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Revenue - Infrastructure Segment Disaggregation of Revenue (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]    
Revenue $ 1,205.2 $ 716.9
Total revenue 1,205.2 716.9
Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue 1,159.5 675.9
Other revenue 0.2 0.7
Total revenue 1,159.7 676.6
Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue 539.8 217.7
Infrastructure | Industrial    
Disaggregation of Revenue [Line Items]    
Revenue 292.5 214.9
Infrastructure | Convention    
Disaggregation of Revenue [Line Items]    
Revenue 85.8 10.6
Infrastructure | Government    
Disaggregation of Revenue [Line Items]    
Revenue 68.0 65.0
Infrastructure | Healthcare    
Disaggregation of Revenue [Line Items]    
Revenue 59.8 29.5
Infrastructure | Transportation    
Disaggregation of Revenue [Line Items]    
Revenue 52.7 72.6
Infrastructure | Leisure    
Disaggregation of Revenue [Line Items]    
Revenue 23.2 42.8
Infrastructure | Other    
Disaggregation of Revenue [Line Items]    
Revenue $ 37.7 $ 22.8