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Revenue Recognition and Related Balance Sheet Accounts - Additional Information (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Sep. 30, 2023
USD ($)
customer
Sep. 30, 2022
USD ($)
customer
Sep. 30, 2023
USD ($)
customer
Sep. 30, 2022
USD ($)
customer
Disaggregation of Revenue [Line Items]            
Percent of total revenues recognized associated with revenue recognition method     58.30% 52.40% 58.30% 51.50%
Remaining performance obligation $ 13,560,000 $ 8,800,000 $ 13,560,000   $ 13,560,000  
Revenues recognized related to change orders and claims 799,500 549,300 $ 799,500   $ 799,500  
Change in contract estimates, favorable (unfavorable) impact on revenue, percent     0.70% 1.70% 0.30% 0.90%
Change in contract estimates, (favorable) unfavorable impact on operating results, percent       (10.20%)   (5.80%)
Change in contract estimates, (favorable) unfavorable impact on operating results, amount       $ (70,600)   $ (108,100)
Revenue recognized related to amounts in contract liabilities outstanding at the beginning of period         $ 991,300  
Write-offs charged against the allowance net of recoveries of amounts previously written off     $ (146) (33,030) (7,129) (32,777)
Current retainage balances 544,800 397,600 544,800   544,800  
Non-current retainage balances 173,400 136,200 173,400   173,400  
Unbilled receivables 957,900 823,900 957,900   957,900  
Unearned revenues, current portion $ 57,100 $ 59,600 $ 57,100   $ 57,100  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01            
Disaggregation of Revenue [Line Items]            
Percent of remaining performance obligation expected to be recognized   72.10%        
Recognition period for remaining performance obligation 12 months   12 months   12 months  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01            
Disaggregation of Revenue [Line Items]            
Percent of remaining performance obligation expected to be recognized 70.40%   70.40%   70.40%  
Recognition period for remaining performance obligation   12 months        
Canada Transmission Project            
Disaggregation of Revenue [Line Items]            
Change in contract estimates, (favorable) unfavorable impact on operating results, amount           $ 21,800
Projects In Progress            
Disaggregation of Revenue [Line Items]            
Change in contract estimates, (favorable) unfavorable impact on operating results, percent     5.00%   5.00%  
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    
Customer Concentration Risk            
Disaggregation of Revenue [Line Items]            
Number of customers representing ten percent or more of revenues | customer     0 0 0 0
Customer Concentration Risk | One Customer | Accounts Receivable | Renewable Energy            
Disaggregation of Revenue [Line Items]            
Concentration risk percentage (in percent) 14.00% 13.00%