Revenue Recognition and Related Balance Sheet Accounts - Additional Information (Details) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($) Customer	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($) Customer	Jun. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) Customer	Sep. 30, 2021 USD ($) Customer	Dec. 31, 2021 USD ($)
Disaggregation of Revenue [Line Items]
Percent of total revenues recognized associated with revenue recognition method	52.40%		42.50%		51.50%	43.40%
Remaining performance obligation	$ 6,830,000	$ 5,900,000			$ 6,830,000		$ 5,900,000
Revenues recognized related to change orders and claims	524,100	367,800			524,100		367,800
Change in contract estimates, favorable (unfavorable) impact on revenues	76,200		$ 53,200		119,700	$ 151,700
Change in contract estimates, (favorable) unfavorable impact on operating results, amount	$ 70,600		$ 41,900		$ 108,100	$ 127,400
Change in contract estimates, (favorable) unfavorable impact on operating results, percent	10.20%		7.80%		5.80%	9.40%
Revenue recognized related to amounts in contract liabilities outstanding at the beginning of period					$ 667,200
Write-offs charged against the allowance net of recoveries of amounts previously written off	$ (33,030)		$ (253)		(32,777)	$ (1,006)
Increase (decrease) in provision for credit losses	$ 2,343		$ 249		$ 2,048	$ 24,169
Ownership percentage of customer in joint venture	50.00%				50.00%
Current retainage balances	$ 339,900	406,700			$ 339,900		406,700
Non-current retainage balances	134,100	93,900			134,100		93,900
Unbilled receivables	977,200	679,000			977,200		679,000
Unearned revenues, current portion	57,400	51,800			$ 57,400		$ 51,800
Limetree Bay Refining, LLC
Disaggregation of Revenue [Line Items]
Write-offs charged against the allowance net of recoveries of amounts previously written off	$ (31,700)
Increase (decrease) in provision for credit losses		$ 8,100		$ 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					11.00%		11.00%
Customer Concentration Risk | Customer With Joint Venture Interest | Accounts Receivable
Disaggregation of Revenue [Line Items]
Concentration risk percentage							11.00%
Large Renewable Energy Transmission Project
Disaggregation of Revenue [Line Items]
Change in contract estimates, (favorable) unfavorable impact on operating results, amount					$ 21,800
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%					81.80%
Recognition period for remaining performance obligation		12 months					12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Disaggregation of Revenue [Line Items]
Percent of remaining performance obligation expected to be recognized	79.20%				79.20%
Recognition period for remaining performance obligation	12 months				12 months