled receivables	897,500			897,500		$ 679,000
Limetree Bay Refining, LLC
Disaggregation of Revenue [Line Items]
Accounts receivable, before allowance for credit loss	31,300			31,300
Limetree Bay Terminals, LLC
Disaggregation of Revenue [Line Items]
Accounts receivable, before allowance for credit loss	$ 400			$ 400
Limetree Bay Refining, LLC And Limetree Terminal, LLC
Disaggregation of Revenue [Line Items]
Increase (decrease) in provision for credit losses		$ 23,600
Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Number of customers representing ten percent or more of net receivable position | Customer	0	0		0	0
Customer Concentration Risk | One Customer | Accounts Receivable
Disaggregation of Revenue [Line Items]
Concentration risk percentage				12.00%		11.00%
Customer Concentration Risk | Customer With Joint Venture Interest | Accounts Receivable
Disaggregation of Revenue [Line Items]
Concentration risk percentage						11.00%
Accounts payable and accrued expenses
Disaggregation of Revenue [Line Items]
Unearned revenues, current portion	$ 48,200			$ 48,200		$ 51,800
Domestic Communications Project
Disaggregation of Revenue [Line Items]
Change in contract estimates, (favorable) unfavorable impact on operating results, amount			$ 14,800
Aggregate consideration for projects	$ 77,200			$ 77,200
Percentage of project completion	100.00%			100.00%
Large Renewable Energy Transmission Project
Disaggregation of Revenue [Line Items]
Change in contract estimates, (favorable) unfavorable impact on operating results, amount	$ 13,000			$ 23,700
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Disaggregation of Revenue [Line Items]
Percent of remaining performance obligation expected to be recognized						81.80%
Recognition period for remaining performance obligation						12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Disaggregation of Revenue [Line Items]
Percent of remaining performance obligation expected to be recognized	79.10%			79.10%
Recognition period for remaining performance obligation	12 months			12 months

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