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Business, Basis of Presentation and Significant Accounting Policies - Revenue Recognition (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Revenue [Line Items]      
Revenue recognition, performance obligations satisfied in previous periods, revenue recognized $ 9.6 $ 11.9  
Revenue recognition, remaining performance obligations, contract price allocated 8,400.0    
Contract with customer, unapproved change orders and/or claims, amount 285.0   $ 271.0
Operating Segments | Clean Energy and Infrastructure      
Revenue [Line Items]      
Revenue recognition, changes in contract estimates, result from margin decreases $ 8.5    
Maximum      
Revenue [Line Items]      
Revenue recognition, changes In contract estimates, cost-to-cost method, financial effect, percentage (less than) 5.00% 5.00%  
Change order or claim approval process, term within which expected to be completed 1 year    
Revenue Benchmark | Concentration Risk from Type of Arrangement | Master Service and Other Service Agreements      
Revenue [Line Items]      
Concentration risk, percentage of total 47.00% 58.00%  
Revenue Benchmark | Concentration Risk from Type of Arrangement | Master Service and Other Service Agreements | Point in Time      
Revenue [Line Items]      
Concentration risk, percentage of total 3.00% 4.00%  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01      
Revenue [Line Items]      
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01      
Revenue [Line Items]      
Revenue, remaining performance obligation, expected timing of satisfaction, period 9 months    
Revenue recognition, remaining performance obligations, contract price allocated $ 5,700.0