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Business, Basis of Presentation and Significant Accounting Policies - Revenue Recognition (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Revenue [Line Items]          
Revenue recognition, changes In contract estimates, cost-to-cost method, financial effect, percentage (less than)     5.00% 5.00%  
Revenue recognition, performance obligations satisfied in previous periods, revenue recognized $ (3.8) $ 5.2 $ 10.7 $ 36.9  
Revenue recognition, remaining performance obligations, contract price allocated 5,300.0   5,300.0    
Contract with customer, unapproved change orders and/or claims, amount $ 141.0   $ 141.0   $ 104.0
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 52.00% 37.00% 54.00% 35.00%  
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 4.00% 4.00% 4.00% 4.00%  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01          
Revenue [Line Items]          
Revenue, remaining performance obligation, expected timing of satisfaction, period 3 months   3 months    
Revenue recognition, remaining performance obligations, contract price allocated $ 1,600.0   $ 1,600.0